What Is Air?
Plants use this in air to make food.
What is carbon dioxide?
These clouds are low-level, form in layers and usually bring steady rain.
What are stratus?
This is any form of water that falls from clouds to Earth's surface.
What is precipitation?
Precipitation is any form of this that falls from clouds to Earth.
What is water?
This is how hot or cold the air is.
What is temperature?
Animals use this to get energy from food.
What is oxygen?
These clouds are fluffy, form low in the sky and usually mean fair weather.
What are cumulus?
The heat from the Sun causes the water from oceans, lakes, and rivers to do this.
What is evaporate?
This happens when drops of water in clouds fall through air that is above freezing.
What is rain?
This is how much water vapor is in the air.
What is humidity?
Plants release this when they make food.
What is oxygen?
These clouds are thin and feathery, form high in the sky and indicate fair weather.
What are cirrus?
As water vapor rises in the air, it cools and does this to become water droplets.
What is condenses?
This forms when drops of rain freeze and strong winds carry them higher into a cloud.
What is hail?
This is the weight of air as it presses down on Earth's surface.
What is air pressure?
What is carbon dioxide?
These clouds bring thunderstorms.
What are cumulonimbus?
These are formed as water vapor rises, cools and condenses into water droplets.
What are clouds?
This is rain that freezes as it falls.
What is sleet?
This is the movement of air.
What is wind?
Plants absorb nitrogen through their roots. They use nitrogen to do this.
What is grow?
Clouds form when water vapor in the air does this.
What is condenses?
The water cycle does this to the Earth's water supply. For example, salt and other materials in the ocean are left behind when ocean water evaporates.
What is cleans?
This falls when the temperature in a cloud is below freezing.
What is snow?
Mt. Washington in New Hampshire is nicknamed this because scientists there record weather conditions and conduct important research.
What is Home of the World's Worst Weather?