What is air pressure?

• The force exerted by the weight of air molecules.

• The speed at which air molecules move.

• The temperature of the air.

• The density of air molecules.

Why don't we feel the weight of air pressure on our heads?

• Because air pressure is very light.

• Because air pressure is evenly distributed.

• Because air pressure only affects objects, not humans.

• Because our bodies are adapted to it.

Tags

NGSS.MS-ESS2-6

How does altitude affect air pressure?

• Air pressure remains constant regardless of altitude.

• Air pressure fluctuates randomly with altitude.

• Air pressure decreases as altitude increases.

• Air pressure increases as altitude increases.

What is the air pressure at sea level?

• 10.5 lbs per square inch

• 14.7 lbs per square inch

• 16.9 lbs per square inch

• 12.3 lbs per square inch

How does temperature affect air pressure?

• Higher temperatures decrease air pressure.

• Higher temperatures increase air pressure.

• Temperature has no effect on air pressure.

• Only cold temperatures affect air pressure.

What happens to air molecules when they gain thermal energy?

• They move faster and spread out.

• They stop moving.

• They become denser.

• They move slower and come closer together.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What type of weather is associated with high pressure systems?

• Rainy and stormy weather

• Snowy weather

• Sunny and dry weather

• Windy weather

Tags

NGSS.MS-ESS2-5

What does a low pressure system indicate?

• Air is sinking and spreading out.

• Air is moving faster.

• Air is rising and cooling.

• Air is becoming denser.

Tags

NGSS.MS-ESS2-5

What device is used to measure air pressure?

• Barometer

• Anemometer

• Hygrometer

• Thermometer

What do the letters H and L on a weather map represent?

• High and Low wind speeds

• High and Low pressure systems

• High and Low humidity

• High and Low temperatures

Tags

NGSS.MS-ESS2-5