| A | B |
|---|
| Imaginary line on which the Earth orbits | axis |
| Saturn's rings were formed from | broken apart moons |
| Earth's tilted axis causes | uneven heating of the Earth's surface |
| It took Galileo 6 years to reach Jupiter because | Jupiter is so far |
| Earth is | a satellite of the sun |
| Jupiter's Great Red Spot is | a giant storm |
| The phase of the moon that cannot be seen is | a new moon. |
| The phases of the moon are | parts of the moon that are lighted |
| A solar eclipse is caused by | something blocking the sun's light |
| Planets | reflect the sun's light |
| The inner planets are made mostly of | rocks |
| The outer planets are made mostly of | gases |
