1. The Hydrologic Cycle
... generally occurs in the atmosphere when warm air rises, cools and looses its capacity to hold water vapor. The excess water vapor condenses to form cloud droplets. The upward motions that generate clouds can be produced by convection in unstable air. In meteorology, convection refers primarily to atmospheric motions in the vertical direction. As the earth is heated by the sun, different surfaces ... absorb different amounts of energy and convection may occur where the surface heats up very rapidly. As the surface warms, it heats the overlying air, which gradually becomes less dense than ...
- Word Count: 1332
- Approx Pages: 5
- Grade Level: High School