Free Printable Ch. 4 Review: Work & Energy

1.

energy is the energy an object has because of its motion.

a)

Kinetic

b)

Potenial

c)

Chemical

d)

Magnetic

2.

Rubber bands contain .

a)

gravitational potential energy

b)

chemical potential energy

c)

elastic potential energy

d)

thermal energy

3.

energy is stored energy due to position.

a)

Kinetic

b)

Potential

c)

Chemical

d)

Magnetic

4.

Energy stored in chemical bonds is called .

a)

elastic potential energy

b)

chemical potential energy

c)

kinetic energy

d)

none of these

5.

Anything that can fall to earth has stored energy called .

a)

elastic potential energy

b)

elastic potential energy

c)

kinetic energy

d)

gravitational potential energy

6.

The unit of power is the .

a)

joule

b)

MA

c)

watt

d)

second

7.

Which of the following is not used to calculate potential energy?

a)

mass

b)

gravitational acceleration

c)

height

d)

speed

8.

Work and energy are both measured in .

a)

joules

b)

N

c)

ºC

d)

j/kg

9.

The kinetic energy of an object increases as its increases.

a)

height above Earth

b)

speed

c)

potential energy

d)

volume

10.

Which of the following groups of simple machines represent variations of an inclined plane?

a)

pulley, lever, and wedge

b)

pulley, wheel and axle

c)

screw, wedge

d)

wheel and axle, screw

11.

Total amount of kinetic and potential energy

in a system

a)

Work

b)

Law of conservation of energy

c)

Mechanical energy

d)

Joule

12.

The ability to cause change

a)

Elastic potential energy

b)

Efficiency

c)

Simple machine

d)

Energy

13.

Energy stored by compressing or stretching objects

a)

Chemical potential energy

b)

Elastic potential energy

c)

Mechanical energy

d)

Gravitational potential energy

14.

Energy in the form of motion

a)

Kinetic energy

b)

Efficiency

c)

Elastic potential energy

d)

Law of conservation of energy

15.

Energy cannot be created or destroyed

a)

Law of conservation of energy

b)

Mechanical energy

c)

Elastic potential energy

d)

Kinetic energy

16.

Does work with only one movement of the machine

a)

Work

b)

Efficiency

c)

Joule

d)

Simple machine

17.

Energy stored in chemical bonds

a)

Elastic potential energy

b)

Gravitational potential energy

c)

Chemical potential energy

d)

Law of conservation of energy

18.

Ratio of output work to input work

a)

Efficiency

b)

Joule

c)

Mechanical energy

d)

Energy

19.

Energy stored by things that are above earth

a)

Mechanical energy

b)

Gravitational potential energy

c)

Elastic potential energy

d)

Chemical potential energy

20.

SI unit of energy

a)

Energy

b)

Work

c)

Efficiency

d)

Joule

21.

Force applied through a distance

a)

Work

b)

Efficiency

c)

Joule

d)

Mechanical Advantage

22.

Use the equation to calculate the kinetic energy (J) of a 100 kg cart moving at a speed of 7 m/s

$KE=½mv^2$

(a)

23.

Calculate the gravitational potential energy (J) of a 10-kg sack of groceries on a shelf 1 m above the floor?

$GPE=mgh$

g=9.8\ \frac{m}{s}

(a)

24.

A box is pushed 50 m by a mover. The amount of work done was 2,250 J. How much force (N) was exerted on the box?

$F=\frac{W}{d}$

(a)

25.

A carpenter uses a crowbar to remove the top of a box. The top has a resistance of 500 N. The carpenter applies an input force of 200 N. What is the mechanical advantage of the crowbar?

$MA=\frac{F_{output}}{F_{input}}$

(a)

Ch. 4 Review: Work & Energy

Total questions: 25

Worksheet time: 15mins

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