| A | B |
|---|
| water cycle | The continous movement of water between Earth's surface and the atmosphere through evaporation, condenstation, and precipitation. |
| ionosphere | The laver of eletrically charged particles in the thermosphere. |
| hydrosphere | All the water that is found at Earth's surface, of which 97 percent is salt water and only three percent is fresh water. |
| troposphere | The layer of the atmosphere closest to the ground: contains 75 percent of the atmospheric gases, dust, ice, and liquid water and is where weather, smog, and clouds occur. |
| radiation | Energy that travels by waves in all directions from its source. The transfer of ene |
| ozone layer | The stratospheric layer with a high concentration of ozone; protects Earth by absorbing harmful ultraviolet radiation. |
| land breeze | The nightly movements of air created when cold air over the land forces up the warmer air above the sea. |
| chlorofluorocarbon | A group of chemical compounds used in refrigerators, aerosol sprays, and foam packaging, that destroy ozone molecules. |
| conduction | The transfer of thermal energy from particle to particle through a material when there is a temperature difference. The transfer of energy that occurs when molecules bump into each other. |
| convection | The transfer of thermal energy that happens when particles move from one place to another where there is a temperature difference, occurs in gases and liquids. |
| Coriolis effect | Changes the direction of all free moving objects to the right north of the equator and to the left to the south of the equator; creates wind patterns across the world and results from the rotation of Earth. |
| sea breeze | The daily movements of air created when cooler, denser air moving inland from the ocean forces warm air over the land to rise. |
| ultravioled radiation | The type of energy that comes to Earth from the sun and is mostly absorbed by the ozone layer; can cause cnacer and other health problems in many types of plants and animals. |
| jet stream | The narrow belt of strong winds that blows near the top of the troposphere. |
