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Mystery DetectivesMystery DetectivesSpace
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Question 1 – Astronauts traveling to the moon must wear space suits having air tanks. Astronauts on the moon must breathe from air tanks because -
Question 1 – Astronauts traveling to the moon must wear space suits having air tanks. Astronauts on the moon must breathe from air tanks because -*F. there is too much oxygen on the surface of the moon.**F. there is too much oxygen on the surface of the moon.*
*G. the moon has little or no atmosphere.**G. the moon has little or no atmosphere.*
*H. the moon’s atmosphere is thicker than that on the Earth.*
*J. the moon’s atmosphere has more carbon dioxide than the Earth’s.*
Question 1 – Astronauts traveling to the moon must wear space suits having air tanks. Astronauts on the moon must breathe from air tanks because -
Question 1 – Astronauts traveling to the moon must wear space suits having air tanks. Astronauts on the moon must breathe from air tanks because -*F. there is too much oxygen on the surface of the moon.**F. there is too much oxygen on the surface of the moon.*
*G. the moon has little or no atmosphere.**G. the moon has little or no atmosphere.*
*H. the moon’s atmosphere is thicker than that on the Earth.*
*J. the moon’s atmosphere has more carbon dioxide than the Earth’s.*
Question 2 – Which of the following events is caused by the Earth rotating on its axis?
Question 2 – Which of the following events is caused by the Earth rotating on its axis?
*A. The four seasons **A. The four seasons *
*D. A day and night cycle **D. A day and night cycle *
*B. The passing of a year *
*C. The phases of the moon *
Question 2 – Which of the following events is caused by the Earth rotating on its axis?
Question 2 – Which of the following events is caused by the Earth rotating on its axis?
*A. The four seasons **A. The four seasons *
*D. A day and night cycle **D. A day and night cycle *
*B. The passing of a year *
*C. The phases of the moon *
Question 3 – Which of the following planets has the shortest orbit around the sun?
Question 3 – Which of the following planets has the shortest orbit around the sun?
*G. Mercury **G. Mercury *
*F. Earth **F. Earth *
*H. Neptune *
*J. Jupiter *
Question 3 – Which of the following planets has the shortest orbit around the sun?
Question 3 – Which of the following planets has the shortest orbit around the sun?
*G. Mercury **G. Mercury *
*F. Earth **F. Earth *
*H. Neptune *
*J. Jupiter *
Question 4 – The visible part of the sun’s surface is called the photosphere. The dark areas that appear on the photosphere are—
Question 4 – The visible part of the sun’s surface is called the photosphere. The dark areas that appear on the photosphere are—
*A. sunspots **A. sunspots *
*D. craters **D. craters *
*C. solar flares *
*B. coronas *
Question 4 – The visible part of the sun’s surface is called the photosphere. The dark areas that appear on the photosphere are—
Question 4 – The visible part of the sun’s surface is called the photosphere. The dark areas that appear on the photosphere are—
*A. sunspots **A. sunspots *
*D. craters **D. craters *
*C. solar flares *
*B. coronas *
Question 5 – A student noticed that the size of Galveston Beach changed each day. Why does this happen?
Question 5 – A student noticed that the size of Galveston Beach changed each day. Why does this happen?
*F. Bays have one high tide and one low tide every day.**F. Bays have one high tide and one low tide every day.*
*J. Bays have two high tides and two low tides every day.**J. Bays have two high tides and two low tides every day.*
*G. Bays have two high tides and two low tides every week.*
*H. Bays have three high tides and three low tides every day.*
Question 5 – A student noticed that the size of Galveston Beach changed each day. Why does this happen?
Question 5 – A student noticed that the size of Galveston Beach changed each day. Why does this happen?
*F. Bays have one high tide and one low tide every day.**F. Bays have one high tide and one low tide every day.*
*J. Bays have two high tides and two low tides every day.**J. Bays have two high tides and two low tides every day.*
*G. Bays have two high tides and two low tides every week.*
*H. Bays have three high tides and three low tides every day.*
Question 6 – Which of the following is the correct order of the planets, from innermost to outermost?
Question 6 – Which of the following is the correct order of the planets, from innermost to outermost?
