Across
- 3. the point in a planet's orbit in which it is closest to the sun. Also when the planet travels fastest.
- 4. organisms use light energy to convert water and carbon dioxide into oxygen
- 5. A large cloud of dust and gas in space
- 8. deflected by Earth's magnetic field
- 12. burning something
- 14. N or S hemispheres experience their longest or shortest days due to the orientation of the tilt.
- 16. incoming solar radiation
- 18. the scientific study of the universe;
- 19. shortwave radiation emitted by the sun;
- 20. WAVING hi
- 22. after a new or full moon, big difference between high and low
- 23. Takes 24 hours for the Earth to complete a full blank.
- 24. The direct transfer of heat from one substance to another substance that it is touching.
Down
- 1. traces out a cone over a period of 26,000 years
- 2. gas Giants
- 6. The transfer of energy by electromagnetic waves
- 7. two or more bodies orbiting around each other
- 9. this process powers the sun.
- 10. It takes 365.25 days for the Earth to complete a full blank around the sun.
- 11. this process powers nuclear power plants and bombs.
- 13. after a first or third quarter moon, less difference than high and low
- 15. Process by which, in a fluid being heated, the warmer part of the mass will rise and the cooler portions will sink.
- 17. changing the Earth's tilt by 0.5 degrees every 18 years.
- 18. the point in a planet's orbit in which it is furthest from the sun. Also when the planet travels slowest.
- 21. day and night are equal lengths in both hemispheres