TRUE or FALSE? Wind always moves from land to sea.
FALSE
Sound cannot travel through _________.
space
TRUE or FALSE? The hot air rises up.
TRUE
Human and animals need air to ........
breathe
Vibrating objects make ..........
sound
TRUE or FALSE? Plants don't need air to stay alive.
FALSE
Air is essential for ________ .
living things or burning
TRUE or FALSE? Music can travel through the air.
TRUE
name 2 main gases in the air
nitrogen and oxygen
TRUE or FALSE? Sound cannot travel through water.
FALSE
What is the percentage of oxygen in the air?
21%
TRUE or FALSE? Fire doesn't need air to burn.
FALSE
Sound can travel through.............
liquid
TRUE or FALSE? 1% of air is carbon dioxide
FALSE
2 gases in the air beside nitrogen and oxygen
carbon dioxide and water vapor
TRUE or FALSE? Wind turbines generate electricity from wind energy.
TRUE
name 4 gases in the air
nitrogen, oxygen, carbon dioxide, water vapor
What is the percentage of nitrogen in the air?
78%
Wind is the _________ of air.
movement
Name 2 things that can make sound
horn, bell, piano, guitar, speaker, a human, an animal...
Three mediums that sound can travel through
gas, solid, liquid
TRUE or FALSE? Plants don't need air to stay alive.
FALSE
Name 2 things need air to stay alive
a tree, a dog, a cat, a baby, the fire...
Air movement causes ..........
wind