| Term | Definition |
|---|
| elliptical | Johannes Kepler discovered that the orbits of planets are ______. |
| venus | a planet that is very hot and has sulfuric acidin its clouds is ______. |
| uranus | ______'s axis of rotation is nearly parallel to its plane of orbit. |
| venus and earth | two planets w/ similar mass and size are ______. |
| earth | the planet that average 150 average km, or 1 AU from the Sun is ______. |
| ganymede | ______ is the largest moon in the solar system. |
| mercury | the smallest planet and the one closet to the sun is ______. |
| meteroids | ______ are small pieces of rock moving through space. |
| mercury and mars | two inner planets that start w/ the same letter are ______ & ______. |
| meteors | when small pieces of rock flying through space enter earth's atmosphere and completely burn up, they are called ______. |
| meteorites | piecesof rock that aactually hit the surface of the earth are called ______. |
| mars and jupiter | most asteroids arelocated in an area between the orbits of ______ & ______. |
| jupiter's gravity kept it from forming | scientist theorize that the asteroid bely didnt form a planet b/c ______. |
| b/c it has the strongest amount of gravity in the whole solar system(the sun is about 99% of all the mass in the solar system) | why do planets orbit the sun? |
| the inner planets are small, solid planets made from rock and ice & the outer planets are big, gaseous planets made mostly from methane, ammonia, hydrogen and helium. | what is the differnece in the formation of the inner and outer planets? |
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