Lesson Worksheet: Friction Science

In this worksheet, we will practice describing the effects of friction on the motion and energy of objects.

Q1:

Fill in the blank: When more friction force is exerted on a moving object, more energy is .

  • Aproduced
  • Bdissipated

Q2:

Complete the sentence: Friction is a category of .

  • Amotion
  • Bforce
  • Csubstance
  • Denergy

Q3:

Complete the sentence by filling in the blank: A friction force acts the motion of the object that it acts on.

  • Ain the opposite direction to
  • Bin the same direction as
  • Cin every direction except that of
  • Dat a right angle to the direction of

Q4:

Two identical wooden blocks are pushed across two identical surfaces the same distance at the same speed. One of the surfaces has a thin layer of oil covering it. Which of the surfaces exerts less friction on the block?

  • AThe surface covered with oil
  • BThe surface not covered with oil

Q5:

A wooden block is rubbed back and forth over some sandpaper for one minute. The same block is later rubbed back and forth over some metal for one minute. The block moves at the same speed over the sandpaper and the metal. The metal produces less friction than the sandpaper. Which surface increased the thermal energy of the block more when the block was rubbed over it?

  • AMetal
  • BSandpaper

Q6:

Which of the following is not a source of friction?

  • AAn object being in motion along a rough horizontal surface
  • BAn object being at rest on a rough sloping surface
  • CAn object increasing in temperature

Q7:

Which of the following is not a source of friction?

  • AAn object decreasing in kinetic energy
  • BAn object being at rest on a rough sloping surface
  • CAn object being in motion along a rough horizontal surface

Q8:

Can a frictional force on an object sliding along a surface transfer kinetic energy to the object?

  • AYes
  • BNo

Q9:

Fill in the blank: An object moves along a rough surface. No force acts on the object in the direction that it moves in. The rougher the surface, the the distance that the object will move before it comes to rest.

  • Ashorter
  • Blonger

Q10:

Fill in the blank: It is for the only force acting on a moving object to be a frictional force.

  • Aimpossible
  • Bpossible

This lesson includes 8 additional questions for subscribers.

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