The Basics
Air
Atmosphere
Wonder of Water
Hydrosphere
100

The smallest chemical unit of matter

What is an atom?

100

The amount of moisture in the air

What is humidity?

100

The mass of air surrounding a planet

What is atmosphere?

100

A substance that is dissolved

What is a solute?

100

A dense, icy pack of old snow

What is a firn?

200

The number of centimeters in 1.3 meters

What is 130cm?

200

This gas makes up the majority of the air we breathe

What is nitrogen?

200

This phenomenon occurs in the thermosphere

What are auroras?

200

The phenomenon that occurs when water molecules move around but still stay close together as they move

What is cohesion?
200

The largest source of liquid freshwater on the planet

What is groundwater?

300

Grams are one measurement for this

What is mass?

300

An increase in this gas will cause fires to burn longer

What is oxygen?

300

These regions of the atmosphere are in the homosphere

What are the troposphere, stratosphere, and mesosphere?

300

The chemical formula for carbon dioxide

What is CO2?

300

The two hydrologic cycle processes that happened to move water from the ocean to a cloud

What are evaporation and condensation?

400

The bluish-green substance resulting when copper atoms link with oxygen, carbon, and hydrogen atoms

What is copper hydroxycarbonate?

400

This gas was decreased by the use of catalytic converters

What is carbon monoxide?

400

The change from a solid to liquid to gas is caused by this

What is energy? (or What is heat?)

400

The reason that water is a liquid at room temperature when all similar substances are gasses

What are hydrogen bonds?

400

This type of water pollution is the hardest to tract back to its source

What is groundwater pollution?

500

The reason that baking bread and thereby creating poisonous ozone gas is not dangerous

What is concentration?

500

The reason that a glass of water outside will not evaporate

What is relative humidity of 100 percent?

500

CFCs are pushed into the ozone layer by this

What is the polar vortex?

500

The reason that a substance will dissolve in water but not in oil

What is polarity?

500

The pipes that carry the expanded gas are located here on a refrigerator

What is the inside?