Grade 4 Science practice sheet
Ontario Curriculum · from Gradelings · Name: ______________________
Question 1
A drought dries up a pond. What happens to the animals that live there?
🏜️- they get more food
- they grow gills
- nothing changes
- many have to move or may not survive
Show answer
many have to move or may not survive
Hint: Water is a necessity for pond life.
Question 2
Why is a food web a better picture of nature than one food chain?
🕸️- it is only for plants
- most animals eat more than one kind of food
- it has fewer animals
- it is smaller
Show answer
most animals eat more than one kind of food
Hint: Real communities have many links.
Question 3
Why do many conifers like pine and spruce have thin needles and flexible branches?
🌲- snow slides off and they lose less water
- to attract more bees
- to hide from owls
- to make seeds heavier
Show answer
snow slides off and they lose less water
Hint: Needles are waxy and branches bend without breaking.
Question 4
Which light source gives off light but very little heat?
🟢- the Sun
- a campfire
- a candle
- a glow stick
Show answer
a glow stick
Hint: A glow stick makes light with a chemical change, not by burning.
Question 5
A fire alarm uses a loud, high-pitched sound. Why?
🚨- it is quiet
- it is pretty
- it is easy to notice and warns people of danger
- it makes the fire go out
Show answer
it is easy to notice and warns people of danger
Hint: Sound is a useful warning signal.
Question 6
A can opener is a machine. Its job is to…
🥫- cut open a can
- make music
- water plants
- bake bread
Show answer
cut open a can
Hint: A machine's purpose is what it was designed to do.
Question 7
A wheel with 10 teeth drives a wheel with 30 teeth. Compared to the driver, the driven wheel turns…
⚙️- at the same speed
- three times faster
- twice as fast
- three times slower
Show answer
three times slower
Hint: It has three times as many teeth.
Question 8
Marble starts as limestone. What changes it?
🏛️- rain
- heat and pressure deep in the Earth
- wind
- a flood
Show answer
heat and pressure deep in the Earth
Hint: It becomes metamorphic rock.
Question 9
Does it come from a rock or mineral? Tap an item, then tap its basket.
Sort into: 🪨 comes from rocks and minerals · 🌿 comes from living things
- 📚a paper book
- 🛣️gravel on a road
- 🔌copper wire
- ✏️pencil lead (graphite)
- 👕a cotton shirt
- 🪑a wooden chair
Show answer
🪨 comes from rocks and minerals: gravel on a road, copper wire, pencil lead (graphite) · 🌿 comes from living things: a paper book, a cotton shirt, a wooden chair
Hint: Salt, pencil lead (graphite), copper wire, gravel and concrete come from rocks and minerals. Wool, wood and cotton come from living things.
Question 10
Does it help a habitat or harm it? Tap an item, then tap its basket.
Sort into: 💚 helps habitats · ⚠️ harms habitats
- 🌉building a wildlife crossing over a highway
- 🪺putting up bird nest boxes
- 🛢️dumping chemicals into a river
- 🌳planting native trees
- 🪓clearing a forest and leaving it bare
- 🅿️draining a wetland for a parking lot
Show answer
💚 helps habitats: building a wildlife crossing over a highway, putting up bird nest boxes, planting native trees · ⚠️ harms habitats: dumping chemicals into a river, clearing a forest and leaving it bare, draining a wetland for a parking lot
Hint: Restoring wetlands and putting up nest boxes help. Pollution and clearing habitat harm.
Answer key
- 1. many have to move or may not survive (Habitats & Communities)
- 2. most animals eat more than one kind of food (Food Chains & Webs)
- 3. snow slides off and they lose less water (Adaptations)
- 4. a glow stick (Light)
- 5. it is easy to notice and warns people of danger (Sound)
- 6. cut open a can (Machines in Our Lives)
- 7. three times slower (Gears, Levers & Motion)
- 8. heat and pressure deep in the Earth (Rocks & Minerals)
- 9. 🪨 comes from rocks and minerals: gravel on a road, copper wire, pencil lead (graphite) · 🌿 comes from living things: a paper book, a cotton shirt, a wooden chair (Fossils, Mining & Earth Processes)
- 10. 💚 helps habitats: building a wildlife crossing over a highway, putting up bird nest boxes, planting native trees · ⚠️ harms habitats: dumping chemicals into a river, clearing a forest and leaving it bare, draining a wetland for a parking lot (Habitats & Communities)
Want more than 10 questions?
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