Across
- 1. The solid part of Earth, including rocks and soil
- 5. A small rocky body orbiting the Sun, mostly found in the asteroid belt.
- 8. The force that keeps planets in orbit around the Sun.
- 10. The hottest planet in our solar system.
- 12. The force exerted by air above Earth's surface
- 13. Layer of gases surrounding Earth
- 15. A ball of ice and dust that orbits the Sun, often described as sometimes having a tail.
- 17. All of Earth's water, including oceans, lakes, and rivers
- 18. A massive collection of stars, gas, and dust bound together by gravity.
Down
- 2. The hottest region (latitude) on earth
- 3. How compact the matter of an object is
- 4. A space rock that enters Earth's atmosphere and burns up.
- 6. The movement of air caused by heat
- 7. The part of Earth that includes all living organisms
- 9. A cloud of gas and dust in space, often the birthplace of stars.
- 11. The only planet that is known to support life as we know it.
- 14. This desert's dust travels across the ocean to the Amazon
- 16. The path of a planet around the Sun.