The Atmosphere

The Atmosphere

Study Guide

You don't have to answer the questions here, but think about what your answer would be.

Atmospheric Pressure

• Pressure exerted on Earth by atmosphere..

• Decreases with increased altitude

• 14.7 pounds per square inch at sea level

Atmospheric Density

• At greater altitude, the same volume of air contains fewer molecules of gas

• Measured with a barometer

Poll

Does the thermosphere or the troposphere have the greatest atmospheric pressure?

• Thermosphere

• Troposphere

Atmospheric Warming

• 49% absorbed by earth's surface

• 20% reflected back by clouds

• 20% absorbed by atmosphere and clouds

• 6% scattered by atmosphere

• 5% reflected by earth's surface

Open Ended

Is air matter?

Open Ended

Does air have mass?

Open Ended

How do you know it does/doesn't have mass?

Open Ended

Why do your ears pop when flying?

Multiple Choice

______________________ layer of gases that surround the earth.

• stratosphere

• mesosphere

• atmosphere

• hemisphere

Multiple Choice

Supports life on Earth by protecting it from dangerous _____________________ _______________.

• electromagnetic rays

• weather storms

• extreme weather

• laser beams

Multiple Choice

Provides ____________ plants and animals need to breathe

• masks

• hoses

• gases

• air

Multiple Choice

What percent of the atmosphere is nitrogen?

• 21%

• 99%

• 67%

• 78%

Multiple Choice

What percent of the atmosphere is oxygen?

• 78%

• 99%

• 21%

• 15%

Multiple Choice

Nitrogen – removed from atmosphere by _____________________ and ___________________________

• bacteria and lightning

• superman and batman

• plants and animals

• cars and trucks

Multiple Choice

Oxygen – Released into atmosphere by ___________________ as they photosynthesize.

• animals

• raindrops

• soil

• plants

Multiple Choice

Water vapor (H20) – amount _________________ in the atmosphere

• water

• varies

• stays

• moisture

Multiple Choice

Carbon dioxide - Removed from the atmosphere by ____________________________.

• towers

• erasers

• cars

• plants

Multiple Choice

Pressure exerted on earth by the ___________________________.

• gravity

• moon

• sun

• atmosphere

Multiple Choice

Air pressure decreases with ______________________ in altitude.

• increase

• decrease

Multiple Choice

At greater altitudes the same volume of air contains ________________molecules of gases.

• more

• fewer

Multiple Choice

The atmosphere is warmed by ____________________ radiation

• ultraviolet

• magnetic

• solar

• lunar

Multiple Choice

Which of the following shows the layers of the atmosphere in the correct order from earth's surface?

• thermosphere, stratosphere, mesosphere, thermosphere, exosphere

• troposphere, stratosphere, thermosphere, mesosphere, exosphere

• stratosphere, mesosphere, troposphere, exosphere, thermosphere

• troposphere, stratosphere, mesosphere, thermosphere, exosphere

Multiple Choice

Weather takes place in this layer of the atmosphere.

• troposphere

• stratosphere

• mesosphere

• thermosphere

• exosphere

Multiple Choice

The ozone layer is found in this layer of the atmosphere.

• troposphere

• stratosphere

• mesosphere

• thermosphere

• exosphere

Multiple Choice

This is the coldest layer of the atmosphere and meteors burn up in this layer.

• troposphere

• stratosphere

• mesosphere

• thermosphere

• exosphere

Multiple Choice

This is the hottest layer of the atmosphere.

• exosphere

• mesosphere

• thermosphere

• troposphere

Multiple Choice

This layer is the beginning of outer space.

• stratosphere

• exosphere

• endosphere

• outersphere