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35 Cards in this Set
- Front
- Back
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The planets in the solar system revolve around_____________ |
the Sun |
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The Sun's immense __________________ hold the planets in their orbits. |
gravity |
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The planets orbital pattern is called |
elliptical |
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Planets that are closer to the Sun revolve ______________ than those that are farther away. |
faster |
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The solar system contains __________planets |
eight |
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The closest planet to the Sun |
Mercury |
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The second planet from the Sun |
Venus |
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The third planet from the Sun |
Earth |
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The fourth planet from the sun |
Mars |
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The fifth planet from the Sun |
Jupiter |
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The sixth planet from the sun |
Saturn |
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The seventh planet from the Sun |
Uranus |
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The eighth planet from the sun |
Neptune |
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Composed of dust, rock particles mixed with frozen water, methane and ammonia. |
Comet |
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The small pieces of dust and rock that break up from a comet's nucleus after passing close to the Sun many times |
Meteoroids |
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A meteoroid that burns up in the Earth's atmosphere |
Meteor |
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A piece of Meteoroid that does not completely burn up in the atmosphere and strikes earth |
Meteorite |
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A piece of rock similar to the material that formed into planets. |
Asteroids |
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Where are most Asteroids found? |
An area between the orbits of Mars and Jupiter |
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Proposed as a source of comets in the solar system |
Oort Cloud
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Meteor showers occur when |
Earth crosses the orbital path of a comet |
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second smallest planet |
Mercury |
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similar to earth in size and mass |
Venus |
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It's atmosphere protects life |
Earth |
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Surface appears reddish-yellow because of iron oxide in the soil |
Mars |
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Largest planet, the great red spot on the plant is a huge storm |
Jupiter |
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Second largest planet, has a large ring system |
Saturn |
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Large, gaseous planet with thin dark rings, it has a bluish green color because i=of the methane in it;s atmosephere |
Uranus |
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Large gaseous planet with rings that vary in thickness |
Neptune |
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Surface has many craters and high cliffs, no atmosphere, no moons. Extremely hot during the day and extremely cold at night. |
Mercury |
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Thick atmosphere made mostly of carbon dioxide |
Venus |
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Surface temperatures allow water to exist as a solid, liquid and a gas. It is the only planet where life is known to exist |
Earth |
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Ice caps are made of carbon dioxide and water, channels indicate that water had flowed on the surface, has large volcanos and valleys |
Mars |
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Has a this atmosphere made up of carbon dioxide. Huge dust storms often blanket the planet and it has 2 small moons. |
Mars |
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Dwarf planets |
Pluto, Eris and Ceres |
