Section 7.2 Crossword

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Across
  1. 3. Most important and abundant greenhouse gas
  2. 4. Ratio of the solar radiation reflected by an object to the solar radiation that strikes it
  3. 7. Earth's closest point to the sun
  4. 10. Solar radiation that reaches the earth's surface
  5. 11. Measures the amount of energy that something gains, uses or loses in one second
  6. 12. Transfer of heat by moving currents of hot air
  7. 14. Most of the earth's _________________ occurs in the troposphere as a result of convection currents
  8. 16. Process of trapping heat in the earth's atmosphere
  9. 17. Horizontal movements of air
Down
  1. 1. Type of energy that comes from the sun
  2. 2. Process that occurs when the temperature of a gas rises as the gas is compressed with no heat lost
  3. 5. Gases that help trap heat in the earth's atmosphere
  4. 6. Transfer of heat by electromagnetic waves
  5. 8. Earth's farthest point from the sun
  6. 9. Vertical movements of air in an upward direction
  7. 13. Transfer of heat by direct contact between two objects
  8. 15. Amount of energy available to heat the earth's land, water and air