| A | B |
|---|
| atmosphere | mixture of gases that surrounds the Earth |
| conduction | direct transfer of heat energy from one substance to another |
| convection | transfer of heat energy in a fluid (gas or liquid) |
| radiation | transfer of heat energy through empty space |
| greenhouse effect | process in which carbon dioxide and other gases in the atmosphere absorb infared radiation from the sun, forming a "heat blanket" around the Earth |
| thermometer | instrument used to measure temperature |
| air pressure | measure of the force of air pressing down on the Earth's surface |
| barometer | instrument used to measure air pressure |
| farenheight/celcius | the scales used to read temperature on a thermometer; scientists use the celcius scale |
| millibar/inches | the scales used to read air pressure on a barometer |
| troposphere | the layer of the atmosphere where weather takes place |
