Friction Quiz

What is frictional force?

• A force that attracts objects

• A force that lifts objects

• A force that opposes movement

• A force that pushes objects

In which direction does friction act?

• Downwards

• Upwards

• Opposite direction to movement

• Same direction as movement

What is static friction?

• Friction between two surfaces rolling

• Friction between two surfaces sliding

• Friction between two surfaces at rest

• Friction between two surfaces in motion

What is sliding/kinetic friction?

• Friction between two surfaces in motion

• Friction between two surfaces at rest

• Friction between two surfaces sliding

• Friction between two surfaces rolling

What is rolling friction?

• Friction between two surfaces in motion

• Friction between two surfaces at rest

• Friction when an object rolls on its surface

• Friction between two surfaces sliding

What is fluid friction?

• Friction between layers of fluid when moving relative to each other

• Friction between two surfaces in motion

• Friction when an object rolls on its surface

• Friction between two surfaces sliding

What is the effect of friction on moving objects?

• Increases speed

• Reduces speed

• No effect

• Changes color

How does friction help us in daily activities like walking and running?

• By making things fly

• By providing grip and traction

• By reducing heat

• By causing loss in power

How can friction be reduced?

• By increasing pressure on the object

• By using lubricants like oil or grease

• By increasing roughness of the surface

• By adding weight to the object

What is one way to reduce friction for objects that roll?

• Using magnets

• Adding more weight to the object

• Using ball bearings

• Using sandpaper on the surface