Clouds and Air Pressure

Winds are caused by differences in

• precipitation
• humidity
• air pressure
• turbulence

When you increase your altitude, the air pressure 

• increases
• decreases
• stays the same

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

• dust
• water
• cloud particles
• precipitation

They are highest clouds in the sky. They look curly, white and feathery. Usually mean good weather.

• Cumulus
• Cumulonimbus
• Cirrus
• Stratus

These clouds are the closest to the ground. Their name means layer- or sheet like. They bring rain or snow and cover most of the sky. 

• Cirrus
• Stratus
• Cumulonimbus
• Cumulus

Water vapor, which helps create clouds, gets into the air by ________________.

• precipitation
• evaporation
• condensation
• sublimation

Which most likely produces clear, cool weather?

• zero air pressure

• a low pressure system

• a high pressure system

• stable air pressure

Which is most associated with a thunderstorm?

• high air pressure

• winds blowing from the east

• winds blowing from the west

• low air pressure

What type of weather is usually found in low pressure areas?

• hot and dry

• wet and stormy

• cold and snowy

• sunny and humid

Mr. Jones observes the air pressure daily. Over the last couple of days the air pressure has been increasing. What weather will Mr. Jones most likely observe as a result?

• increasingly clear skies and more wind

• increasingly clear skies and dry weather

• increasingly cloudy skies and dry weather

• increasingly cloudy skies and humid weather