Air
All living things (plants, animals, and humans) need _____ to breathe.
air
Name the three states that water comes in.
solid, liquid, and gas
Name the four stages of the water cycle (in order).
evaporation, condensation, precipitation, and collection
Name the four types of clouds.
cumulous, cirrus, stratus, and nimbus
What two things to all living things need to survive?
air and water
Animals and humans breathe in _____ and breathe out _____.
oxygen; carbon dioxide
What is water called when it is a gas?
water vapour (steam)
What stage is it when water droplets join together to form clouds?
condensation
What type of cloud is thin and wispy, made of ice crystals, and high in the sky?
cirrus
Name one thing that pollutes the air.
cars, factories
Plants take in _____ and give off _____.
carbon dioxide; oxygen
Give two examples of solid water.
ice, snow, hail
What stage is it when rain, snow, and hail join together on Earth in the lakes, rivers, and oceans?
collection
What type of cloud is fluffy and white, low in the sky, and brings nice weather?
cumulus
Name two things that pollute our water.
factories, salt, fertilizer, construction, acid rain, litter, etc.
Moving air is called _____.
wind
At what temperature does liquid water freeze and become a solid?
0 oC
What stage is it when the water heated by the sun turns into water vapour and starts rising in the air?
evaporation
nimbus
Name one thing you can do to help keep our air clean.
- walk
- ride a bike
- take the bus
Name two ways that people use wind.
spreading seeds, flying a kite, clouds, flags, sailboats, windmill, etc.
At what temperature does liquid water evaporate and become a gas?
100 oC
What stage is it when the clouds get too heavy and let all the water out as rain, snow, or hail?
precipitation
stratus
Name two things you can do to help save water.
- turn off the tap when not using it
- full dishwasher and washing machine
- collect and use rainwater (for plants, car washing, etc.)