The boundary between air masses of different densities and usually different temperatures.
What is a front?
100
The gases that make up the atmosphere.
What is 78% nitrogen and 21% oxygen?
100
The average weather conditions of an area over a long period of time.
What is climate?
100
The process by which gases in the atmosphere absorb thermal energy and radiate it back to Earth.
What is the Greenhouse Effect?
200
Thin, feathery white clouds found at high altitudes.
What is a cirrus cloud?
200
A front formed when a warm air mass is caught between two colder air masses. It may bring cool temperatures and large amounts of rain and snow.
What is an occluded front?
200
The coldest layer of the atmosphere, also known as the middle layer.
What is the mesosphere?
200
The short-term conditions of the atmosphere at a certain time and place.
What is weather?
200
A gradual increase in average global temperatures that may be due to the greenhouse gases that are absorbed in the atmosphere.
What is global warming?
300
A cloud that forms in layers that cover large areas of the sky and tend to block out the sun. When they become dark, they can produce light to heavy rain.
What is a stratus cloud?
300
A front that forms where cold air moves under warm air. It may bring thunderstorms, heavy rain or snow followed by cooler temperatures.
What is a cold front?
300
The layer of the atmosphere that is home to the protective ozone layer.
What is the stratosphere?
300
Any form of water that falls to the Earth's surface from clouds.
What is precipitation?
300
Major things that effect the climate of an area.
What are latitude, prevailing winds, mountains, large bodies of water, and ocean currents?
400
A puffy, white cloud that tends to have a flat bottom. It usually indicates fair weather.
What is a cumulus cloud?
400
A front that forms where warm air moves over cold air. It may bring drizzly rain followed by clear, warm weather.
What is warm front?
400
The layer of the atmosphere in which weather occurs and life exists.
What is the troposphere?
400
The amount of water vapor in the air.
What is humidity?
400
The three major climate zones on Earth.
What are the tropical zone, the temperate zone, and the polar zone?
500
A low-level cloud that forms in layers and often blocks out the sun. It usually produces light to heavy rain.
What is a nimbostratus cloud?
500
A large body of air where temperature and moisture content are constant throughout.
What is an air mass?
500
The layer of the atmosphere that has the highest temperatures.
What is the thermosphere?
500
The change of state from a gas to a liquid.
What is condensation?
500
How do humans contribute to the Greenhouse Effect?
What is by burning fossil fuels and deforestation?