Across
- 5. The movement of the Earth around the Sun. One ________ equals one year.
- 6. Giant planets made mostly of hydrogen and helium.
- 7. An invisible line that a planet spins around.
- 10. Earth-like planets that are made of rock.
- 11. A planet spinning on its own axis. One ________ equals one day.
Down
- 1. Also known as planets!
- 2. After the new moon and before the full moon; More is illuminated each night.
- 3. This uses shadows to tell the time.
- 4. Groups of stars that form a shape in the night sky.
- 8. After the full moon and before the new moon; Less is illuminated each night.
- 9. Another term for revolution.
