Space Review Worksheet
| # | Answer |
|---|---|
| 1 | The Sun. |
| 2 | An orbit. |
| 3 | Earth. |
| 4 | The Moon. |
| 5 | Eight planets. |
| 6 | Gravity. |
| 7 | Because we see different amounts of the Moon lit by the Sun as it orbits Earth. |
| 8 | A star makes its own light and heat, while a planet does not; it reflects light from a star. |
| 9 | Mercury, Venus, Earth, and Mars. |
| 10 | Jupiter, Saturn, Uranus, and Neptune. |
| 11 | Saturn. |
| 12 | A group of stars that appears to form a pattern in the sky. |
| 13 | Rotation is spinning on an axis, and revolution is moving around another object. |
| 14 | Because Earth rotates on its axis, so different parts of Earth face the Sun at different times. |
| 15 | A solar eclipse happens when the Moon moves between Earth and the Sun and blocks some or all of the Sun's light. |
| 16 | A lunar eclipse happens when Earth moves between the Sun and the Moon and casts a shadow on the Moon. |
| 17 | Because they are very large and are made mostly of gases or icy materials, not solid rock like the inner planets. |
| 18 | Earth is the right distance from the Sun to have temperatures that can allow liquid water and support life. |
| 19 | No. Stars can be different sizes, temperatures, and brightnesses. |
| 20 | The Moon changes phases because it orbits Earth. The Sun lights half of the Moon, and from Earth we see different lit parts of the Moon during its orbit. |