PART 1
1. http://www.ecokids.ca/pub/eco_info/topics/energy/ecostats/index.cfm
oil, natural gas and coal
2. Fossil fuels are made up of hydrogen and carbon. When fossil fuels are burned, the carbon combines with oxygen to yield carbon dioxide.
3. http://www.eia.doe.gov/kids/energyfacts/sources/renewable/renewable.html#whatis
http://www.eia.doe.gov/kids/energyfacts/sources/non-renewable/nonrenewable.html
5. http://van.physics.illinois.edu/qa/listing.php?id=1748
6. Many greenhouse gases occur naturally, such as water vapor, carbon dioxide, methane, nitrous oxide, and ozone. Others such as hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SF6) result exclusively from human industrial processes.
7. http://www.wikihow.com/Reduce-Your-Greenhouse-Gas-Emissions
8. http://www.weatherwizkids.com/cloud.htm
9. Fog is a suspension of tiny liquid water droplets. When the sun comes out, the heat from the sun's rays evaporates the water into invisible water vapor that rises into the atmosphere, hence the fog "disappears".
10. Refraction is the bending of light as it passes between materials of different optical density.
http://www.tiscali.co.uk/reference/encyclopaedia/hutchinson/m0006048.html
11. White will reflect sunlight.
12. Black will absorb all of the sunlight.
15. Sedimentary
16. http://www.gsa.state.al.us/gsa/fossil_imp.html
http://www.woodrow.org/teachers/bi/1995/fossilsintro.html
Part 2
1. CO2 gas in the atmosphere can be changes by human activity. Burning fossil fuels will release CO2 and increase CO2 levels.
Clear cutting forests (called Deforestation) will also increase levels of CO2 because trees will take in CO2 and release Oxygen through the process of photosynthesis.
Planting trees will decrease the amount of CO2 because the more trees the more CO2 will be taken in. Also the more trees the more Oxygen will be released into the atmosphere.
2. Water vapor can change as the heat changes. The hotter it is the more water will evaporate and increase the amount of water vapor in the air. The cooler it is the less water vapor.
If you live near a large body of water the water vapor level will be higher because there is more available water to evaporate.
3. Another name for a sandstone arch is a Natural Bridge. Go to the following link to read how they are formed
http://www.uky.edu/KGS/geoky/fieldtrip/naturalbridge/naturalbridgeguide.htm (you will need to scroll down until you see Natural Bridge)
4. When a river enters a larger body of water (Gulf, Sea, Ocean, Bay, etc.) all the sediment it was carrying will be deposited. The build up of the sediment becomes a delta.
5. Glaciers leave behind large rock deposits, U shaped valleys and
http://www.earthscape.org/t1/min01/min01ab.html
6. Debris, dust, and gases thrown into the atmosphere by the impact would have blocked sunlight, temporarily cooling the planet—and dim skies, produce cold summers, and poor harvests.
http://www.space.com/scienceastronomy/planetearth/asteroid_impact_020626.html
http://news.bbc.co.uk/2/hi/science/nature/233199.stm
8. http://www.divediscover.whoi.edu/ridge/infomod.html
http://geology.com/nsta/divergent-plate-boundaries.shtml
9. Mid – Ocean ridge is a divergent plate boundary (spreading apart) and a subduction zone is a convergent plate boundary (colliding).
Please look at the following animations:
Mid-Ocean Ridge or Mid-Atlantic Ridge