Atmosphere

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 the Earth

Earth’s atmosphere is important to living things because it_____.

• contains dust and other particles

• is very thin compared to the size of Earth

• provides all the gases that living things need to survive

• maintains a constant relative humidity

Earth’s atmosphere traps energy from the sun, which _____.

• allows water to exist as a liquid

• allows solar radiation to penetrate to the surface

• allows ozone to form easily

• causes meteors to burn up

Instruments used to measure air pressure are called _____.

• thermometers

• hygrometers

• hydrometers

• barometers

As you rise upwards in the atmosphere, air pressure _____.

• increases

• decreases

• doesn't change

• first increases, then decreases

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

• exosphere

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