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unit 11
earth systems
| Question | Answer |
|---|---|
| water cycle | Rain, snow, and hail fall on the oceans and land because of gravity |
| evaporation | occurs when liquid water changes into water vapor |
| transpiration | About 10% of the water in the atmosphere comes from transpiration. |
| sublimation | Sublimation can happen when dry air blows over ice or snow |
| condensation | is the change of state from a gas to a liquid |
| precipitation | is any form of water that falls to Earth from clouds |
| weather | is the condition of Earth’s atmosphere at a particular time and place |
| humidity | As more water evaporates and becomes water vapor, the humidity of the air increases |
| relative humidity | is the amount of water vapor in the air compared to the amount of water vapor needed to reach saturation |
| dew point | is the temperature at which more condensation than evaporation occurs |
| air pressure | is the force of air molecules pushing on an area. |
| wind | is air that moves horizontally, or parallel to the ground |
| visibility | is a measure of the transparency of the atmosphere |
| air mass | is a large volume of air in which temperature and moisture content are nearly the same throughout |
| front | forms between the air masses |
| jet stream | Air moves in jet streams with speeds that are at least 92 kilometers per hour and are often greater than 180 kilometers per hour |
| thunderstorm | is an intense local storm that forms strong winds, heavy rain, lightning, thunder, and sometimes hail |
| lightning | is an electric discharge that happens between a positively charged area and a negatively charged area |
| thunder | the sound created by the rapid expansion of air along a lightning strike |
| hurricane | is a tropical low-pressure system with winds blowing at speeds of 119 km/h (74 mi/h) or more—strong enough to uproot trees. |
| storm surge | In a storm surge, the sea level rises several meters, backing up rivers and flooding the shore |
| tornado | is a destructive, rotating column of air that has very high wind speeds and that is sometimes visible as a funnel-shaped cloud. |
| sinkhole | are holes in the ground that form when a cave collapses. |
| wildfire | are uncontrolled fires burning in natural areas. |
| muck fire | starts. Muck fires usually occur during the dry season or droughts, when the soil in swamps and marshes is dry |
| climate | on the other hand, describes the weather conditions in an area over a long period of time |
| latitude | is the angular distance in degrees north and south from the equator. |
| topography | Topography influences the wind patterns and the transfer of energy in an area. |
| elevation | refers to the height of an area above sea level. Temperature changes as elevation changes |
| surface currents | Surface currents are driven by winds and carry warm water away from the equator and carry cool water away from the poles. |