| A | B |
|---|
| tropism | a growth response of a plant toward or away from a stimulus |
| adaptation | enables a living thing to survive in its environment |
| response | what a living thing does as a result of a stimulus |
| insolation | the amount of the Sun's energy that reaches Earth at a given time and place |
| atmosphere | the blanket of gases that surrounds Earth |
| troposphere | the layer of the atmosphere closest to Earth's surface where weather occurs. |
| air pressure | the force put on a given area by the weight of the air above it |
| weather | what the lower atmosphere is like at any given place and time |
| barometer | a device for measuring air pressure |
| water vapor | water in the form of a gas |
| humidity | the amount of water vapor in the air |
| evaporation | the changing of a liquid into a gas |
| relative humidity | a comparison between condensation and evaporation |
| condensation | the changing of a gas into a liquid |
| stratus cloud | a cloud that forms a blanketlike layer |
| cumulus cloud | a puffy cloud that appears to rise up from a flat bottom |
| cirrus cloud | a high-altitude cloud with a featherlike shape, made of ice crystals |
| fog | a cloud that forms at ground level |
| precipitation | any form of water particles that falls from the atmosphere and reaches the ground |
| water cycle | the continuous movement of water between Earth's surface and the air, changing from liquid to gas to liquid |
| wind | air that moves horizontally |
| convection cell | a circular pattern of air rising, air sinking, and wind |
| sea breeze | wind that blows from sea to land |
| land breeze | wind that blows from land to sea |
| Coriolis effect | the curving of the path of a moving object caused by Earth's rotating |
| isobar | a line on a weather map connecting places with equal air pressure |
| wind vane | a device that indicates wind direction |
| anemometer | a device that measures wind speed |
