Friction and its Effects Quiz

What is friction?

• Friction is the force that opposes the motion of an object when it comes into contact with another object.

• Friction is the force that has no effect on the motion of an object

• Friction is the force that helps the motion of an object

• Friction is the force that increases the speed of an object

What are the different types of friction?

• Hard friction, soft friction, solid friction, and liquid friction

• Static friction, kinetic friction, rolling friction, and fluid friction

• Fast friction, slow friction, medium friction, and high friction

• Smooth friction, rough friction, bumpy friction, and sticky friction

How does friction affect motion?

• Friction opposes the motion of an object

• Friction increases the speed of an object

• Friction has no effect on motion

• Friction causes the object to move in the same direction

What are the factors that affect friction?

• Sound of the surfaces, flexibility of the surfaces, height of the surfaces

• Nature of the surfaces, force pressing the surfaces together, smoothness of the surfaces

• Weight of the surfaces, taste of the surfaces, age of the surfaces

• Color of the surfaces, temperature, smell of the surfaces

What is static friction?

• The force that attracts objects to each other

• The force that resists the initial motion of an object at rest.

• The force that accelerates an object in motion

• The force that causes an object to float in water

What is kinetic friction?

• The force that attracts two objects towards each other

• The force that keeps an object at rest

• The force that causes an object to move in a circular path

• The force that opposes the relative motion of two surfaces in contact when they are sliding against each other.

How does friction help in walking?

• Friction has no effect on walking

• Friction makes walking more difficult

• Friction provides grip and prevents slipping

• Friction reduces the grip and causes slipping

How does friction cause wear and tear?

• Friction reduces the temperature

• Friction generates heat and abrasion

• Friction has no effect on wear and tear

• Friction creates a protective layer

What are the advantages of friction?

• Reduces control of vehicles

• Makes movement difficult

• Causes accidents

• Provides grip, enables walking, allows use of brakes, enables writing with pen or pencil

How can friction be reduced?

• Applying more pressure on the surfaces

• Using lubricants or smooth surfaces

• Increasing the roughness of the surfaces

• Using magnets to repel the surfaces