*A. Mercury, Venus, Earth, Mars **A. Mercury, Venus, Earth, Mars *
*B. Jupiter, Earth, Mars, Saturn **B. Jupiter, Earth, Mars, Saturn *
*C. Pluto, Neptune, Uranus, Saturn *
*D. Mars, Earth, Venus, Mercury *
Question 6 – Which of the following is the correct order of the planets, from innermost to outermost?
Question 6 – Which of the following is the correct order of the planets, from innermost to outermost?
*A. Mercury, Venus, Earth, Mars **A. Mercury, Venus, Earth, Mars *
*B. Jupiter, Earth, Mars, Saturn **B. Jupiter, Earth, Mars, Saturn *
*C. Pluto, Neptune, Uranus, Saturn *
*D. Mars, Earth, Venus, Mercury *
Question 7 – Which sentence below explains why we see the phases of the moon?
Question 7 – Which sentence below explains why we see the phases of the moon?
*C. The moon revolves around the sun. *
*D. The moon is covered with many craters. *
*B. The moon is a very large planet. *
*A. The moon revolves around the Earth. **A. The moon revolves around the Earth. *
Question 7 – Which sentence below explains why we see the phases of the moon?
Question 7 – Which sentence below explains why we see the phases of the moon?
*C. The moon revolves around the sun. *
*D. The moon is covered with many craters. *
*B. The moon is a very large planet. *
*A. The moon revolves around the Earth. **A. The moon revolves around the Earth. *
Question 8 – About how many times does the Earth rotate on its axis each year?
Question 8 – About how many times does the Earth rotate on its axis each year?
*F. 365 **F. 365 *
*G. 28 **G. 28 *
*H. 24 *
*J. 1 *
Question 8 – About how many times does the Earth rotate on its axis each year?
Question 8 – About how many times does the Earth rotate on its axis each year?
*F. 365 **F. 365 *
*G. 28 **G. 28 *
*H. 24 *
*J. 1 *
Question 9 – What causes day and night on Earth?Question 9 – What causes day and night on Earth?
*D. the turning of Earth on its axis**D. the turning of Earth on its axis*
*A. the Earth’s orbit around the sun**A. the Earth’s orbit around the sun*
*B. the tilt of the Earth on its axis*
*C. the movement of the moon*
Question 9 – What causes day and night on Earth?Question 9 – What causes day and night on Earth?
*D. the turning of Earth on its axis**D. the turning of Earth on its axis*
*A. the Earth’s orbit around the sun**A. the Earth’s orbit around the sun*
*B. the tilt of the Earth on its axis*
*C. the movement of the moon*
Question 10 – In Houston, summer is warmer than winter because—Question 10 – In Houston, summer is warmer than winter because—
*F. the moon is higher in the sky in the summer. **F. the moon is higher in the sky in the summer. *
*H. the Northern Hemisphere is tilted towards the sun in the summer. *
*H. the Northern Hemisphere is tilted towards the sun in the summer. *
*G. the Earth is closer to the sun in the summer. *
*J. the sun shines brighter in the summer. *
Question 10 – In Houston, summer is warmer than winter because—Question 10 – In Houston, summer is warmer than winter because—
*F. the moon is higher in the sky in the summer. **F. the moon is higher in the sky in the summer. *
*H. the Northern Hemisphere is tilted towards the sun in the summer. *
*H. the Northern Hemisphere is tilted towards the sun in the summer. *
*G. the Earth is closer to the sun in the summer. *
*J. the sun shines brighter in the summer. *
Question 11 – Which of the following keeps the planets in orbit around the sun?
Question 11 – Which of the following keeps the planets in orbit around the sun?
*D. The force of gravity **D. The force of gravity *
*B. Electromagnetic energy **B. Electromagnetic energy *
*A. Their atmosphere *
*C. Thermal energy *
Question 11 – Which of the following keeps the planets in orbit around the sun?
Question 11 – Which of the following keeps the planets in orbit around the sun?
*D. The force of gravity **D. The force of gravity *
*B. Electromagnetic energy **B. Electromagnetic energy *
*A. Their atmosphere *
*C. Thermal energy *
Question 12 – Which of the following objects is found in the center of our Solar System?
Question 12 – Which of the following objects is found in the center of our Solar System?
