Air Pressure Explained

About how many pounds of pressure (at sea level) does air push on our bodies?

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• 14.5 lbs

• 15 lbs

• 15.5 lbs

• 16 lbs

Tags

NGSS.MS-ESS2-5

What are the air molecules like the farther you go up in the atmosphere?

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• • More dense and closer together.

  
  

• • More dense and farther apart.

  
  

• • Less dense and closer together.

  
  

• • Less dense and farther apart.

  
  

Why do your ears pop when a plane takes off?

What tool is used to measure air pressure?

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• barometer

• anemometer

• wind vane

• thermometer

What is true about the balloon experiment?

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• • The balloon gets bigger when the bottle is placed in warm water, just like warm air in the atmosphere contracts, falls, and creates a high pressure area.

  
  

• • The balloon gets bigger when the bottle is placed in warm water, just like cold air in the atmosphere expands, rises, and creates a low pressure area.

  
  

• • The balloon gets bigger when the bottle is placed in warm water, just like warm air in the atmosphere expands, rises, and creates a low pressure area.

  
  

• • The balloon gets smaller when the bottle is placed in warm water, just like warm air in the atmosphere expands, rises, and creates a low pressure area.

  
  

Tags

NGSS.MS-PS1-4

Explain how the homemade barometer works. Why does the pointer (straw) move up or down?

Tags

NGSS.MS-ESS2-5

What does a low pressure system generally mean?

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• • Nice weather and sunny skies.

  
  

• • Nice weather and a lot of precipitation.

  
  

• • Bad weather, sunny skies, and no precipitation.

  
  

• • Bad weather, storms, and precipitation.

  
  

Tags

NGSS.MS-ESS2-5