Science 6 Reviewer 2 - 3rd Quarter

What force occurs when one object rubs against another object?

• Bouyant

• Friction

• Gravity

• Magnetic

Which surface provides LEAST friction?

• Tiled floor

• Grass land

• Sandy road

• Wood floor

How are we going to stop a moving vehicle?

• Release the brake pedal to increase friction.

• Look at the brake pedal to increase friction.

• Press the brake pedal to increase friction.

• Do nothing to increase the friction.

Which bike will run faster?

• Mountain bike because it has no brake.

• Mountain bike because it is heavy and durable.

• Road bike because it has wide tire and lots of grips

• Road bike because it has light weight, small thin tires and more aerodynamic.

The gravity between two objects increases as the distance between them ___.

• decreases

• neutralizes

• increases

• stabilizes

Without air resistance, all objects fall at the same rate.

• true

• maybe

• false

• neither true or false

Which of these will have the strongest gravitational pull on Earth?

• a baby

• a half sack of rice

• a drinking glass

• an elephant

Why is it difficult for us to go up in a mountain than go down?

• We are moving against gravity.

• We are pulled by the wind.

• We are moving towards gravity.

• None of the above

Which of the following statements does NOT tell about the effects of gravitational force on objects?

• The more distant the body from the earth, the lesser is the gravitational force of attraction

• Gravitational force pushes the objects upward.

• Gravitational force is greater when the objects are closer together.

• The farther you are from earth, the lesser your weight.

When an object is at rest or not moving, the energy it possess is________.

• Chemical energy

• Kinetic energy

• Potential energy

• Thermal energy