Convection Currents of Air and Ocean

Cool air is ______.

• less dense than warm air
• more dense than warm air

What causes warm air to rise?

• warm air is less dense than cold air

• warm air weighs more than cold air

• warm air has higher pressure than cold air

• warm air is more dense than cold air

Cool air sinking creates areas of _____ pressure underneath the sinking air.

• high

• low

Tags

NGSS.MS-ESS2-5

Warm air rising creates areas of ______ pressure underneath the rising air.

• high

• low

Tags

NGSS.MS-ESS2-5

What causes wind to blow?

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

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Which term best describes how the earth's atmosphere is heated?

• Spirally
• Unevenly
• Circularly
• Kinetically

Tags

NGSS.MS-ESS2-6

What creates the air pressure difference between the equator and the poles?

• the length of the seasons
• the amount of precipitation
• the duration of the solar year
• the uneven heating of the Earth's surface

Tags

NGSS.MS-ESS2-6

How does the air move in a sea breeze?

• wind moves from north to south
• wind moves from ocean to the land
• wind moves from the land to the ocean
• wind moves from south to north

Tags

NGSS.MS-ESS2-6

The Sun heats Earth's surfaces unevenly. An example follows....

During the day when the Sun heats Earth's surfaces, the air is warmer above the _____.

• land

• ocean

Tags

NGSS.MS-ESS2-6

Is this a land or a sea breeze?

• land breeze

• sea breeze

Tags

NGSS.MS-ESS2-5