weather

Warm air is

• Less dense
• More dense

Wind blows from areas of high pressure to areas of low pressure

• True
• False

Warm air rises because it is which?

• Low pressure and weighs less
• Low pressure and weighs more
• High pressure and weighs less
• High pressure and weighs more

The greater the DIFFERENCES IN AIR PRESSURE between high and low pressure the ___________ the wind

• Faster
• Slower

Which most likely produces clear, cool weather?

• zero air pressure
• stable air pressure
• a low pressure system
• a high pressure system

Clouds are made up of tiny drops of ______ or ice. The moisture in the cloud affects the weather.

• dust
• water
• cloud particles
• precipitation

What causes winds?

• differences in precipitation
• differences in humidity
• differences in air pressure

The name of the global winds that move from west to east across the United States is called

• Trade Winds
• Prevailing Westerlies
• Polar Easterlies
• Doldrums

_______ pressure systems are characterized by sinking air.

• High
• Low

At the equator the air is usually ________ because it is warm.

• rising
• sinking