3rd Quarter Review in Science

Which of the following statements about friction is TRUE?

• Friction opposes motion of objects.

• Friction occurs between non-rubbing surfaces.

• Friction causes moving objects to move faster.

• Friction acts in a direction similar to the direction of an object’s motion.

Which of the following situations shows that friction is increased?

• Anna uses rubber shoes while jogging.

• Ruben puts rollers on heavy cabinets.

• Naldo puts grease on his bicycle gears.

• Belle puts floor wax to make the floor smooth.

Which of the following forces causes objects to slowdown and eventually

                stop?

• air resistance

• friction

• gravity

• magnetic

Which of the following statements describe friction?

• It slows down motion.

• It does not oppose motion.

• It pulls objects downward.

• It moves along with the object.

Which force causes a rolling ball to stop after a few seconds?

• friction

• gravity

• magnetic

• motion

Which of the following can friction do to a glass of water on a table?

• It moves the glass.

• It allows the glass to slide.

• It does not affect the glass.

• It prevents from sliding. 

In which of the following situations would friction most likely pose a

                problem?

• holding a pen to write

• striking a match to cook

• walking on a slippery floor

• rubbing your hands to warm them

Which force is present when two objects rub against each other?

• friction

• gravity

• magnetic

• motion

What is the direction of friction between a moving object and a surface?

• Toward the direction of object’s motion

• Similar to the direction of object’s motion

• Opposite to the direction of object’s motion

• Perpendicular to the direction of object’s motion

Which is NOT a way of reducing friction?

• applying lubricant

• making the floor smooth

• putting spikes on tires

• putting grease on bicycle gears