| A | B |
|---|
| irrigation | The process of supplying water to areas of land to make them suitable for growing crops |
| water vapor | The invisible gaseous phase of water |
| photosynthesis | The process by which plants use water, carbon dioxide and energy from the sun to make food |
| groundwater | Water that fills the cracks and pores in underground soil and rock layers |
| habitat | The place where an organism lives and that provides the things it needs to survive |
| polar molecule | A molecule that has electrically charged areas |
| solution | A mixture that forms when one substance dissolves another |
| evaporation | The process by which molecules at the surface of a liquid absorb enough energy to change to the gaseous phase |
| surface tension | The tightness across the surface of water that is caused by the polar molecules pulling on each other |
| solvent | A substance that dissolves another substance, forming a solution |
| condensation | Process by which a gas changes to a liquid |
| capillary action | The combined force of attraction among water molecules and with the molecules of the surrounding materials |
| state | A form of matter; solid, liquid or gas |
| specific heat | The amount of heat needed to increase the temperature of a certain mass of substance by 1 degree Celsius |
| water cycle | The continuous process by which water moves through the living and nonliving parts of the environment |
| transpiration | The process by which plants release water vapor through their leaves |
| precipitation | Water that falls to Earth as rain, snow, sleet or hail |
| watershed | The land area the supplies water to a river or creek |
| salinity | The total amount of dissolved salts in a water sample |
| concentration | The amount of one substance in a certain volume of another substance |
