SCIENCE | UNIT 5 VOCABULARY 2020-2021

Question 1

Air Mass

Answer 1

Air that has the same temperature, humidity, and pressure.

Question 2

Air Pressure

Answer 2

The force exerted on a surface by the air above it as gravity pulls it to Earth. Commonly measured with a barometer.

Question 3

Anemometer

Answer 3

an instrument for measuring the speed of the wind, or of any current of gas.

Question 4

Atmosphere

Answer 4

the envelope of gases surrounding the earth or another planet.

Question 5

Convection Currents

Answer 5

a current in a fluid that results from convection.

Question 6

Coriolis Effect

Answer 6

an effect whereby a mass moving in a rotating system experiences a force (the Coriolis force ) acting perpendicular to the direction of motion and to the axis of rotation.

Question 7

Humidity

Answer 7

Humidity is the amount of water vapor in the air. If there is a lot of water vapor in the air, the humidity will be high.

Question 8

Jet Stream

Answer 8

a narrow variable band of very strong predominantly westerly air currents encircling the globe several miles above the earth.

Question 9

Prevailing Winds

Answer 9

a wind from the direction that is predominant at a particular place or season.

Question 10

Psychrometers

Answer 10

A psychrometer measures humidity by taking both a wet-bulb and a dry-bulb temperature reading. With those two values known, the other properties of the air, including its moisture content, can be determined by computation or by reading a psychrometric chart.

Question 11

Weather Front

Answer 11

A weather front is a boundary separating air masses of different characteristics such as air density, wind, and humidity.