| A | B |
|---|
| Atmosphere | The layer of gas surrounding planet Earth that is held in place gravity and is made of elements – mainly nitrogen and oxygen |
| Condensation | The change from a gas state to a liquid state |
| Crystallization | formation of sold structures from particles (stuff) in a solution that are in specific patterns |
| Evaporation | Change of a liquid to a gas or vapor |
| Gravity | The force that causes objects with mass (amount of stuff that make up something) to attract to one another |
| Precipitation | rain, snow, sleet or hail that falls from clouds in the sky |
| Radiant Energy | Energy from the Sun that reaches Earth as visible light and ultraviolet and infrared (heat) radiation |
| Transpiration | The process where plants lose water (water vapor) through the stomata (tiny openings) in their leaves |
| Water Cycle | The constant movement of water through the land, air, oceans, and living things |
| Absorption | The transfer of energy in a medium (what it is moving through) |
| Groundwater | Water the collects in cracks and pores in underground soil and rock layers |
| Percolation | When water soaks into the ground and moves downward through spaces between soil and rocks |
| Runoff | Rainfall and surface water that drains or flows from the land into streams, rivers, lakes, or the ocean |
| Surface Water | water from precipitation that drains into a gully that flows into a stream, which flows into a river, lake, other water areas, or the ocean |
| Thermal Energy | the total kinetic (motion) energy of the tiny particles that make up matter. The faster the particles move, the warmer the matter becomes. |