*G. The sun**G. The sun*
*F. Jupiter**F. Jupiter*
*J. The moon*
*H. Earth*
Question 12 – Which of the following objects is found in the center of our Solar System?
Question 12 – Which of the following objects is found in the center of our Solar System?
*G. The sun**G. The sun*
*F. Jupiter**F. Jupiter*
*J. The moon*
*H. Earth*
Question 13 – It is possible to see large dark areas on the moon’s surface. These areas are MOST LIKELY—
Question 13 – It is possible to see large dark areas on the moon’s surface. These areas are MOST LIKELY—
*A. mountains**A. mountains*
*B. craters**B. craters*
*D. great lakes*
*C. active volcanoes*
Question 13 – It is possible to see large dark areas on the moon’s surface. These areas are MOST LIKELY—
Question 13 – It is possible to see large dark areas on the moon’s surface. These areas are MOST LIKELY—
*A. mountains**A. mountains*
*B. craters**B. craters*
*D. great lakes*
*C. active volcanoes*
Question 14 – What would happen if the Earth stopped rotating?Question 14 – What would happen if the Earth stopped rotating?
*G. The entire Earth would always be dark.**G. The entire Earth would always be dark.*
*F. Half of the Earth would always be dark.**F. Half of the Earth would always be dark.*
*H. The entire Earth would always be light.*
*J. The sun would revolve around the Earth.*
Question 14 – What would happen if the Earth stopped rotating?Question 14 – What would happen if the Earth stopped rotating?
*G. The entire Earth would always be dark.**G. The entire Earth would always be dark.*
*F. Half of the Earth would always be dark.**F. Half of the Earth would always be dark.*
*H. The entire Earth would always be light.*
*J. The sun would revolve around the Earth.*
Question 15 – What type of energy does the sun provide?Question 15 – What type of energy does the sun provide?
*H. Solar**H. Solar*
*J. Sound**J. Sound*
*G. Lunar*
*F. Electrical*
Question 15 – What type of energy does the sun provide?Question 15 – What type of energy does the sun provide?
*H. Solar**H. Solar*
*J. Sound**J. Sound*
*G. Lunar*
*F. Electrical*
Question 16 – To the people on Earth, the sun looks much larger than all the other stars. Why is this true?
Question 16 – To the people on Earth, the sun looks much larger than all the other stars. Why is this true?
*A. The sun is much bigger than the other stars.**A. The sun is much bigger than the other stars.*
*B. The sun is closer to the Earth than the other stars.**B. The sun is closer to the Earth than the other stars.*
*C. The sun looks big because the moon is so small.*
*D. The Earth revolves slowly around the sun.*
Question 16 – To the people on Earth, the sun looks much larger than all the other stars. Why is this true?
Question 16 – To the people on Earth, the sun looks much larger than all the other stars. Why is this true?
*A. The sun is much bigger than the other stars.**A. The sun is much bigger than the other stars.*
*B. The sun is closer to the Earth than the other stars.**B. The sun is closer to the Earth than the other stars.*
*C. The sun looks big because the moon is so small.*
*D. The Earth revolves slowly around the sun.*
Question 17 - An astronaut weighs less on the moon than on the Earth because the moon has less
.
Question 17 - An astronaut weighs less on the moon than on the Earth because the moon has less
.
*H. gravity**H. gravity*
*F. magnetism**F. magnetism*
*G. density*
*J. atmosphere*
Question 17 - An astronaut weighs less on the moon than on the Earth because the moon has less
.
Question 17 - An astronaut weighs less on the moon than on the Earth because the moon has less
.
*H. gravity**H. gravity*
*F. magnetism**F. magnetism*
*G. density*
*J. atmosphere*
Question 18 – What causes the ocean tides on the Earth?Question 18 – What causes the ocean tides on the Earth?
*B. The moon’s gravitational pull on the Earth**B. The moon’s gravitational pull on the Earth*
*A. The movement of the Earth around the sun**A. The movement of the Earth around the sun*
*C. The rotation of the moon around the Earth*
*D. The Earth’s reflection of sunlight to the moon*
Question 18 – What causes the ocean tides on the Earth?Question 18 – What causes the ocean tides on the Earth?
