Energy Efficiency
Quiz
•
Science
•
8th Grade
•
Practice Problem
•
Medium
+3
Standards-aligned
Lisa Thompson
Used 1+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
No machine in existence has 100% efficiency due to ____________________.
magic
friction
smoke
input
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
To save energy, what should you do when you leave a room ?
USE ELECTRICAL ENERGY
SHUT OFF THE LIGHTS AND TELEVISION
TURN ON THE LIGHTS AND TELEVISION
HANG YOUR CLOTHES OUTSIDE
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Another way to save energy is to...
Conserve it
Waste it
Use it
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Efficiency is calculated by useful energy output divided by total energy input, expressed as a percentage
False
True
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Energy efficiency of incandescent lightbulbs is
50%
25%
15%
5%
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Energy efficiency of wind turbines is about
90%
75%
40%
12%
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the energy efficiency of hydroelectric dams?
90%
70%
50%
29%
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