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WorksheetsWork, Power, and Simple Machines Quiz
Total questions: 35
Worksheet time: 53mins
Name
Class
Date
1.
The unit used to measure work is the
a)
Watt
b)
Newton
c)
Joule
d)
meter
2.
A force exerted over a distance to move an object is ______________________.
a)
power
b)
work
c)
momentum
d)
Watt
3.
Which of the following is the best example of work being done.
a)
doing homework
b)
lifting a box
c)
pushing a stationary box
d)
holding a box
4.
A 5000N block is lifted 10 m. How much work was done?
a)
50000 J
b)
5000 J
c)
500 J
d)
50 J
5.
Force is a _____ or _______
a)
simple complex
b)
push pull
c)
up down
d)
in out
6.
In which of these cases is work being done?
a)
A student sleeps
b)
A student pushes a locked door that does not move
c)
a student carries his chair into another room
d)
A student sits on the carpet
7.
What is the unit for mass?
a)
Kilogram (Kg)
b)
Newton (N)
c)
Joule (J)
d)
Watt (W)
8.
How far does a car that weighs 5,000 N go if 18,000 J of work is done on it?
a)
3.8 m
b)
3.7 m
c)
3.2 m
d)
3.6 m
9.
How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?
a)
15 J
b)
45 J
c)
0 J
d)
5 J
10.
The amount of work done in a certain amount of time is known as
a)
work
b)
effort force
c)
resistance force
d)
power
11.
How much power is the tractor that drags a plow with a force of 500 N a distance of 10 meters in 20 seconds?
a)
250 Watts
b)
250 Joules
c)
100,000 Watts
d)
100,000 Joules
12.
The more POWER you use to move an object, the more work you do.
a)
True
b)
False
13.
Work done = Force x _________
a)
a. distance
b)
b. acceleration
c)
c. velocity
d)
d. speed
14.
If a group of workers can apply a force of 1,000 Newtons to move a crate 20 meters, what amount of work will they have accomplished?
a)
20,000 J
b)
200 J
c)
2,000 J
d)
20 J
15.
If 68 W of power is produced in 18 seconds, how much work is done?
a)
1,224 J
b)
0.264 J
c)
3.77 J
d)
12.24 J
16.
What is the equation for power?
a)
P = Work/time
b)
P = Force/time
c)
P = time/distance
d)
P = Work * time
17.
1. A _________is a simple machine with a fulcrum and a rigid bar.
a)
Pivot
b)
Lever
c)
Wedge
18.
2. The place where a lever pivots is called the _______.
a)
Pivot point
b)
Tissue
c)
Fulcrum
19.
3. Which type of lever is this?
a)
First Class Lever
b)
Second Class Lever
c)
Third Class Lever
20.
For a lever to be a first class lever the fulcrum needs to be ..
a)
between the load and the effort
b)
on one side and the load and effort on the other side
c)
on the same side as the load arm.
21.
Which body part acts as the fulcrums of levers?
a)
lungs
b)
kidneys
c)
joints
d)
brain
22.
6. What kind of lever is this?
a)
First Class Lever
b)
Second Class Lever
c)
Third Class Lever
23.
What is in the middle of a second class level
a)
Fulcrum
b)
Effort
c)
Load
24.
WHAT ARE THE 3 MAIN PARTS OF A LEVER?
a)
FOOT, EFFORT, REPORT
b)
FULCRUM, STRUCTURE, EFFORT
c)
FULCRUM, EFFORT, LOAD
25.
A see saw is an example of a:
a)
1st class lever
b)
2nd class lever
c)
3rd class lever
26.
A wheelbarrow is an example of a:
a)
1st class lever
b)
2nd class lever
c)
3rd class lever
27.
Third class levers give a speed advantage because they...
a)
the move a load through a large distance than the effort moves the same time
b)
Moves an effort a further distance than the load
c)
allow you to catch a fish quickly before you applied so much effort
d)
allow you to pick up a heavy load quickly
28.
Ramps, a wedge, and a screw are all examples of
a)
levers
b)
pulleys
c)
wheels and axles
d)
inclined plance
29.
For a lever to be a first class lever the fulcrum needs to be ..
a)
between the load and the effort
b)
on one side and the load and effort on the other side
c)
on the same side as the load arm.
30.
What is the mechanical advantage of the block and tackle used to lift the bale of cotton?
a)
1
b)
2
c)
3
d)
4
31.
How does a single fixed puled, like the one seen here, help you do work?
a)
changes the direction of the force
b)
increases the amount of applied force
c)
decreases the amount of applied force
d)
allows you to pull the rope a shorter distance
32.
What is the mechanical advantage of this pulley system?
a)
2
b)
3
c)
4
d)
5
33.
A flag pole is a pulley system.
a)
TRUE
b)
FALSE
34.
A_____________ pulley moves up with the load as the load is lifted.
a)
fixed
b)
movable
35.
The ideal mechanical advantage of all moveable pulleys is
a)
one
b)
four
c)
three
d)
two
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