Meteorology

The atmosphere is _____.

• the layer in which weather occurs

• the layer that contains the ozone layer

• the layer of water in the oceans

• the layer of gases that surrounds Earth

Instruments used to measure air pressure are called _____.

• thermometers

• hygrometers

• hydrometers

• barometers

When climbing a high mountain, you get out of breath easily because _____.

• the percentage of oxygen in the air decreases

• the air is more dense

• there is less oxygen in each cubic meter of air

• air pressure is greater

The layer of our atmosphere in which weather occurs is the _____.

• troposphere

• stratosphere

• mesosphere

• exosphere

The ozone layer protects living things on Earth from _____.

• visible light

• infrared rays

• ultraviolet radiation

• carbon dioxide

Which layer of the atmosphere protects Earth’s surface from being hit by most meteoroids?

• troposphere

• stratosphere

• mesosphere

• thermosphere

Heat transfer between two substances that are in contact is called____________.

• conduction

• thermal energy

• convection

• radiation

Heat from the sun reaches you by _____.

• conduction

• light emission

• convection

• radiation

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

Winds are caused by differences in _____.

• precipitation

• humidity

• air pressure

• turbulence