| A | B |
|---|
| planet | a large body that orbits a star |
| meteorite | A meteoroid that strikes Earth's surface is a _______________________ |
| solar system | A star and all the planets, moons, and other bodies that orbit it make up a ______________ |
| gravity | The force of attraction among all objects |
| mass | The greater the ______________ of each object, the greater the attraction between them |
| smaller | The greater the distance is between a planet and the Sun, the ______________ the pull of gravity |
| inertia | the tendency of a moving object to stay in motion |
| orbit | the curved pathway in which the planets move around the Sun |
| inner | The _____________planets are rocket and all similar in size. Mercury, Venus, Earth, and Mars are included in this group of planets |
| asteroids | Rocky or metallic objects that orbit the Sun |
| Earth | The largest of the inner planets |
| few | Inner planets have ___________ if any moons and no rings |
| outer planets | Beyond the asteroid belt is another group of planets that includes Jupiter, Saturn, Uranus, and Neptune. This group is called the _________ |
| gas giants | Another term for the outer planets is |
| moons | The outer planets all have rings and many ___________ |
| comet | A __________ is a ball of ice and rock that orbits the Sun |
| meteoroids | _________ are small , rocky or metallic objects that oribt the Sun in both the inner and outer regions of the solar system |
| meteor | A _______________ is a meteoroid that enters Earth's atmosphere |
| moon | an object that orbits a planet |
