Friction by Bill Nye

Gravity makes your feet stick to the floor.

• True

• False

Tags

NGSS.MS-PS2-4

Friction makes it difficult to move a heavy object over a flat surface.

• True

• False

Tags

NGSS.MS-PS2-2

The force of gravity works in a direction that is horizontal to the Earth’s surface

• True

• False

Friction can change work into heat.

• True

• False

Tags

NGSS.HS-PS3-4

The friction between our fingerprints and other objects allows us to pick up those objects.

• True

• False

Ice skates create friction on ice.

• True

• False

Friction between the air and a spacecraft can burn away parts of the spacecraft’s heat shield.

• True

• False

Tags

NGSS.MS-PS3-3

Which of the following statements regarding friction is correct?

• There is less friction between the floor and a rolling bowling ball than there is between the floor and a sliding bowling ball.

• There is less friction between the floor and a square bowling ball than there is between the floor and a round bowling ball.

• A square bowling ball will travel the same distance as a round bowling ball if the force exerted on each is the same.

• There is no friction between the smooth bowling ball and the smooth floor.

Which of the following statements correctly describes the role that friction plays in the motion of a train?

• Friction is necessary to make a train stop.

• Friction is necessary for traction as the train starts moving.

• Friction is necessary to keep the train on the track as it is moving.

• All of the above.

Which of the following is a correct statement regarding the mucous that slugs make?

• Slugs cover themselves in mucous.

• Slugs use mucous to attach themselves to other surfaces.

• Mucous reduces the friction between the slug and other surfaces.

• All of the above.