Review Game Zone
Flash Cards
(current)
Games
Teachers
Search
PS Ch. 5 Work And Machines
Test Description: Ch. 5 Review
Instructions: Answer all questions to get your test result.
1) Power is work done over _____
A
distance
B
energy
C
time
D
watt
2) Some of the energy put into a machine is changed into heat because of _____
A
efficiency
B
friction
C
mechanical advantage
D
lever
3) A machine that only changes the direction of a force has a mechanical advantage of _____
A
10
B
100
C
5
D
1
4) The measure of how much work put into a machine is changed into useful work put out by the machine is _____
A
mechanical advantage
B
effort force
C
ideal mechanical advantage
D
efficiency
5) In a first class lever
A
the effort force is in between the resistance force and the fulcrum
B
the mechanical advantage is 0
C
the resistance force is in between the effort force and the fulcrum
D
the fulcrum is in between the effort and resistance forces
6) How much power does a person weighing 500N need to climb a 3 m ladder in 5 s?
A
3 joules
B
3 watts
C
30 watts
D
30 joules
7) Using a ramp 6 m long, workers apply an effort force of 1,250 N to move a 2,00 N crate onto a platform 2 m high. What is the efficiency of the ramp?
A
35%
B
7,500 joules
C
53%
D
4,000 joules
8) Which of these cannot be done by a machine?
A
multiply energy
B
work
C
multiply force
D
change direction of a force
9) In an ideal machine which of the following is true?
A
Work input is less than work output.
B
Work input is greater than work output.
C
Work input is equal to work output.
D
Work input is dependent on work output.
10) An adult and a child are on a seesaw, when the fulcrum is in the middle the child can not move the adult. How should the fulcrum be moved so the two can seesaw?
A
toward the child
B
move to the left
C
no movement necessary
D
toward the adult
*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?