The Ozone

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Across
  1. 3. radiation the ozone protects us from
  2. 5. With the Montreal Protocol, up to 2 million cases of this may be prevented globally each year by 2030.
  3. 9. Causes the ozone layer to break down and is mostly found in refrigerants, aerosols, and other plastic products.
  4. 12. 1974
  5. 15. detecting ozone at large distances from the instrument.
  6. 16. a global agreement in 1987 to protect the Earth’s ozone layer by phasing out the chemicals that deplete it.
  7. 17. What has caused the ozone layer to thin
  8. 18. The smallest part of an element that can exist alone or in combination with others like it.
  9. 19. Layer of the atmosphere where the ozone is located
Down
  1. 1. Ozone protection efforts have contributed significantly to slowing it.
  2. 2. requires air to be drawn directly into an instrument.
  3. 4. Where a “hole” in the ozone layer is.
  4. 6. When UV-C light reaches the stratosphere it splits oxygen molecules into oxygen atoms. These single atoms then react with other oxygen molecules to ______ ozone.
  5. 7. The smallest particle of a compound (substances made of two or more elements) that retains the properties of a compound. Water is H2O = Two hydrogen atoms and one oxygen atom
  6. 8. A treaty agreed to research the effects of human activities on the ozone layer and to take action against activities that are likely to have adverse effects on the ozone layer.
  7. 10. The ozone layer is expected to ______ around 2050
  8. 11. A gas that protects people and life on Earth by absorbing harmful radiation
  9. 12. Ozone is not the only gas in the stratosphere. Other gases containing nitrogen and hydrogen are also in the stratosphere and participate in reaction cycles that ______ ozone converting it back into oxygen.
  10. 13. substances that contain only one kind of matter.
  11. 14. describes how atoms interact when forming a chemical bond with another atom.