Environmental Studies

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Across
  1. 3. The splitting of the molecules by light including the splitting of water molecules in the early atmosphere, producing oxygen.
  2. 5. The force that attracts the body towards the centre of the earth, or towards any other physical body having mass.
  3. 8. the process green plants use to take nutrients from carbon dioxide and water.
  4. 11. The gases surrounding the earth. Different layers are characterised by their temperature, density, turbulence and composition.
  5. 12. Heat Capacity: the measure of the amount of heat energy needed to heat up a particular mass of a material to a particular temperature.
  6. 14. Gas: a gas that absorbs infrared radiation and causes atmospheric heating.
  7. 15. Rocks: A class of sedimentary rock, Lyme stone is an example of this.
  8. 18. Triatomic oxygen which absorbs UV light in the stratosphere.
Down
  1. 1. All the water on earth. found in all states, in a variety of reservoirs (ocean, ice caps, rivers, lakes, soil, ground water, atmosphere and living organisms).
  2. 2. Fuels: formed from plant or animal material that was buried millions of years ago, which was prevented from decomposing, heat and pressure caused chemical changes.
  3. 4. radiation: radiation consisting of particles, x-rays or gamma rays with sufficient energy to cause ionization in a medium through which it passes.
  4. 6. The relatively hard outer layer of the earth, consisting of the crust and upper layer of the mantle.
  5. 7. axis: the angle between an objects equatorial plane and orbital plane.
  6. 8. Solvent: most chemical reaction in cells take place dissolved in water.
  7. 9. The loss of water by evaporation from the stomata under the leaves.
  8. 10. radiation: invisible rays that are part of the energy that comes from the sun. (can burn the skin and cause skin cancer)
  9. 11. Expansion: Unusual expansion, usually applied to water, which expands as it is cooled below 4 degrees centigrade.
  10. 13. All living organisms on earth.
  11. 16. gases: the surrounding environmental gases that are available to organisms.
  12. 17. habitats: a living space for all aquatic animals.