Energy Efficiency
Quiz
•
Physics
•
9th - 12th Grade
•
Medium
+6
Standards-aligned
Sarah McSwain
Used 70+ times
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22 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Efficiency is always _____________
less than 1%
more than 100%
less than 100
less than 100%
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The energy output will always be ______________
less than the energy input
more than the energy input
Tags
NGSS.HS-PS3-1
NGSS.HS-PS3-4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a cyclist puts 600 J of work on his bicycle and the bicycle gives out 140 J of useful work. Calculate the efficiency of a cyclist.
{ Work Output / Work Input } × 100 %
= {140 x 600} × 100 %
= 8400000 %
{ Work Output / Work Input } × 100 %
= {140 / 600} × 100 %
= 23.3 %
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A heat engine gives out 500 J of heat energy as useful work. If the energy supplied has a value of 1250 J, what is the engine's efficiency?
40%
2.5 %
Tags
NGSS.HS-PS3-3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Efficiency is always less than 100%, why?
It isn't, it should be equal to 100%
Because of energy transference due to friction
Tags
NGSS.HS-PS3-4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can we increase efficiency?
Reduce the cold
Get more the friction
Drive slower
Reduce the friction
Tags
NGSS.HS-ETS1-3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is wasted energy?
The energy that is lost to heat or other energy types that aren’t useful.
A comparison of how much energy is used to do work versus how much is lost or wasted to the environment.
The energy that you throw away.
The total amount of energy put into a system.
Tags
NGSS.HS-PS3-4
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