End of Year Review Atmosphere Unit

The atmosphere is divided into four layers. Name the order of the layers starting with the layer closest to the earth.

• Troposphere, Mesosphere, Stratosphere, Thermosphere

• Thermosphere, Mesosphere, Stratosphere, Troposphere

• Troposphere, Stratosphere, Mesosphere, Thermosphere

• Stratosphere, Troposphere, Mesosphere, Thermosphere

Which layer of the atmosphere has most of the atmosphere's mass and is where all the earth's weather occurs?

• Thermosphere

• Stratosphere

• Troposphere

• Mesosphere

The ozone layer is found in which layer?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

Ozone is a harmful pollutant that is created when exhaust pollution reacts with __________________.

• oxygen

• smoke

• sunlight

• nitrogen

What percentage of the Earth's atmosphere is made up of oxygen?

• 78%

• 21%

• 1%

What percentage of the earth's atmosphere is made up of nitrogen?

• 78%

• 21%

• 1%

The process by which gases hold heat in the atmosphere is

• greenhouse gases

• greenhouse effect

• conduction

• convection

The ________________________ in the atmosphere helps protect Earth from harmful solar radiation.

• magnetic field

• gravitational pull

• clouds

• Coriolis Effect

Heat given off by electromagnetic waves through indirect touch is

• conduction

• convection

• radiation

The movement of matter in a circular motion (remember warm air rises and cold air sinks) is called ___________________.

• radiation

• conduction

• convection