| A | B |
|---|
| ELECTROMAGNETIC WAVE | A form of energy that can travel through space. |
| RADIATION | The direct transfer of energy by electromagnetic waves. |
| GREENHOUSE EFFECT | The process by which HEAT is TRAPPED in the atmosphere by water vapor, carbon dioxide, methane, and other gases. Forms a "BLANKET" around Earth. |
| THERMAL ENERGY | Energy of motion in the molecules of a substance. |
| TEMPERATURE | Average amount of energy of motion in the molecules of a substance. |
| HEAT | Energy TRANSFERRED from a HOTTER object to a COOLER one. |
| CONDUCTION | Direct transfer of heat from one substance to another that is TOUCHING. |
| CONVECTION | Transfer of heat by the movement of a FLUID. |
| WIND | Horizontal movement of air from an area of high pressure to an area of low pressure. |
| ANEMOMETER | Instrument used to measure WIND SPEED. |
| WIND-CHILL FACTOR | Increased cooling caused by wind. |
| SEA BREEZE | Flow of air from an OCEAN or LAKE to LAND. |
| LAND BREEZE | Flow of air from LAND to a body of WATER. |
| CORIOLIS EFFECT | The way EARTH'S ROTATION makes wind in the Northern Hemisphere curve to the right and winds in the Souther Hemisphere curve to the left. |
| JET STREAM | A band of high-speed wind about 10 kilometers above Earth's surface. |
| EVAPORATION | Process by which WATER MOLECULES in liquid water escape into the air as water vapor. |
| HUMIDITY | Measure of the amount of water vapor in the air. |
| PSYCHROMETER | Instrument used to measure relative humidity, consisting of a wet bulb thermometer and a dry bulb thermometer. |
| CONDENSATION | Process by which molecules of water vapor in the air become liquid water. |
| DEW POINT | Temperature at which CONDENSATION begins. |
| CUMULUS | Clouds that form less than 2km above the ground; Look like FLUFFY, ROUNDED PILES of COTTON. |
| STRATUS | Clouds that form in FLAT LAYERS. |
| CIRRUS | WISPY, FEATHERY clouds made mostly of ICE CRYSTALS that form at HIGH LEVELS, above 6km. |
| PRECIPITATION | Any form of water that falls from clouds and reaches Earth's surface. |
| DROUGHT | Long periods of low precipitation. |
