Grade 2 · Science · Unit 11 of 12
Air & Water for Life
Properties, states and using wisely
What your child practises
Air takes up space, the three states of water, why all living things need clean air and water, and how people can protect and share water.
Ontario Curriculum expectation: E1.1, E1.3, E2.1, E2.4, E2.5 · properties of air and water, states of water, how living things depend on them, and using clean water wisely
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
When ice melts it turns from a solid to a…
- rock
- liquid
- gas
Show answer
liquid
Hint: Melting changes ice back into liquid water.
Question 2
Why do we need to keep rivers and lakes clean?
- To keep fish out
- People, plants and animals need clean water
- To make it freeze
Show answer
People, plants and animals need clean water
Hint: Pollution in water can harm every living thing that uses it.
Question 3
What happens to puddle water on a hot day?
- It evaporates into the air
- It moves to the Moon
- It turns to stone
Show answer
It evaporates into the air
Hint: Heat turns liquid water into water vapour.
Question 4
Which one is true about air?
🎈- It is a solid
- It takes up space
- It has no effect on anything
Show answer
It takes up space
Hint: A balloon fills up and gets bigger because air takes up space.
Question 5
Frost on a window is water in the form of…
- air
- ice
- gas
Show answer
ice
Hint: Cold air can freeze water into ice.
Question 6
A balloon is blown up. What does the balloon show?
🎈- Air takes up space
- Air is a liquid
- Air has no weight and no space
Show answer
Air takes up space
Hint: The balloon gets bigger because air fills it.