*B. The moon’s gravitational pull on the Earth**B. The moon’s gravitational pull on the Earth*
*A. The movement of the Earth around the sun**A. The movement of the Earth around the sun*
*C. The rotation of the moon around the Earth*
*D. The Earth’s reflection of sunlight to the moon*
Question 19 – Which of the following forces pulls a person jumping rope back to the Earth’s surface?
Question 19 – Which of the following forces pulls a person jumping rope back to the Earth’s surface?
*F. Pressure**F. Pressure*
*J. Gravity**J. Gravity*
*G. Inertia*
*H. Friction*
Question 19 – Which of the following forces pulls a person jumping rope back to the Earth’s surface?
Question 19 – Which of the following forces pulls a person jumping rope back to the Earth’s surface?
*F. Pressure**F. Pressure*
*J. Gravity**J. Gravity*
*G. Inertia*
*H. Friction*
Question 20 - How long does it take the Earth to rotate once on its axis?
Question 20 - How long does it take the Earth to rotate once on its axis?
*G. about 24 hours**G. about 24 hours*
*F. about 365 days**F. about 365 days*
*H. about 1 year*
*J. about 29 days*
Question 20 - How long does it take the Earth to rotate once on its axis?
Question 20 - How long does it take the Earth to rotate once on its axis?
*G. about 24 hours**G. about 24 hours*
*F. about 365 days**F. about 365 days*
*H. about 1 year*
*J. about 29 days*
Question 21 – Why is it possible for astronauts in space to see the Earth and the moon from great distances?
Question 21 – Why is it possible for astronauts in space to see the Earth and the moon from great distances?
*F. The Earth and the moon reflect the sun’s light.**F. The Earth and the moon reflect the sun’s light.*
*G. The sun shines in the windows of the space craft.**G. The sun shines in the windows of the space craft.*
*H. They view the Earth and moon through a telescope.*
*J. They look at the Earth and moon with binoculars.*
Question 21 – Why is it possible for astronauts in space to see the Earth and the moon from great distances?
Question 21 – Why is it possible for astronauts in space to see the Earth and the moon from great distances?
*F. The Earth and the moon reflect the sun’s light.**F. The Earth and the moon reflect the sun’s light.*
*G. The sun shines in the windows of the space craft.**G. The sun shines in the windows of the space craft.*
*H. They view the Earth and moon through a telescope.*
*J. They look at the Earth and moon with binoculars.*
Question 22 - What causes seasons on the Earth?Question 22 - What causes seasons on the Earth?
*C. the tilt of the Earth on its axis as it revolves around the sun**C. the tilt of the Earth on its axis as it revolves around the sun*
*A. the movement of the moon as it revolves around the sun**A. the movement of the moon as it revolves around the sun*
*B. the movement of the sun as the Earth revolves around it*
*D. the orbits of other planets as they revolve around the sun*
Question 22 - What causes seasons on the Earth?Question 22 - What causes seasons on the Earth?
*C. the tilt of the Earth on its axis as it revolves around the sun**C. the tilt of the Earth on its axis as it revolves around the sun*
*A. the movement of the moon as it revolves around the sun**A. the movement of the moon as it revolves around the sun*
*B. the movement of the sun as the Earth revolves around it*
*D. the orbits of other planets as they revolve around the sun*
Question 23 – In order from the sun, the fifth planet is —Question 23 – In order from the sun, the fifth planet is —
*D. Jupiter**D. Jupiter*
*A. Earth**A. Earth*
*B. Venus*
*C. Saturn*
Question 23 – In order from the sun, the fifth planet is —Question 23 – In order from the sun, the fifth planet is —
*D. Jupiter**D. Jupiter*
*A. Earth**A. Earth*
*B. Venus*
*C. Saturn*
Question 24 – What object follows the same orbit as Earth orbiting the sun?
Question 24 – What object follows the same orbit as Earth orbiting the sun?
*F. Mercury**F. Mercury*
*G. The moon**G. The moon*
*H. Jupiter*
*J. The sun*
Question 24 – What object follows the same orbit as Earth orbiting the sun?
Question 24 – What object follows the same orbit as Earth orbiting the sun?
