Across
- 1. Large marsupial
- 3. Distance divided by time.
- 4. Objects moving at 17,000 miles per hour do this around the earth.
- 7. Planet number 8
- 9. Any change in position.
- 10. The distance light would travel in one year.
- 13. Planet number 4
- 14. Planet number 7
- 16. The speed at which the earth rotates.
- 18. First planet from the sun in our solar system.
- 19. Planet number 2
- 20. Moves at about 186,000 miles per second.
Down
- 2. The rate of change in speed.
- 3. Planet number 6
- 5. Planet number 5
- 6. Planet number 9
- 8. Between Mars and Jupiter
- 9. The quantity of motion of a moving object.
- 11. Planet number 3
- 12. Speed and direction
- 15. This wave travels at about 700 miles per hour.
- 17. A force of attraction, makes things fall or stay in place.
