The Air Around You
Air Quality
Air Pressure
Layers of the Atmosphere
I'm Feeling Lucky
100
About 99% of earth's atmosphere is made up of these two gases.
What are nitrogen and oxygen?
100
Harmful substances in the air or water.
What are pollutants?
100
This term refers to your elevation above sea level.
What is altitude?
100
The layer of the atmosphere we are in right now.
What is the troposphere?
100
Rain, snow and storms are only found in this layer of the atmosphere.
What is the troposphere?
200
Water exists in the atmosphere in the form of this invisible gas.
What is water vapor?
200
This type of pollution happens when coal containing a lot of sulfur and nitrogen is burned.
What is acid rain?
200
To measure air pressure, you'll need one of these.
What is a barometer?
200
Strangely, this coldest part of the atmosphere is usually where meteors (or shooting stars) usually burn up.
What is the mesosphere?
200
Ozone is actually a special form of this gas whose molecules contain three atoms instead of two.
What is oxygen?
300
This noble gas with an atomic number of 18 is the third most common gas in earth's atmosphere.
What is argon?
300
This type of air pollution happens when pollutants from car exhaust react with sunlight to form ozone in the troposphere.
What is photochemical smog?
300
Air pressure is the weight of this thing pushing down on you.
What is the atmosphere?
300
This highest level of the atmosphere is also the hottest. In fact, its name even means "heat".
What is the thermosphere?
300
The first barometers to be invented were made with this silver-colored liquid metal.
What is mercury?
400
This compound of oxygen and carbon formed from the burning of fossil fuels is thought to contribute to global warming.
What is carbon dioxide?
400
This substance made of tiny particles of carbon is what gives smoke its dark color.
What is soot?
400
A measurement of how tightly air molecules are packed together.
What is density?
400
The ozone layer is found near the top of this layer of the atmosphere.
What is the stratosphere?
400
The satellites that provide signals for cell phones, televisions and GPS units orbit the earth in this outer part of the thermosphere.
What is the exosphere?
500
Most of the oxygen in earth's atmosphere comes as a result of this "green" process.
What is photosynthesis?
500
Millions of people worldwide suffer from this allergy to plant pollen.
What is hay fever?
500
This unit, along with inches of mercury, is one of the two most common units for measuring air pressure.
What are millibars?
500
The atmosphere is divided into four layers based on changes in this.
What is temperature?
500
Glowing gases form the northern lights in this lower part of the earth's thermosphere.
What is the ionosphere?
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