2.3 Winds

Most of the heating of the troposphere comes from

• conduction

• condensation

• convection

• radiation

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Convection takes place because

• warm air is more dense than humid air

• warm and cold air have the same density

• cold air is less dense than warm air

• cold air is more dense than warm air

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Earth's rotation makes global winds curve. This is called the

• convection effect

• global effect

• Coriolis effect

• rotational effect

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Winds are caused by differences in

• precipitation

• humidity

• air pressure

• turbulence

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What's radiation?

• What you feel when you just woke up

• When Earth completes one round to the Sun

• The transfer of energy through waves

• A flame that causes burns.

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Cool air tends to

• be less dense and flow over warm air

• be lifted up by more dense warm air

• be more dense and flow under warm air

• mix easily with warm air masses

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Heat from the sun reaches you by

• conduction

• light emission

• convection

• radiation

The greenhouse effect is

• the absorption of energy by clouds

• a gradual increase in the temperature of the atmosphere

• the reflection of solar energy into the atmosphere

• the process by which gases hold heat in the atmosphere

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Heat transfer between two substances that are in contact is called

• conduction

• thermal energy

• convection

• radiation

Wavelengths that are a little bit shorter than visible light are

• infared

• red

• violet

• ultraviolet