| A | B |
| atmosphere | thin layer of gases around the Earth |
| nitrogen | the most commom gas in the atmosphere |
| mass | air has pressure because it has mass |
| decreases | as altitude increases, air pressure ______ |
| conduction | heat transfer between two substances that are in direct contact |
| radiation | heat from a fireplace reaches you by |
| covection | transfer of heat by the movement of a fluid |
| density | winds are caused by |
| local | winds that occur in a small area and are unpredictable |
| global | winds occur in a larger area and blow in specific patterns over long distances |
| sea breezes | breezes occur because land heats up faster than water |
| land breezes | breezes occur because water retains heat longer than land |
| 32 | freezing point of water in degrees farenheit |
| 212 | boiling point of water in degrees farenheit |
| 0 | freezing point of water in degrees celcius |
| 100 | boiling point of water in degrees celcius |
| corolios | earth's rotation make the winds seem to curve |
| burning fossil fuels | makes most of the air pollution |
| thermometer | measures air temperature |
| anemometer | measures wind speed |
| troposphere | layer of atomosphere in which the weather occurs |
| jet stream | bands of high speed winds that move from west to east |
| stratosphere | layer of the atmosphere that the ozone layer is located |
| differences in air pressure | what causes wind |
| mesosphere | layer that protects earth from meteorites |
| greenhouse effect | when gases in the air hold the energy that is radiated from the earth's surface |
| light | energy travels through space from the sun in the form of ____ waves |