Weather Ch 2

Weather is the state of the ____ at a specific time and place.

• atmosphere

• rain

• Earth

• hydrosphere

The ________ evaporates water into the atmosphere forming clouds and returning water to Earth as rain or snow. The Sun also _____ air.

• Earth's heat. moon

• Sun's heat. moon

• Sun's heat. heats

• rocks. spins

Air temperature is a measure of the movement of _____.

• thermometers

• everything around you

• air molecules

• waterways

When the Sun's energy causes air molecules to move rapidly, ____ and it feels _____.

• temperatures start high...cool

• temperatures are cooler....hot

• temperatures are high...warm

• precipitation is stormy....rainy

When less of the Suns energy reaches air molecules, they move _____ _____ and it feels ____

• less rapidly....colder

• more rapidly....colder

• less rapidly....hotter

• more rapidly....hotter

Wind is air moving in a ________ ___________.

• specific direction

• constant orbit

• random pattern with no explanation

• wedge tornado

As the sun heats air, the air expands and becomes _____.

• more dense

• less dense

• more humid

• cooler

Air that is less dense rises and has _______ ______ _____.

• cooler humidity

• more molecules

• always negative polarity

• low atmospheric pressure

Cooler air is ______ than warmer air.

Cooler air sinks, causing ______ ____ ____>

• hotter

  high atmospheric pressure

• faster

  lower relative humidity

• less dense

  higher atmospheric pressure

• denser

  high atmospheric pressure

Air moves from _______, causing wind.

• high pressure areas to low pressure areas

• low pressure areas to high pressure areas

• rainy areas to low pressure areas

• high pressure areas to snowy areas