*F. Mercury**F. Mercury*
*G. The moon**G. The moon*
*H. Jupiter*
*J. The sun*
Question 25 - When it is winter in the Southern Hemisphere, it is summer in the .
Question 25 - When it is winter in the Southern Hemisphere, it is summer in the .
*J. Northern Hemisphere**J. Northern Hemisphere*
*F. Western Hemisphere**F. Western Hemisphere*
*G. Southern Hemisphere*
*H. Eastern Hemisphere*
Question 25 - When it is winter in the Southern Hemisphere, it is summer in the .
Question 25 - When it is winter in the Southern Hemisphere, it is summer in the .
*J. Northern Hemisphere**J. Northern Hemisphere*
*F. Western Hemisphere**F. Western Hemisphere*
*G. Southern Hemisphere*
*H. Eastern Hemisphere*
Question 26 – The sun and the nine planets compose —Question 26 – The sun and the nine planets compose —
*G. a system**G. a system*
*F. a comet**F. a comet*
*H. a galaxy*
*J. an orbit*
Question 26 – The sun and the nine planets compose —Question 26 – The sun and the nine planets compose —
*G. a system**G. a system*
*F. a comet**F. a comet*
*H. a galaxy*
*J. an orbit*
Question 27 – Astronauts who travel to the moon must wear spacesuits containing air tanks. What would be the most important reason for doing this?
Question 27 – Astronauts who travel to the moon must wear spacesuits containing air tanks. What would be the most important reason for doing this?
*C. The spacesuits contain oxygen for the astronauts.**C. The spacesuits contain oxygen for the astronauts.*
*A. The suits protect the astronauts from the rays of the sun.**A. The suits protect the astronauts from the rays of the sun.*
*B. The suits protect the astronauts if they fall down.*
*D. The spacesuits keep the astronauts from getting too hot.*
Question 27 – Astronauts who travel to the moon must wear spacesuits containing air tanks. What would be the most important reason for doing this?
Question 27 – Astronauts who travel to the moon must wear spacesuits containing air tanks. What would be the most important reason for doing this?
*C. The spacesuits contain oxygen for the astronauts.**C. The spacesuits contain oxygen for the astronauts.*
*A. The suits protect the astronauts from the rays of the sun.**A. The suits protect the astronauts from the rays of the sun.*
*B. The suits protect the astronauts if they fall down.*
*D. The spacesuits keep the astronauts from getting too hot.*
Question 28 – The great majority of the Earth’s surface is covered by —
Question 28 – The great majority of the Earth’s surface is covered by —
*C. water**C. water*
*A. rocks**A. rocks*
*B. soil*
*D. sand*
Question 28 – The great majority of the Earth’s surface is covered by —
Question 28 – The great majority of the Earth’s surface is covered by —
*C. water**C. water*
*A. rocks**A. rocks*
*B. soil*
*D. sand*
Question 29 – Earth would not have seasons if—Question 29 – Earth would not have seasons if—
*C. it was not tilted on its axis **C. it was not tilted on its axis *
*A. it did not rotate on its axis **A. it did not rotate on its axis *
*D. it had more than one moon *
*B. it was closer to the sun *
Question 29 – Earth would not have seasons if—Question 29 – Earth would not have seasons if—
*C. it was not tilted on its axis **C. it was not tilted on its axis *
*A. it did not rotate on its axis **A. it did not rotate on its axis *
*D. it had more than one moon *
*B. it was closer to the sun *
Question 30 – What is one year on Earth?Question 30 – What is one year on Earth?
*H. The time it takes for Earth to make one complete revolution around the sun*
*H. The time it takes for Earth to make one complete revolution around the sun*
*F. The time it takes for Earth to make one complete rotation around the sun *
*F. The time it takes for Earth to make one complete rotation around the sun *
*G. The time it takes for Earth to make one complete revolution around the moon *
*J. The time it takes for Earth to make 365 revolutions around the sun*
Question 30 – What is one year on Earth?Question 30 – What is one year on Earth?
*H. The time it takes for Earth to make one complete revolution around the sun*
*H. The time it takes for Earth to make one complete revolution around the sun*
*F. The time it takes for Earth to make one complete rotation around the sun *
*F. The time it takes for Earth to make one complete rotation around the sun *
*G. The time it takes for Earth to make one complete revolution around the moon *
*J. The time it takes for Earth to make 365 revolutions around the sun*
Question 31 – What determines the length of a planet’s year?
