Chapter 7

Question 1

What is the mass of approximately one liter of water?

A. 0.5 kilograms
B. 1 kilogram
C. 1.5 kilograms
D. 2 kilograms

Answer 1

B

Question 2

Will force always cause change?

A. Yes, it always causes change
B. No, it depends on the circumstances
C. Yes, but only under extreme conditions
D. No, it only causes change in certain situations

Answer 2

A

Question 3

What term describes motion in a straight line in some direction, with speed or velocity?

A. Speed
B. Velocity
C. Acceleration
D. Distance

Answer 3

B

Question 4

List the two main forms of energy.

A. Potential and Kinetic
B. Thermal and Chemical
C. Mechanical and Electrical
D. Nuclear and Radiant

Answer 4

A

Question 5

When using a lever, where is it advantageous to place the fulcrum?

A. Some distance from the end
B. As close as possible to the end
C. Exactly in the middle
D. It does not matter where the fulcrum is placed

Answer 5

A

Question 6

Define Ideal Mechanical Advantage.

A. The ratio of force input to force output
B. The ratio of distance traveled by the input force to distance traveled by the output force
C. The ratio of distance from the fulcrum to effort divided by distance from the fulcrum to load
D. The ratio of power input to power output

Answer 6

C

Question 7

Given an equation used when calculating efficiency of some device or system, what does actual mechanical advantage equal? (Ama)

A. Ideal mechanical advantage x power
B. Ideal mechanical advantage ÷ by efficiency
C. Ideal mechanical advantage x efficiency
D. Ideal mechanical advantage + efficiency

Answer 7

C