the envelope of gases surrounding the earth or another planet.

tiny solid particles or liquid droplets that remain suspended in the atmosphere for a long time

the layer closest to Earth, where almost all weather occurs; the thinnest layer

The direct transfer of heat from one substance to another substance that it is touching.

the layer of the atmosphere that contains the ozone layer; temperature increases as you go up; layer B

is made up of three oxygen molecules and is what protects us from the sun's harmful UV radiation

The layer of Earth's atmosphere immediately above the stratosphere; layer C

The coldest layer of the atmosphere; layer C

The uppermost layer of the atmosphere, in which temperature increases as altitude increases; layer D

The outer layer of the thermosphere, extending outward into space; layer E

Region of space affected by Earth's magnetic field.

the condition of the atmosphere at a particular location and time

scientists who study the causes of weather and try to predict it

A measure of the average energy of motion of the particles of a substance.

process of heat transfer by the circulation or movement of a liquid or a gas

the amount of water vapor in the air

holding as much water or moisture as can be absorbed; thoroughly soaked.

The temperature at which condensation begins

the percentage of water vapor in the air compared to the maximum amount the air could hold

a visible mass of condensed water vapor floating in the atmosphere, typically high above the ground.

fluffy, white clouds, usually with flat bottoms, that look like rounded piles of cotton

look like flat blankets and are usually the lowest clouds in the sky

They appear as grey puffy masses and are mid level clouds

wispy, feathery clouds made of ice crystals that form at high levels

Towering, tall clouds with gray bottoms that can bring heavy rain, lightning, and tornados.

The horizontal movement of air from an area of high pressure to an area of lower pressure

measures wind speed

The atmosphere protects things on Earth from ___.

The effect of Earth's rotation on the direction of winds and currents.

High speed winds in the upper atmosphere that flow from WEST to EAST.

large body of air with the same temperature and humidity

A boundary between two air masses

the front of an advancing mass of colder air

the front of an advancing mass of warmer air

A boundary between air masses that doesn't move possibly causing rain for several days

A warm front that's overtaken by a cold front.

a storm that produces lightening and thunder and often heavy rains and strong winds

violent, spiraling winds that move in a narrow path over land.

a large, powerful windstorm that forms over warm ocean waters

A severe weather ___ means that the conditions are right for extreme weather;

severe weather is occurring in the general area

TRUE or FALSE: The atmosphere absorbs and distributes warmth from the Sun.

Which of the following is NOT a property of air?

This is the driving force of Earth's weather.

The Earth's atmosphere does not move out into space due to ___.

78% of Earth's atmosphere is composed of ___.

21% of Earth's atmosphere is composed of ___.

1% of Earth's atmosphere is composed of ___.

This is the percentage of the Sun's energy that passes through the troposphere and reaches Earth's surface.

TRUE or FALSE: The Earth's surface is heated by convection.

This layer in the stratosphere absorbs much of the Sun's ultraviolet radiation. This is why temperature increases in this layer as you go up in altitude.

Earth is many times called the ____ or blue planet.

Earth's surface is made up of about ____ water.

Earth's water is in constant motion in a never-ending process called the ____.

Does air pressure INCREASE or DECREASE with altitude?