Question 31 – What determines the length of a planet’s year?
*C. The time it takes to rotate on its axis **C. The time it takes to rotate on its axis *
*D. The time it takes to revolve around the sun **D. The time it takes to revolve around the sun *
*A. How large the planet is *
*B. The number of hours in its year *
Question 31 – What determines the length of a planet’s year?
Question 31 – What determines the length of a planet’s year?
*C. The time it takes to rotate on its axis **C. The time it takes to rotate on its axis *
*D. The time it takes to revolve around the sun **D. The time it takes to revolve around the sun *
*A. How large the planet is *
*B. The number of hours in its year *
Question 32 – Planets move in a curved path around the sun called —
Question 32 – Planets move in a curved path around the sun called —
*J. an orbit**J. an orbit*
*F. an ellipse**F. an ellipse*
*G. a track*
*H. a circle*
Question 32 – Planets move in a curved path around the sun called —
Question 32 – Planets move in a curved path around the sun called —
*J. an orbit**J. an orbit*
*F. an ellipse**F. an ellipse*
*G. a track*
*H. a circle*
Question 33 – All of the following are true statements about the sun EXCEPT—
Question 33 – All of the following are true statements about the sun EXCEPT—
*A. the sun is a solid mass of rock much like the Earth **A. the sun is a solid mass of rock much like the Earth *
*B. the sun is the source of almost all of the energy found on the Earth *
*B. the sun is the source of almost all of the energy found on the Earth *
*C. the sun is about 100 times the size of the Earth *
*D. the sun has many different layers *
Question 33 – All of the following are true statements about the sun EXCEPT—
Question 33 – All of the following are true statements about the sun EXCEPT—
*A. the sun is a solid mass of rock much like the Earth **A. the sun is a solid mass of rock much like the Earth *
*B. the sun is the source of almost all of the energy found on the Earth *
*B. the sun is the source of almost all of the energy found on the Earth *
*C. the sun is about 100 times the size of the Earth *
*D. the sun has many different layers *
Question 34 – In an accurate diagram of our Solar System, which of the following objects would be shown closest to the Earth?
Question 34 – In an accurate diagram of our Solar System, which of the following objects would be shown closest to the Earth?
*G. The sun **G. The sun *
*F. The moon **F. The moon *
*H. Venus *
*J. Mars *
Question 34 – In an accurate diagram of our Solar System, which of the following objects would be shown closest to the Earth?
Question 34 – In an accurate diagram of our Solar System, which of the following objects would be shown closest to the Earth?
*G. The sun **G. The sun *
*F. The moon **F. The moon *
*H. Venus *
*J. Mars *
Question 35 – What tool would be used to observe the moon in the night sky?
Question 35 – What tool would be used to observe the moon in the night sky?
*D.**D.*
*A.**A.*
*B.*
*C.*
Question 35 – What tool would be used to observe the moon in the night sky?
Question 35 – What tool would be used to observe the moon in the night sky?
*D.**D.*
*A.**A.*
*B.*
*C.*
Question 36 – The sun appears to rise in the east and set in the west every day. This happens because—
Question 36 – The sun appears to rise in the east and set in the west every day. This happens because—
*H. the earth rotates on its axis**H. the earth rotates on its axis*
*G. the Earth revolves around the sun **G. the Earth revolves around the sun *
*F. the sun revolves around the Earth *
*J. the sun rotates on its axis *
Question 36 – The sun appears to rise in the east and set in the west every day. This happens because—
Question 36 – The sun appears to rise in the east and set in the west every day. This happens because—
*H. the earth rotates on its axis**H. the earth rotates on its axis*
*G. the Earth revolves around the sun **G. the Earth revolves around the sun *
*F. the sun revolves around the Earth *
*J. the sun rotates on its axis *
Question 37 – The moon produces no light of its own, yet we see it shining brightly in the night sky. How is this possible?
Question 37 – The moon produces no light of its own, yet we see it shining brightly in the night sky. How is this possible?
