Contact forces | Science | Quizalize & Oak National Academy

Starter quiz

Which of these pictures shows a squash?
- squeezing blu-tack between finger and thumb ✓
- pulling blu-tack between two hands
- twisting the blu-tack between two hands
A ______ force happens when two surfaces move over each other.
- 'Friction' ✓
What do friction forces do to moving objects?
- speed them up
- slow them down ✓
- change their colour
- change their weight
Which material can you squash?
- dough ✓
- wood
- brick
How would you make this light switch work?
- push it ✓
- pull it
- twist it
Are friction forces helpful or unhelpful for these activities? Match the word to the activity.
- unhelpful
  
  ⇔
  
  travelling down a slide fast ✓
- helpful
  
  ⇔
  
  running along a running track ✓