Wheels and ramps
6 free practice questions with explanations
PassNova has 6 free Kids Forces & Magnets practice questions on Wheels and ramps, each with a clear explanation. Practise them in the browser with instant feedback — 100% free, no sign-up, on any device. Updated for 2026.
Wheels and ramps: example questions & answers
6 worked examples with answers and explanations below. Practise them in the browser with instant feedback on every answer.
Why do bikes, cars, and trolleys have wheels?
- ATo help them roll along easily✓
- BTo help them float
- CTo make them look pretty
- DTo keep them warm
Answer: Wheels roll, making it much easier to move things than dragging them.
A ramp is a flat surface that is what, to help move things up or down?
- ABumpy and jagged
- BSloped or tilted✓
- CMade of water
- DPerfectly flat
Answer: A ramp is a gentle slope that makes it easier to move things up or down.
Is it easier to push a heavy box up a gentle ramp or lift it straight up high?
- ANeither can be done
- BPush it up the ramp✓
- CLift it straight up
- DThey feel exactly the same
Answer: A ramp spreads out the effort, so pushing up a slope is easier than lifting.
A round wheel turns around a central rod. What is that rod called?
- AA magnet
- BA spring
- CAn axle✓
- DA ramp
Answer: The axle is the rod in the middle that a wheel spins around.
Which shape rolls smoothly and makes a good wheel?
- AA circle✓
- BA square
- CA triangle
- DA star
Answer: Round wheels roll smoothly, while a square or triangle would just bump along.
A slide in a playground works a bit like which simple machine?
- AA spring
- BA magnet
- CA wheel
- DA ramp✓
Answer: A slide is a smooth, sloped ramp that lets you glide down easily.