Across
- 4. Energy we get from deep underground. It can be used to generate electricity.
- 5. It takes 1 _______ for the earth to orbit the sun
- 6. The universe is _____________ (getting bigger)
- 7. The scientific word for movement energy
- 10. Wind and solar energy are _________ resources
- 11. Energy that we get from falling water
- 13. Galaxies at the edge of the universe are moving __________ than those in the middle
- 14. An alternative theory about where the universe came from (not the big bag)
- 15. The force that holds us in orbit around the sun
- 16. The name of our galaxy
- 17. Survival of the ___________ (only the best adapted organisms live)
- 19. The idea that organisms have changed over time and new species have been developed.
Down
- 1. Greenhouse gas that is causing global warming
- 2. A vacuum in space, that can even suck in light
- 3. The scientist the suggested the theory of evolution
- 8. An energy resource that will run out is call ___-___________
- 9. Lichen are sensitive to this gas
- 12. Evidence for the big bang (light from distance galaxies is stretched)
- 18. An adaptation of a polar bear is that is has ________ fur to keep warm
- 20. A fossil fuel
- 21. The star at the centre of our solar system