Chapter 8: Weather Patterns

Differences in air temperatures create ​ (a)   .

• winds
• clouds
• rain
• hurricanes

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About ​ (a)   of the air is oxygen.​ ​

• 2/10
• 1/4
• 3/6

There are ​ (a)   layers of Earth's atmosphere.

• 5
• 3
• 7

As you go up through the five layers, the​ (a)   and air pressure changes.

• temperature
• humidity
• wind speed
• air pressure

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NGSS.MS-ESS2-5

Air pressure ​ (a)   as you go up through the atmosphere because the gas particles in the air get ​ (b)   apart and there is less air above you.

• decreases
• farther
• increases
• stays the same

Land gets ​ (a)   more quickly in sunlight than does water.

• warm
• faster
• slower
• cooler

In cool air, gas particles are ​ (a)   together than in warm air.

• closer
• farther apart
• stationary
• same

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Winds generally blow from ​​ (a)   to east over much of the United States.

• west
• north
• south
• east

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An​ (a)   is a large body of air with similar properties all through it.

• air mass
• ocean mass
• cloud mass
• front

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NGSS.MS-ESS2-5

If you are having several warm, clear days, the weather will remain the ​ (a)   until a new air mass comes into your area.

• same
• different
• cloudy
• cooler

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