Gap Filling Quiz

Fill in all the gaps by choosing the correct answer from the dropdown menu
Each word is to be selected only once
Then press the Check button to see your result
Friction is a that tries to prevent objects from passing smoothly over each other.
It occurs where two objects are in .
Friction can prevent a car engine from moving .
It can also cause the moving parts to up. That's why cars use such as oil, to help keep the parts moving freely.
To reduce friction, wheels are often mounted on ball , or oil is used to make moving parts more .
Friction can also be quite . It allows shoes and tyres to the ground.
It is also useful in systems of cars and other forms of transport.