Grade 5 · Science · Unit 2 of 7

Forces, Friction and Machines

Pushes, pulls and rubbing surfaces

What your child practises

Forces as pushes, pulls and twists, how friction affects motion, and how friction makes simple machines less efficient.

New Brunswick Curriculum skill descriptor: Scientific Literacy: Sensemaking · forces, friction and machines

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

Question 1
A ramp is also called an…
- pulley
- axle
- inclined plane
Question 2
A hockey puck slides far on ice because…
- there is little friction
- gravity is off
- there is a lot of friction
Question 3
A heavy box is hard to slide across a carpet because of…
- magnetism
- friction
- light
Question 4
Simple machines make work…
- easier by changing a force's size or direction
- impossible
- heavier
Question 5
A force can make an object…
- start moving, stop or change direction
- disappear
- only get lighter
Question 6
Which is a benefit of friction?
- brakes stopping a bike
- a drawer sticking
- a machine heating up and wearing out