Across
- 2. The unit that weight is measured in
- 8. The force that brings everything down on Earth
- 9. Gas that makes up Venus's atmosphere
- 10. A name given to a ball of burning gas
- 11. Name given to whole of detected space
- 12. The word used to describe how much matter makes up an object(it never changes no matter what planet you are on and measured in kg)
Down
- 1. Category given to pluto
- 3. The unit that mass is measured in
- 4. The biggest gas planet in our solar system
- 5. The force that is exerted on a planet (measured in N)
- 6. Fourth planet from the sun
- 7. The hottest planet in our solar system
- 8. The process that traps heat in the atmosphere