Science 6B Lesson 7: Earth's Atmosphere- Set A

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Across
  1. 5. contamination of air by harmful substances including gases and smoke
  2. 6. outermost layer of Earth’s atmosphere above the thermosphere
  3. 7. measure of the pollutants in air
  4. 12. total range of electromagnetic waves
  5. 14. distance above sea level
Down
  1. 1. gas such as carbon dioxide that absorbs energy in the atmosphere and keeps Earth warm
  2. 2. a thin layer of gases surrounding Earth
  3. 3. warming of Earth by gases in the atmosphere that absorb energy
  4. 4. winds in the Northern Hemisphere appear to curve to the right as they move and in the southern hemisphere, winds appear to curve to the left
  5. 8. the transfer of heat by a current in a liquid or gas
  6. 9. rain with a pH of less than 5 that forms when nitrogen and sulfur oxides in the air dissolve in rainwater
  7. 10. fast-moving air current high in the troposphere
  8. 11. wind that occurs in a belt that circles the planet
  9. 13. heat is transferred between objects by direct contact