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.

frontA boundary between two air masses that have different temperatures.

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

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

Stationary frontA boundary between air masses that are not moving.

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

Climate

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

currentA directed flow of a gas or liquid.