Across
- 2. produced from livestock
- 3. these gases trap heat in the atmosphere and make earth warmer
- 5. A planet that has water
- 7. instrument that mesures atmospheric pressure
- 14. the ozone layer is located at this layer
- 15. produced during photosynthesis
- 16. is the second most common element in the universe
- 17. the layer in which most meteors burn up
- 19. d = m/v
- 21. instrument to determine the altitude
- 23. increase of greenhouse gases which leads to increase temperature
- 24. insrument for measuring the density of liquids
- 25. the most common element in the universe
Down
- 1. instrument for measuring temperature
- 4. produced during the burning of fossil fuels
- 6. the highest layer in earth atmosphere
- 8. lowest part of the atmosphere
- 9. a layer in the atmosphere that blocks harmfull radiation from the sun to the earth
- 10. rays that comes from the sun and can cause skin to burn which leads to skin cancer
- 11. the hieght of a certain object to the surface like a plane
- 12. is the measure of how hot or cold something is
- 13. the air that surrounds the earth
- 18. makes up 78% of the air we breath
- 20. the star at the center of our solar system
- 22. water in its gas state