*B. The Earth reflects light from the sun. **B. The Earth reflects light from the sun. *
*A. The moon reflects light from the sun.**A. The moon reflects light from the sun.*
*D. There are no clouds above the surface of the moon. *
*C. Heat on the moon’s surface glows in the night sky. *
Question 37 – The moon produces no light of its own, yet we see it shining brightly in the night sky. How is this possible?
Question 37 – The moon produces no light of its own, yet we see it shining brightly in the night sky. How is this possible?
*B. The Earth reflects light from the sun. **B. The Earth reflects light from the sun. *
*A. The moon reflects light from the sun.**A. The moon reflects light from the sun.*
*D. There are no clouds above the surface of the moon. *
*C. Heat on the moon’s surface glows in the night sky. *
Question 38 – What causes a full moon to look different than a first quarter moon?
Question 38 – What causes a full moon to look different than a first quarter moon?
*F. The amount of sunlight reflected by the moon’s surface**F. The amount of sunlight reflected by the moon’s surface*
*G. The amount of sunlight reflected by the Earth’s surface**G. The amount of sunlight reflected by the Earth’s surface*
*H. The amount of sunlight reflected by the other planets*
*J. The amount of sunlight reflected by the asteroid belt*
Question 38 – What causes a full moon to look different than a first quarter moon?
Question 38 – What causes a full moon to look different than a first quarter moon?
*F. The amount of sunlight reflected by the moon’s surface**F. The amount of sunlight reflected by the moon’s surface*
*G. The amount of sunlight reflected by the Earth’s surface**G. The amount of sunlight reflected by the Earth’s surface*
*H. The amount of sunlight reflected by the other planets*
*J. The amount of sunlight reflected by the asteroid belt*
Question 39 – What might happen to the solar system if there were no gravity?
Question 39 – What might happen to the solar system if there were no gravity?
*A. The planets would drift off to space in a straight line.**A. The planets would drift off to space in a straight line.*
*B. The planets would freeze and not move any more.**B. The planets would freeze and not move any more.*
*C. The planets would remain in orbit around the sun.*
*D. The planets would move in exactly the same way.*
Question 39 – What might happen to the solar system if there were no gravity?
Question 39 – What might happen to the solar system if there were no gravity?
*A. The planets would drift off to space in a straight line.**A. The planets would drift off to space in a straight line.*
*B. The planets would freeze and not move any more.**B. The planets would freeze and not move any more.*
*C. The planets would remain in orbit around the sun.*
*D. The planets would move in exactly the same way.*
Question 40 – The sun is composed of—Question 40 – The sun is composed of—
*A. cold rock**A. cold rock*
*G. hot gases**G. hot gases*
*H. frozen water*
*J. nuclear reactions*
Question 40 – The sun is composed of—Question 40 – The sun is composed of—
*A. cold rock**A. cold rock*
*G. hot gases**G. hot gases*
*H. frozen water*
*J. nuclear reactions*
Question 41 – To which of the following planets is Earth the closest?
Question 41 – To which of the following planets is Earth the closest?
*F. Mars**F. Mars*
*G. Mercury**G. Mercury*
*H. Jupiter*
*J. Saturn*
Question 41 – To which of the following planets is Earth the closest?
Question 41 – To which of the following planets is Earth the closest?
*F. Mars**F. Mars*
*G. Mercury**G. Mercury*
*H. Jupiter*
*J. Saturn*
Question 42 – The sun and a full moon appear to be about the same size from the Earth. Which answer below BEST describes the reason for this observation?
Question 42 – The sun and a full moon appear to be about the same size from the Earth. Which answer below BEST describes the reason for this observation?
*F. The moon and the sun are the same size. **F. The moon and the sun are the same size. *
*J. The sun is farther away from the Earth than the moon.**J. The sun is farther away from the Earth than the moon.*
*H. As the Earth revolves, it gets closer to the sun. *
*G. As the moon orbits the Earth, it gets closer than the sun. *
Question 42 – The sun and a full moon appear to be about the same size from the Earth. Which answer below BEST describes the reason for this observation?
Question 42 – The sun and a full moon appear to be about the same size from the Earth. Which answer below BEST describes the reason for this observation?
