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All There is to know About Our Planets Science Unit

EarthMarsJupiterSaturnUranusVenusPlutoNeptuneMercuryWe Have 9 planets:

What We Will Find Out About Each Planet:What is the Environment of the Planet.What is the climate of the PlanetWhat type of Orbit the planet has speed/rotation type.How far the planet is from the sun and how large/small the planet is.Any special or unusual facts about the planet.

Earth is the third planet from the sun.Earth is the fifth largest planetEarth surface: only planet with water on surface, and 71% covered with water. Also composed of mountains, plains, swamps and deserts.Orbital speed: 29.8 km/secClimate: average climate is 13 deg. C (55.4 deg F). Because of greenhouse effect earths temperature is raised 35 deg. C (95 deg. F). Without greenhouse effect earth would be a much colder planet, like Mars.There is life on earth because there is the necessary gases for life such as oxygen, hydrogen and a balance of carbon dioxide. Earth also has a suitable climate for life.

Earth

Earths time is gradually slowing down. Every few yrs. a second is added to make up for lost time, so that millions of yrs. From now a day will be 27 hrs. long.Earth has existed for 150-200 million yrs. And life on Earth has only existed 5-10% of earths lifetime.There is life on earth because there is the necessary gases for life such as oxygen, hydrogen and a balance of carbon dioxide. Earth also has a suitable climate for life.Special facts About EarthMars

Mars is known as the Red Planet because of its deep red color.Orbit: ElipticalAtmosphere: Very thin, much like earth , only more carbon dioxide and no greenhouse effect which makes it one of the coldest planets, unlike earth.Climate: Much like earth only seasons last 2X as long in martian yrs.In winter:Mars has polar ice caps that will condense at night and evaporate into water vapor in the day.

Special Facts About Mars

There is evidence of many traces of dried up water areas on Mars, such as dried up springs, gullies, lakes and even photographic evidence of possible present bodies of water. Because of Mars possibility of liquid water evidence and its Atmosphere and climate simi-larities to earth scientists hypothesize possible past life habitation and a favorable planet for human habitation.

Saturn

Second largest planet in the solar system and 6th planet from the sun. Orbital Speed: 9.7 km/sec. One day is 10hrs. 14mins and 1 yr is 29.5 earth days. Environment: Saturn is the only planet that is less dense than water. Saturn is composed mostly of gases, mainly hydrogen and small amt. of helium and methane.

Saturn ContinuedClimate: Wind blows at high speeds on Saturn with velocity of 500m per sec. (1,100 mph).Special Facts Saturn was first discovered to have 18 moons, but 4 more were found in 2000 and 9 more this yr. yielding a total of 31 moons. Saturns rings are hypothesized to be particles of an old moon that had a collision and smashed apart to pieces 50 mill. Yrs. Ago. Saturns rings orbit in different tilts.

Jupiter

Special Facts About Jupiter

There is a high pressure region of clouds moving counter clockwise known as the Great Red Spot and it stretches 12,000 by 25,000km in length and is possibly made of Red phosphorus.

The Rapid rotation of clouds on Jupiter causes belts and zones that encircle the planet parallel to the equator.

One of Jupiters largest moons Europa is 3138km in diameter , and it is covered in ice on its surface. Scientists say that under the ice layer there may be liquid water, which may support life.

Venus

Special Facts About Venus

Pluto Pluto is the smallest planet. It is only 2300km wide in diameter and has the smallest mass w/ .0022 g/kg in density. Orbit: Revolves on its axis, like Uranus, and at a 122.5 deg. Tilt. One side of Pluto gets extreme periods of darkness. Distance from Sun: Farthest planet from sun (3.67 bill. miles away), orbits with Neptune around sun and it takes 6.39 days for a full rotation and 247.8 yrs. To revolve around the sun.Planet Matching GameWhich planet is the hottest?Which planet has the fastest rotation?Which planet do we know the least about?Which planet is the 2nd largest planet ?PlutoSaturnJupiterVenus

15Pluto Continued

Environment: No space probes have succeeded to land on Pluto, so not much is known about the planet (estimated to happen 2015). It is observed to be a planet covered in ice like its moon Charon. Climate: . Avg. temp. believed to be (-378/-396d.F) Believed to be composed of primarily nitrogen (98%) and small amts. Of methane and (C02). Special Facts: Many astronomers believe Pluto is not a planet but either a star one of the 44 dwarf planets which are planets scientists know of but have not named or studied. (More Facts will be discussed)

This Presentation is brought to You By:Miriam Ben-Yair

Credits

http://library.thinkquest.orghttp://mars.sgi.Gom/Worlds/CyberMarz/Jupiter/HTML/index.htmlhttp://wikianswers.comhttp ://www.nineplanets.org/jupiter.html http://news.nationalgeographic.com www.mars.com www.mars.jpl.nasa.gov www.nasa.gov/worldbook/mars_worldbook.html en.wikipedia.org www.marsrovers.nasa.gov/-74k-