Forces and Motion Review

What is force?

• A. The creation of energy
• B. The transfer of energy
• C. A push or a pull on one object
• D. The result of a physical change

What do you call a force that results when two objects physically touch each other?

• A. Touching force
• B. Contact force
• C. Interacting force
• D. Tapping force

The force of friction exerted by a surface depends on

• A. The color of the surface
• B. The temperature of the surface
• C. The hardness of the surface
• D. The smoothness of the surface

What force is responsible for keeping Earth in orbit around the sun?

• A. Applied Force
• B. Electric Force
• C. Magnetic Force
• D. Gravity

What is magnetic force?

• A. A contact force between two metals
• B. A contact force between magnetic objects
• C. A non-contact force between two metals
• D. An invisible force between magnetic objects

“_________ force is an invisible force created by electrically charged objects. The area of this force around electrically charged objects is called_________ field.”

• A. Electric, magnetic
• B. Electric, electric
• C. Magnetic, electric
• D. Magnetic, magnetic

What happens the motion of an object when unbalanced forces act on that object?

• A. The object does not move
• B. Only object’s speed of motion will change
• C. Only the object’s direction of motion will change
• D. The object speed and/or direction of motion may change

What three things are important to describing the motion of an object?

• A. Position, force and direction
• B. Position, direction and speed
• C. Speed, force and friction
• D. Speed, direction and friction

Applied Force

• Contact Force
• Noncontact Force

Electric Force

• Contact Force
• Noncontact Force