Across
- 4. Can support life.
- 5. The measure of how hot or cold something is.
- 7. Nearness to something.
- 10. The habitable zone, where a planet is the distance from a star where the temperature allows for water to remain a liquid.
- 12. The path that an object follows as it moves around another object.
- 13. Is NOT able to support life.
- 14. The amount of matter in an object.
- 16. The sunlight and energy that comes from the sun in form of light waves. Has different waves of radiation, some being more damaging to humans than others.
- 17. A zone of weak gravity (ex. orbiting in a spacecraft)
Down
- 1. The force exerted on an object by gravity.
- 2. The travel of humans through space through the use of space crafts.
- 3. Objects in space such as the sun, moon, planets, and stars.
- 6. Layers of gases surrounding a planet or other celestial body.
- 8. A planet that is made up of rock or metal. “Terra=Earth”
- 9. What something is made up of.
- 11. A force of attraction between. objects due to their masses.
- 15. The force exerted on a surface by the mass of the air above it.