Friction 2
Science: KS3, topic 3.2.13
Friction and Air Resistance
Friction is the force made when two surfaces rub together. Friction opposes motion and often causes heating.
Friction
- Friction opposes motion and often causes heating.
- Separating two surfaces with a thin layer of oil can reduce friction.
- The oil layer allows the surfaces to move more freely across each other.
Fidget spinners
- Fidget spinners reduce friction as much as possible to let them spin for longer.
Air resistance
- Air resistance is a frictional force.
- Air resistance opposes an object's motion.
Test yourself on Friction 2
What does friction often cause between two surfaces?
Which of these statements is true?
What would not help reduce the friction between two surfaces?