Grade 4 Science practice sheet
Alberta Curriculum · from Gradelings · Name: ______________________
Question 1
Which way of cutting down waste is best for a lunch?
🥪- use a reusable container
- wrap each item twice
- throw out half the lunch
- use a new plastic bag each day
Show answer
use a reusable container
Hint: Reusable containers make less garbage.
Question 2
A magnet picks up a paper clip from 1 cm away but not from 30 cm away. Why?
📏- the force gets weaker as the distance grows
- the magnet turned off
- the paper clip got heavier
- gravity stopped
Show answer
the force gets weaker as the distance grows
Hint: Non-contact forces act less as objects get farther apart.
Question 3
Which gas in the atmosphere do we need to breathe?
🫁- gravel
- salt
- oxygen
- rock
Show answer
oxygen
Hint: Oxygen is part of the air.
Question 4
If a river is dammed, what might change downstream?
🌊- nothing at all
- only the colour of the sky
- the Moon's orbit
- the water flow and the animals that live there
Show answer
the water flow and the animals that live there
Hint: Changes to water systems affect other systems, like living things.
Question 5
The school bell rings. Put the steps of your response in order.
- ⚡Nerves carry a message to your brain
- 👂Your ears sense the sound
- 🧠Your brain decides what to do
- 🏃Your muscles move you to line up
Show answer
Your ears sense the sound → Nerves carry a message to your brain → Your brain decides what to do → Your muscles move you to line up
Hint: Your senses notice first. Nerves carry the message to your brain, your brain decides, then your muscles move.
Question 6
Which of these is a constellation?
✨- Earth
- the Moon
- Orion
- Venus
Show answer
Orion
Hint: A constellation is a pattern of stars. Orion is easy to spot in winter evenings.
Question 7
A sensor turns on a light when it gets dark. Which sequence describes the algorithm?
💡- if it is bright, turn the light off and on
- ignore the sensor
- if it is dark, turn the light on
- turn the light on forever
Show answer
if it is dark, turn the light on
Hint: An 'if' step checks a condition.
Question 8
Why is one measurement not always enough?
🔬- it could be a mistake, so repeating helps
- measuring is not allowed
- scientists never repeat
- numbers cannot be trusted at all
Show answer
it could be a mistake, so repeating helps
Hint: Repeating checks that results are consistent.
Question 9
What is recycling?
♻️- burying things in a yard
- making old materials into new products
- burning things in a campfire
- throwing things in the lake
Show answer
making old materials into new products
Hint: Recycling saves materials and energy.
Question 10
As two objects move farther apart, what happens to the pull of gravity or of a magnet between them?
🌍- it turns into a push
- it gets stronger
- it stays exactly the same
- it gets weaker
Show answer
it gets weaker
Hint: Non-contact forces act less as objects get farther apart.
Answer key
- 1. use a reusable container (Waste & Dangerous Materials)
- 2. the force gets weaker as the distance grows (Gravity & Magnets)
- 3. oxygen (Earth's Systems)
- 4. the water flow and the animals that live there (Resources & Conservation)
- 5. Your ears sense the sound → Nerves carry a message to your brain → Your brain decides what to do → Your muscles move you to line up (Sense & Respond)
- 6. Orion (Space & the Sky)
- 7. if it is dark, turn the light on (Design & Computational Thinking)
- 8. it could be a mistake, so repeating helps (Evidence & Data)
- 9. making old materials into new products (Waste & Dangerous Materials)
- 10. it gets weaker (Gravity & Magnets)
Want more than 10 questions?
In Gradelings the questions change every time and adjust to your child, with hints and kind feedback. See all science units.