CHAPTER 3 TEST

SIMPLE MACHINES

A.power

B.wedge

C.work

D.mechanical advantage

E.efficiency

F.screw

G.wheel and axle

H.pulley

I.inclined plane

Matching: On your answer sheet, put the correct letter in the space provided.

1. a simple machine made up of a grooved wheel with a rope or cablewrapped around it.

2. the transfer of energy to an object by a force that makes an object move in the direction of the force

3. a sloped surface that moves4. the rate at which work is done5. the ratio of the output force exerted to

the input force applied6. the ratio of the output work to the

input work7. an inclined plane wrapped around a

cylinder8. a flat, sloped surface

MULTIPLE CHOICE

FOR THE FOLLOWING PROBLEMS, PUT THE CORRECT LETTER IN THE SPACE

PROVIDED.

FOR BONUS, WRITE THE SCHOOL THEME FOR THIS YEAR UNDER YOUR NAME ON THE ANSWER

SHEET

QUESTION 9

Which distance do you measure to determine how much work was done on an object that has been moved?

A. vertical distanceB.horizontal distanceC.all distance against gravityD. distance in the direction of motion

A rake makes doing work easier by changing theA. size of the force.B. distance a force acts.C.direction of the force.D. amount of work required

QUESTION 10

Which factor always causes the output work of a machine to be less than the input work?A.gravityB.fatigueC. frictionD.distance

QUESTION 11

How is the energy of an object affected after work is done on it?A.Energy is increased.B.Energy is decreased.C.Energy remains the same.

QUESTION 12

Which machine works by changing the direction of a force?A.a rakeB.a pulleyC.a screwdriver

QUESTION 13

Which statement describes the relationship between input work and output work using a machine?A. Input work is always equal to output work.B. Input work is always less than output work.C. Input work is always greater than output work

QUESTION 14

Which two factors are used to calculate work?A.speed and timeB.force and speedC. time and distanceD.distance and force

QUESTION 15

Which option is NOT a way that machines can make work easier?A. Increase the total energy.B. Change the size of a force.C. Change the direction of a force.D. Increase the distance a force acts.

QUESTION 16

17 Simple machines are tools that make work easier.18 Simple machines have many complex parts.19 Simple machines require no energy to do work.20 Simple machines do work with one movement.21 Simple machines give us an advantage by changing the amount, speed or direction of forces.22 Simple machines require a much greater force to overcome a smaller force.

True or False. Put T (true) or F (false) in the space provided on your answer sheet

IDENTIFYING SIMPLE MACHINES

PUT THE CORRECT NAME OF THE SIMPLE MACHINE IN THE SPACE

PROVIDED

QUESTION 23

QUESTION 24

QUESTION 25

QUESTION 26

QUESTION 27

QUESTION 28

QUESTION 29

QUESTION 30

QUESTION 31NOT THE CART WITH WHEELS

QUESTION 32

QUESTION 33

QUESTION 34

QUESTION 35

QUESTION 36

QUESTION 37

QUESTION 38

QUESTION 39WHAT 2 SIMPLE MACHINES CAN BE SEEN BELOW

QUESTION 40LIST AS MANY SIMPLE MACHINES AS YOU CAN. BE SURE TO EXPLAIN WHERE EACH CAN BE FOUND ON THE BICYCLE

TURN IN YOUR ANSWER SHEET AND EXIT OUT OF THIS TEST