Chapter 5 Predicting Weather

Lesson 1 – Air and Weather Click on the following link and answer the questions. http://www.mhschool.com/sciejournal/ejournal/rc_base.php?reportID=307&vGrade=0022841377&vUnit=D&vChapter=7

thermometer A tool used to measure temperature.

Temperature A measure of how hot or cold something is.

Rain gauge An instrument that measures how much rain has fallen.

barometer An instrument used to measure air pressure.

Anemometer An instrument used to measure wind speed.

Wind vane An instrument that moves to show which way the wind is blowing from.

Air pressure The force of air pushing down on an area.

humidity A measure of how much water vapor is in the air.

Atmosphere The blanket of air, or gases, surrounding Earth.

Lesson 2 – Tracking the Weather

Air mass A large area of the atmosphere where the air has similar properties throughout.

front A boundary between two air masses that have different temperatures.

Warm front A boundary between air masses where a warm air mass slides up and over a cold air mass.

Cold front A boundary between air masses where a cold air mass pushes under a warm air mass.

Stationary front A boundary between air masses that are not moving.

forecast A prediction or the act of making a prediction, often having to do with weather.

Climate

climate The pattern of seasonal weather in a region that repeats year after year.

current A directed flow of a gas or liquid.