Gravity and Friction Lesson Outline

Multiple Choice

The three examples pictured are of

• Non-contact Forces

• Contact Forces

Multiple Choice

Gravity is a

• Contact Force

• Myth

• Non-contact Force

Multiple Choice

What is the difference between mass and weight?

• Mass is the amount of matter in an object, while weight is the force of gravity on an object

• Mass is the force of gravity on an object, while weight is the amount of matter in an object

• Mass and weight are the same thing

• Mass and weight are unrelated to gravity

Multiple Select

The gravitational attraction between two objects would increase if both masses are –

• increased, and the distance between them is increased.

• increased, and the distance between them is decreased.

• decreased, and the distance between them is decreased.

• decreased, and the distance between them is increased.

Multiple Select

What is the effect of distance on the pull of gravity between objects?

• The farther objects are, the weaker the pull of gravity

• The closer objects are, the stronger the pull of gravity

• The farther objects are, the stronger the pull of gravity

• The closer objects are, the weaker the pull of gravity

Multiple Choice

The direction of force of friction is always _____ to the direction of motion

• same

• opposite

• unchanged

• none of these

Multiple Choice

Rough surfaces have _________

• greater friction

• less friction

• the same level of friction

Multiple Choice

Sally experiences-

• Rolling Friction
• Sliding Friction
• Fluid Friction
• Static Friction

Multiple Choice

The force you to have to overcome to start an object moving is __________.

• rolling friction
• static friction
• sliding friction
• air resistance

Multiple Choice

The unit of force is ______.*

• grams
• liters
• newtons
• kilograms