B1 2020 Nasrallah

12345678910111213141516171819202122232425
Across
  1. 2. produced from livestock
  2. 3. these gases trap heat in the atmosphere and make earth warmer
  3. 5. A planet that has water
  4. 7. instrument that mesures atmospheric pressure
  5. 14. the ozone layer is located at this layer
  6. 15. produced during photosynthesis
  7. 16. is the second most common element in the universe
  8. 17. the layer in which most meteors burn up
  9. 19. d = m/v
  10. 21. instrument to determine the altitude
  11. 23. increase of greenhouse gases which leads to increase temperature
  12. 24. insrument for measuring the density of liquids
  13. 25. the most common element in the universe
Down
  1. 1. instrument for measuring temperature
  2. 4. produced during the burning of fossil fuels
  3. 6. the highest layer in earth atmosphere
  4. 8. lowest part of the atmosphere
  5. 9. a layer in the atmosphere that blocks harmfull radiation from the sun to the earth
  6. 10. rays that comes from the sun and can cause skin to burn which leads to skin cancer
  7. 11. the hieght of a certain object to the surface like a plane
  8. 12. is the measure of how hot or cold something is
  9. 13. the air that surrounds the earth
  10. 18. makes up 78% of the air we breath
  11. 20. the star at the center of our solar system
  12. 22. water in its gas state