Efficiency Year 10 Physics
Authored by P Haynes
Physics
12th Grade
NGSS covered
Used 50+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Efficiency is...
The amount of useful energy
The proportion of wasted energy out to total energy in
The proportion of useful energy out to total energy in
The proportion of total energy in to total energy out
Tags
NGSS.HS-PS3-3
NGSS.HS-PS3-4
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The equation is...
useful energy / total energy
wasted energy / total energy
total energy/ useful energy
total energy/ wasted energy
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Wasted energy is often lost as...
Kinetic energy
Elastic potential energy
Gravitational potential energy
Heat to the surroundings
Tags
NGSS.HS-PS3-4
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the unit of energy?
Joule
Newton
Watt
Ohm
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the energy transformation in a battery?
Chemical to Electrical
Electrical to Chemical
Thermal to Electrical
Electrical to Thermal
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the energy transformation in a light bulb?
Electrical to Light
Light to Electrical
Chemical to Light
Light to Chemical
Tags
NGSS.HS-PS3-3
7.
MULTIPLE SELECT QUESTION
1 min • 1 pt
A kettle uses 100,000J of energy to boil some water. The water gains 80,000J of thermal energy. What is the efficiency?
80%
0.80
20%
0.20
Tags
NGSS.HS-PS3-4
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