*F. The moon and the sun are the same size. **F. The moon and the sun are the same size. *
*J. The sun is farther away from the Earth than the moon.**J. The sun is farther away from the Earth than the moon.*
*H. As the Earth revolves, it gets closer to the sun. *
*G. As the moon orbits the Earth, it gets closer than the sun. *
Question 43 – Which of the following is found on the Earth, but NOT on the moon?
Question 43 – Which of the following is found on the Earth, but NOT on the moon?
*A. Active volcanoes**A. Active volcanoes*
*B. Mountains**B. Mountains*
*D. Craters*
*C. Valleys and canyons*
Question 43 – Which of the following is found on the Earth, but NOT on the moon?
Question 43 – Which of the following is found on the Earth, but NOT on the moon?
*A. Active volcanoes**A. Active volcanoes*
*B. Mountains**B. Mountains*
*D. Craters*
*C. Valleys and canyons*
Question 44 – The size of a planet’s orbit is determined by
.
Question 44 – The size of a planet’s orbit is determined by
.
*F. how big or small the planet is**F. how big or small the planet is*
*H. the distance of the planet from the sun**H. the distance of the planet from the sun*
*G. how hot or cold the planet is*
*J. the distance between the planet and its moon*
Question 44 – The size of a planet’s orbit is determined by
.
Question 44 – The size of a planet’s orbit is determined by
.
*F. how big or small the planet is**F. how big or small the planet is*
*H. the distance of the planet from the sun**H. the distance of the planet from the sun*
*G. how hot or cold the planet is*
*J. the distance between the planet and its moon*
Question 45 – The moon is kept in orbit around the Earth mainly by the force of—
Question 45 – The moon is kept in orbit around the Earth mainly by the force of—
*B. gravity**B. gravity*
*A. friction**A. friction*
*C. rotation*
*D. revolution*
Question 45 – The moon is kept in orbit around the Earth mainly by the force of—
Question 45 – The moon is kept in orbit around the Earth mainly by the force of—
*B. gravity**B. gravity*
*A. friction**A. friction*
*C. rotation*
*D. revolution*
Question 46 - Like the Earth, scientists believe the moon’s inner core is made mostly of
.
Question 46 - Like the Earth, scientists believe the moon’s inner core is made mostly of
.
*B. iron**B. iron*
*A. nickel**A. nickel*
*D. hydrogen*
*C. nitrogen*
Question 46 - Like the Earth, scientists believe the moon’s inner core is made mostly of
.
Question 46 - Like the Earth, scientists believe the moon’s inner core is made mostly of
.
*B. iron**B. iron*
*A. nickel**A. nickel*
*D. hydrogen*
*C. nitrogen*
Question 47 – Although the planets in our solar system are different, they all have some characteristics in common. Which of the following characteristics is most similar among the planets?
Question 47 – Although the planets in our solar system are different, they all have some characteristics in common. Which of the following characteristics is most similar among the planets?
*G. The shape of their orbit**G. The shape of their orbit*
*F. Their mass**F. Their mass*
*J. The number of moons they have*
*H. What matter they are made of*
Question 47 – Although the planets in our solar system are different, they all have some characteristics in common. Which of the following characteristics is most similar among the planets?
Question 47 – Although the planets in our solar system are different, they all have some characteristics in common. Which of the following characteristics is most similar among the planets?
*G. The shape of their orbit**G. The shape of their orbit*
*F. Their mass**F. Their mass*
*J. The number of moons they have*
*H. What matter they are made of*
Question 48 – Sunspots on the sun appear as dark spots because they are —
Question 48 – Sunspots on the sun appear as dark spots because they are —
*H. cooler than the rest of the sun’s surface**H. cooler than the rest of the sun’s surface*
*F. hotter than the rest of the sun’s surface**F. hotter than the rest of the sun’s surface*
*G. melted substances on the sun’s surface*
*J. icy spots on the surface of the sun*
Question 48 – Sunspots on the sun appear as dark spots because they are —
Question 48 – Sunspots on the sun appear as dark spots because they are —
*H. cooler than the rest of the sun’s surface**H. cooler than the rest of the sun’s surface*
*F. hotter than the rest of the sun’s surface**F. hotter than the rest of the sun’s surface*
*G. melted substances on the sun’s surface*
*J. icy spots on the surface of the sun*
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