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