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Across 5. form of oxygen gas, absorbs ultraviolet rays form the sun and then releases some of this energy in the form of heat 6. layer of the atmosphere between mesosphere and exosphere 9. The phenomenon whereby the earth's atmosphere traps solar radiation, caused by the presence in the atmosphere of gases such as carbon dioxide, water vapor, and methane. (2 Words) 10. transfer of energy through matter or space 11. layer of the atmosphere that is above the troposphere 12. ozone that is in the stratosphere, that protects life on Earth by absorbing much of the sun's harmful UV radiation. (2 Words)

Down 1. mixture of gases that surrounds earth 2. type of electromagnetic radiation that has wavelengths longer than visible light. (2 Words) 3. top layer of the atmosphere 4. transfer of heat by direct contact 7. lowest layer of the atmosphere 8. layer of the atmosphere between the stratosphere and thermosphere