Air Pressure & Wind

What are the three properties of air?

• Weight, Space, Pressure

• Color, Taste, Smell

• Heat, Moisture, Light

• Sound, Brightness, Texture

What is the definition of air pressure?

• The weight of air on Earth's surface

• The force exerted by air on Earth's surface

• The temperature change caused by air

• The humidity level in the air

What instrument is used to measure air pressure?

• Thermometer

• Barometer

• Anemometer

• Hygrometer

What happens to air pressure as you go up in the atmosphere?

• It increases

• It stays the same

• It decreases

• It fluctuates unpredictably

Complete the sentence: "I can feel air pressure when..."

• I am underwater

• I am in a vacuum

• I am listening to music

• I am running fast

What is a barometer?

• An instrument that measures water depth

• An instrument that measures air pressure

• An instrument that measures wind speed

• An instrument that measures temperature

What is the standard atmospheric pressure at sea level as indicated by a mercury barometer?

• 560 mm Hg

• 760 mm Hg

• 860 mm Hg

• 960 mm Hg

What can the atmosphere be thought of as?

• A layer of vacuum that surrounds Earth.

• An ocean of air that surrounds Earth.

• A solid shell around the Earth.

• A body of water covering the Earth's surface.

Why does air exert a force equally in all directions?

• Because air is static and doesn't move.

• Because air only moves upward.

• Because gas molecules are constantly moving in all directions.

• Because air is heavier in certain directions.

What causes air to press down?

• The force of gravity pulling it downward.

• The rotation of the Earth.

• The magnetic field of the Earth.

• The upward movement of air.

Tags

NGSS.MS-PS2-4