Movement of Air

What causes differences in air pressure around the earth?

• less dense air near the poles

• unequal heating of the earth

• differences in gravity

• Oxygen levels

What causes warm air to rise?

• the fact that it's less dense than cold air 
• The fact that it weighs more than cold air 
• The fact that it has higher pressure than cold
• the fact that its more dense than cold air 

What causes wind to blow?

• Differences in longitude 
• Shock waves from clouds 
• Differences in air temperature and pressure 
• The rotation of the earth

The curving of air to the right in the Northern hemisphere is caused by ___________ and is called the _________ effect.

• Earth's rotation...Coriolis
• Earth's revolution...Coriolis
• Earth's rotation...Doppler
• Earth's revolution...Doppler

Which statement best describes the movement of wind?

• Wind moves faster when there is greater pressure differences.

• Wind moves slower when there is lower pressure differences.

• Wind moves faster when there is a lower pressure difference.

• Wind moves slower when there is a greater pressure difference.

Wind always blows from areas of _______ to areas of ______ pressure.

• hot; cold
• low; high
• high; low
• cold; hot

What concept describes how warm air and cool air circulate to keep the temperature stable in the atmosphere?

• prevailing winds
• convection
• air pressure
• Coriolis effect

Warm air is found at the ___________ and it ____________ because it is ___________________ than cooler air.

• poles, sinks, more dense

• equator, rises, less dense

Cool air is found at the ___________ and it ____________ because it is ___________________ than warm air.

• poles, sinks, more dense

• equator, rises, less dense

Cool air creates areas of _________________

• high pressure, high density

• low pressure, low density

• high pressure, low density

• low pressure, high density