Work, Power and Energy
Authored by Lisa Thompson
Science
8th Grade
NGSS covered
Used 1+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Work is measured in which units?
Newtons
Joules
Watts
Joule/sec
Tags
NGSS.MS-PS3-5
NGSS.MS-PS3-4
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Power is measured in which units?
Newtons
Joules
Watts
Joule/sec
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A strongman exerts 1500 N on the side of a building. After 2 minutes, the building doesn't move. How much work did he do?
180,000 J
0 J
750 J
1500 J
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An Xbox consumes 15.7 watts while in standby mode. If you leave it in standby mode for 86,400 seconds (one day), how much work was done?
1,356,490 J
1,356,480 J
1,356,470 J
1,356,460 J
Tags
NGSS.MS-PS3-5
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
You move a 0.8 kg object five meters in 4 seconds. How much power have you generated?
160 watts
10 watts
6.4 watts
17 watts
Tags
NGSS.MS-PS3-5
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If two rocks are launched through the air at the same speed, but one has twice as much mass as the other, how do their kinetic energies compare?
The kinetic energy of the two rocks is the same because they have the same speed
The rock with the greater mass will only move a small distance and then fall straight to the ground
The two rock could not have the same speed if they have different masses
The rock with the greater mass has more kinetic energy than the rock with less mass even though they are traveling at the same speeds because both mass and speed affect kinetic energy.
Tags
NGSS.MS-PS3-5
NGSS.MS-PS3-1
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which point has the most kinetic energy?
Ball G
Ball F
Ball E
Ball D
Ball A
Tags
NGSS.MS-PS3-5
NGSS.MS-PS3-1
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