| A | B |
|---|
| solar radiation | Energy from the sun that reaches Earth as waves |
| ultraviolet radiation | Waves with shorter wavelengths than those of visible light |
| climate | The average of all weather conditions in an area over a long period of time |
| water cycle | The process by which water moves from Earth to the atomosphere and back |
| current | a steady streamlike movement of matter in one direction |
| thermal gradient | a gradual increase or decrease in temperature over a distance |
| air pressure | the force of volume of air pressing down on a unit of area |
| coriolis effect | a change in the direction of motion of a freely moving object, caused by Earth's rotation. |
| condensation | water vapor changes to water droplets |
| relative humidity | ratio of the actual amount of water capor in air to the total amount it could contain at that tempertature |
| front | the area where two air masses collide |
