| A | B |
|---|
| TEMPERATURE | The average amount of energy of motion in the molecule of a substance. |
| HEAT | The energy transferred from a hotter object to a cooler one. |
| CORIOLIS EFFECT | The way Earth's rotation makes winds in the Northern Hemisphere curve to the right and winds in the Southern Hemisphere curve to the left. |
| EVAPORATION | The process by which molecules at the surface of a liquid, such as water, absorb enough energy to change to a gaseous state, such as water vapor. |
| HUMIDITY | A measure of the amount of water vapor in the air. |
| CONDENSATION | The process by which a gas, such as water vapor, changes to a liquid, such as water. |
| CUMULUS | Clouds that form less than 2 kilometers above the ground and 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 about 6 kilometers. |
| CONDENSATION NUCLEII | dust, ash or salt particles around which water vapor condenses to form a water drop |
| HIGH PRESSURE | there are usually few or no clouds with this kind of pressure |
| LOW PRESSURE | clouds are usually associated with this kind of pressure |
| CUMULONIMBUS | puffy clouds that are raining, often called thunderheads |
| NIMBOSTRATUS | layered clouds that are raining |
| CIRRO STRATUS | high level layered clouds |
| CIRROCUMULUS | high level puffy clouds |
| ALTOSTRATUS | middle layered |
| ALTOCUMULUS | middle level puffy clouds |
| STRATOCUMULUS | layered and puffy clouds together |
| HUMIDITY | amount of moisture in the air |
| FOG | cloud on the ground |
| DEW POINT | temperature at which water vapor turns to water drops |
| WATER VAPOR | water in the gas state |
| ICE | water in the solid state |
| WATER DROPS | water in the liquid state |
| WARM AIR | can hold more water vapor |
| COOL AIR | can hold less water vapor |
