Astronomy 2 Review. 1. Compare the length of time it takes the Moon to rotate with the amount of...

Astronomy 2Review

1. Compare the length of time it takes the Moon to rotate with the amount of time it takes the Moon to revolve once around the Earth.•Rotation = 27.3 days, Revolution = 27.3 days •They are the SAME!2. Why would you weigh less on the moon?•There is less gravity on the Moon.3. Identify when the Moon is closest to the Earth.•During Perigee

4. If the Moon does not produce it’s own light, then why does it light up the night sky?•It reflects light from the Sun.5. Compare and contrast craters with the maria found on the Moon.•Craters are created by meteorites and are empty. Maria were also created by meteorites but the space filled up with lava and cooled, creating the dark color of the maria.

6. What Moon Phase Is This?

And…How Do

You Know?

Waxing Crescent

Light on the right.Less than

half lit.

7. What Moon Phase Is This?

And…How Do

You Know?

First Quarter

Light on The right.

Exactly half lit.

8. Name this phase!

Full Moon

9. What phase of the moon will appear shortly after the phase pictured below?

a.Full moonb.New moonc.Waning gibbous moond.First quarter moon

D

10. Which statement BEST explains why the Moon has different phases during a lunar month?a.The Moon and the Sun appear to be the same size when seen from the Earth.b.The Moon rotates on its axis exactly one time during each revolution around the Earth.c.The Moon reflects different amounts of sunlight in its orbit around the Earth.d.The Moon casts a shadow on Earth when it moves directly between the Earth and Sun.

C

4

3

11.

X

Crevolution

12.

What phase of the moon would we see from Earth when the moon is at the following position?A. new moon B. waxing gibbousC. full moon D. waning crescent C

13.

What phase of the moon would we see from Earth when the moon is at the following position?

A. new moon B. waxing crescent

C. full moon D. waning crescent A

14.

2

15.

3

16.

1

17.

3

18.

3

19.

3

20.

29.5 days/ 1 month/lunar month

gravity

21.

29.5 days/ 1 month/lunar month

gravity

tides

22.

3

23.

3

24.

1

25.

4

26.

3

27.

2

28.

At which position would the moon be during a neap tide?

2

29.

How are the sun, Earth, and moon situated in space so that we experience a spring tide?

Sun, Earth, and the moon lined up with each other.

30.

31. Explain what causes the Earth to experience the different seasons?•Earth’s tilt•Earth’s revolution around the Sun32. Why does Earth experience Winter?•The Earth’s pole tilts away from the sun, and part of it receives indirect light (colder) and less daylight hours.33. Why does Earth experience summer?•The Earth’s pole tilts toward the sun, and part of it receives direct light (warmer) and more daylight hours.

34. What happens on Earth during the vernal equinox and autumnal equinox?•Every place on Earth receives 12 hours daylight and 12 hours dark.35. What happens to the number of daylight hours during the summer as you move from the equator to the North Pole?•The number of daylight hours increases.

WINTER SOLSTICESUMMER SOLSTICE

36. Label all seasons that occur in the Northern Hemisphere at each lovation in this diagram.37. Identify the date each of these seasons begin.

SPRING EQUINOX

FALL EQUINOX

DEC 21

SEPT 21

JUNE 21

MARCH 21

1

38.

a. State one reason that Earth has seasons.

b. If Earth is at position D, how much time would it take to return to position D?

c. Which season begins in the Northern Hemisphere when Earth is at position A?

• Earth’s tilt• Earth’s

revolution around the sun.

• 365.25 days

• Summer solstice

d. At what letter is the Earth at perihelion? • C

39.

2

40.

It decreases.

Winter Solstice

It’s pointed toward the sun.

41.

2

42.

Rotation

43.

2

44.

1

45.

When its Sunday in Sydney, Australia, what day is it in Anchorage, Alaka? Saturday – If you cross the

International Date Line going East you lose a day.

46.

When its 6pm in New York City, what time is it Mexico City?

6pm

47.

2

48.

49. What kind of eclipse is this?

Solar Eclipse

3

50.

51. Explain how a lunar eclipse differs from a solar eclipse?•During a lunar eclipse, the moon passes though Earth’s shadow because Earth is in between the Sun and the Moon.•During a solar eclipse, the Sun is blocked by the moon.52. Where must an observer be located in order to see a total solar eclipse as well as a total lunar eclipse?•In the umbra (dark part of the shadow).

1

53.

2

54.

55.

They are in different time zones.

56.

57.

They are in different time zones so Rawlins is behind Casper by one hour.

Identify the latitude and longitude for each point.

A = 20°N, 30°W

B = 0°, 10°W

C = 20°N, 25°E

D = 20°S, 0°

58.

30

45