Teacher Clich Through- Composition of Air

What is air?

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After entering your name, select Earth's atmosphere.

Air is the invisible mixture of gases that make up Earth's atmosphere.

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Select any of the models that represent the different air molecules.

Select the model that represents a nitrogen gas molecule.Each nitrogen molecule is made from two nitrogen atoms bonded together.

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Excellent! You found the nitrogen molecule!

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Nitrogen makes up about 78% of the air, but plants and animals can’t use it directly. Bacteria and human processes change it into forms they can use.

Select one of the nitrogen gas molecules.

Select the model that represents an oxygen gas molecule.Each oxygen gas molecule is made from two oxygen atoms bonded together.

Well done! You found the oxygen molecule!

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Oxygen makes up about 21% of the air and is needed for animals and humans to breathe. Plants and phytoplankton make oxygen through photosynthesis.

Select one of the oxygen gas molecules.

Select the model of an argon atom. Argon is a noble gas made up of individual atoms that don’t bond easily with other elements.

Wonderful! You found the argon atom!

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Argon makes up 0.93% of the atmosphere.It's an inert, stable gas commonly used in light bulbs and welding.

Select the argon atom.

Select the model that represents a carbon dioxide gas molecule.Each carbon dioxide gas molecule is made from one carbon atom and two oxygen atoms bonded together.

Fantastic! You found the carbon dioxide molecule!

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Carbon dioxide makes up only 0.04% of the atmosphere,but it's vital for photosynthesis and helps trap heat to keep Earth warm.

Select the carbon dioxide gas molecule.

Studying the composition of the atmosphere (air) is a perfect time to use a pie chart!Pie charts are useful when comparing parts of a whole.

The Composition of Air

Argon Gas (Ar) 0.93%

Nitrogen Gas (N2) 78.08%

All Other Gases 0.04%

Oxygen Gas (O2) 20.95%

Select the label that corresponds to the most abundant gas in air.

You got it! Nitrogen is the most abundant gas in our atmosphere.

The Composition of Air

Argon Gas (Ar) 0.93%

Nitrogen Gas (N2) 78.08%

All Other Gases 0.04%

Oxygen Gas (O2) 20.95%

Now, select the label that corresponds to the second most abundant gas in air.

Right again! Oxygen is the second most abundant gas in our air.

The Composition of Air

Argon Gas (Ar) 0.93%

Nitrogen Gas (N2) 78.08%

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Oxygen Gas (O2) 20.95%

All Other Gases 0.04%

Next, select the third most abundant gas in our atmosphere.

That's right!Even though argon makes up less than 1% of the air, it’s still the third most common gas.

The Composition of Air

Nitrogen Gas (N2) 78.08%

Oxygen Gas (O2) 20.95%

All Other Gases 0.04%

Argon Gas (Ar) 0.93%

Lastly, select the category that includes all the other gases.

Well done! Trace gases like carbon dioxide, methane, and ozone make up just 0.04% of the atmosphere but have a big impact on climate and life.

The Composition of Air

Nitrogen Gas (N2) 78.08%

Begin Review Challenge

Oxygen Gas (O2) 20.95%

Argon Gas (Ar) 0.93%

All Other Gases 0.04%

Now that the pie chart is complete, let's review what you've learned about the composition of our atmosphere.

The Composition of Air

Nitrogen Gas (N2) 78.08%

Oxygen Gas (O2) 20.95%

Argon Gas (Ar) 0.93%

All Other Gases 0.04%

Complete the challenge to receive the code.

Select here when you know the code.

Student Name Here

Wonderful work learning about the gas molecules that make up our air! If your teacher requests, screenshot this page for credit.

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