WorksheetsTrees: Earths Lungs
Total questions: 9
Worksheet time: 5mins
Why are trees often called the 'lungs of the Earth?'
Because they produce oxygen
Because they produce carbon dioxide
Because they produce water
Because they produce food
What do trees absorb from the air that helps clean the environment?
Oxygen
Carbon dioxide
Nitrogen
Hydrogen
Trees ' leaves have tiny holes underneath called (a)
What do trees make food from?
water only
soil and sunlight
carbon dioxide, water and sunlight
True or false: Trees use energy from the sun to make sugar.
False
True
How does oxygen leave the tree?
Through the roots
Through the trunk
Through the stomata
Through the branches
How much oxygen does a fully-grown tree make?
Enough to keep 1 ant alive.
Enough to keep 1 person alive.
Enough to keep 2 people alive.
True or False: Burning gas and coal makes too much carbon dioxide?
True
False
Why is too much carbon dioxide bad for Earth?
It keeps our Earth too cold
It keeps our Earth too warm
It keeps our earth too smelly
It keeps our Earth too snowy
