Review Game Zone
Flash Cards
(current)
Games
Teachers
Search
Simple Machines
Test Description: Basic information plus input and output of forces
Instructions: Answer all questions to get your test result.
1) With a second class lever, such as a wheelbarrow, in which direction is the input force?
A
left
B
up
C
down
D
right
2) When replacing a light bulb in a lamp, how much force is applied over the distance?
A
small input force over a short distance
B
large input force over a short distance
C
small input force over a longer distance
D
large input force over a longer distance
3) How is mechanical efficiency determined?
A
output force divided by input force times 100
B
work divided by time
C
force times distance
D
output force divided by input force
4) Which of the following is a first class lever?
A
wheelbarrow
B
door
C
seesaw
D
crowbar
5) Which is a third class lever?
A
balance scale
B
hammer
C
ramp
D
crowbar
6) How are the forces compared in the use of a crowbar?
A
input force is downward, output force is upward
B
input and output forces are both downward
C
input and output forces are both upward
D
input force is upward, output force is downward
7) When a machine changes a force's size, what also changes?
A
work
B
power
C
direction
D
distance
8) What does a single pulley change on an object?
A
amount of force
B
total work accomplished
C
direction of force
D
distance you move
9) How can you increase the amount of work done?
A
increase the distance
B
increase the speed
C
carry the object
D
throw the object
10) A machine's mechanical advantage tells you
A
how long it takes to do the work
B
how much force is increased
C
the effectiveness of a machine
D
how much distance can be shortened
11) The Law of Conservation of Energy explains the
A
machine's efficiency
B
work lost to friction
C
the difference between work and power
D
machine's advantage
12) What is the purpose of a machine?
A
to make work harder, but shortening the time needed to do the work
B
to do more work in a shorter amount of time
C
to make work easier, changing the amount of work done
D
to make work easier, but not change the amount of work done
13) What decreases a machine's efficiency?
A
friction
B
distance
C
power
D
time
14) How is a machine's efficiency shown?
A
in watts
B
in percentages
C
in joules
D
in newton-meters
15) If you push a 20N chair across a floor for 15 meters, how much work is done?
A
5 watts
B
35 newton-meters
C
300 joules
D
300 percent
*select an answer for all questions
Check Results & Get Answers
Play Games with the Questions Above
Teachers: Create FREE classroom games with your questions
Click for more info!
©2007-2024
ReviewGameZone.com
|
About
|
Privacy
|
Contact
|
Terms
|
Site Map
WAIT! Find what you needed?
×
Still Looking for the Answers?
Have Another Question?
Play a Review Game with These Questions?
Want to Make Your Own Test Like This One?