Grade 3 Science practice sheet
Saskatchewan Curriculum · from Gradelings · Name: ______________________
Question 1
Plants take in nutrients from the…
🪴- wind
- clouds
- soil
- moonlight
Show answer
soil
Hint: Nutrients are like vitamins for plants. They are in the soil.
Question 2
Put the life cycle of a bean plant in order. Tap the first stage first.
- 🌱seed sprouts
- 🌿seedling with leaves
- 🌼plant with flowers
- 🫘pods with new seeds
- 🌰seed
Show answer
seed → seed sprouts → seedling with leaves → plant with flowers → pods with new seeds
Hint: A seed sprouts into a seedling, grows leaves, flowers, and makes new seeds.
Question 3
A bridge has a flat surface on top. Why?
🌉- to look like a mountain
- so it can float
- to hold water
- so people and vehicles can cross
Show answer
so people and vehicles can cross
Hint: The bridge's job is to carry traffic across a gap.
Question 4
Heavy snow piles on a flat roof. What could the force of the snow do?
❄️- make it hotter
- make it lighter
- bend or break the roof
- make it taller
Show answer
bend or break the roof
Hint: A large load can change the shape of a structure.
Question 5
Two magnets push each other apart without touching. This shows a…
🧲- friction
- contact force
- non-contact force
- twisting force
Show answer
non-contact force
Hint: The magnets act from a distance.
Question 6
A soil sample is shaken in water and left to sit. What settles first?
🫙- the water
- the humus only
- the smallest grains
- the biggest grains
Show answer
the biggest grains
Hint: Big grains are heavy and sink fast.
Question 7
Put the steps of making compost in order.
- 🪣Pile them with leaves in a bin
- 🥕Collect fruit and vegetable scraps
- 🌻Spread it on the garden
- 🟤Rich dark compost is ready
- 🪱Worms and tiny living things break them down
Show answer
Collect fruit and vegetable scraps → Pile them with leaves in a bin → Worms and tiny living things break them down → Rich dark compost is ready → Spread it on the garden
Hint: Collect scraps, pile them up, let them rot, then use the rich compost on soil.
Question 8
Which part of a plant holds it up and carries water to the leaves?
🌿- the stem
- the seed
- the roots
- the flower
Show answer
the stem
Hint: The stem is like a straw with a frame around it. It holds the plant up and carries water.
Question 9
Chlorophyll gives leaves their green colour. What else does it do?
🍃- pulls water up from the roots
- helps the leaf capture sunlight
- makes the leaf smell sweet
- stops the leaf from falling
Show answer
helps the leaf capture sunlight
Hint: Chlorophyll catches sunlight so the plant can make food.
Question 10
Who built it? Tap an item, then tap its basket.
Sort into: 🐾 built by animals · 👷 built by people
- 🌉bridge
- 🏠house
- 🕸️spider web
- 🦫beaver dam
- ⛺tent
- 🐝wasp nest
Show answer
🐾 built by animals: spider web, beaver dam, wasp nest · 👷 built by people: bridge, house, tent
Hint: Animals build nests, dams and webs. People build bridges, towers and houses.
Answer key
- 1. soil (Plant Parts & Needs)
- 2. seed → seed sprouts → seedling with leaves → plant with flowers → pods with new seeds (How Plants Grow & Change)
- 3. so people and vehicles can cross (Structures & Their Jobs)
- 4. bend or break the roof (Strong & Stable)
- 5. non-contact force (Pushes, Pulls & Forces)
- 6. the biggest grains (Types of Soil)
- 7. Collect fruit and vegetable scraps → Pile them with leaves in a bin → Worms and tiny living things break them down → Rich dark compost is ready → Spread it on the garden (Soil and Living Things)
- 8. the stem (Plant Parts & Needs)
- 9. helps the leaf capture sunlight (How Plants Grow & Change)
- 10. 🐾 built by animals: spider web, beaver dam, wasp nest · 👷 built by people: bridge, house, tent (Structures & Their Jobs)
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.