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Physical Science: Chapter 6 Practice Test

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1.
3 points
An inventor claims that he has invented a machine that puts out twice as much energy as is put into it. What law of physics says that his machine can't really do this?
2.
3 points
Perfectly elastic collisions occur, but only under special circumstances.
3.
3 points
The largest potential source of energy in the universe is ______________ energy.
4.
3 points
The force doing work in electrical energy is a field force.
5.
3 points
Radiant energy involves the interaction of what charges?
6.
3 points
A system has energy when it can apply a ________ to move another system through a distance.
7.
3 points
The source of the sun's energy is
8.
3 points
The loss or gain of thermal energy by a system is called __________.
9.
3 points
Two people accidentally bump into each other while trying to go through a doorway. What kind of collision do they experience?
10.
3 points
Your body is full of chemical energy and mass energy.
11.
3 points
Chemicals that can react have only potential energy.
12.
3 points
Molecules store energy in _________________ (2 words).
13.
3 points
Which nuclear process releases energy when one atom splits?
14.
3 points
Elastic potential energy is measured from the position of the stretched length of the spring involved.
15.
3 points
The force doing work in electrical energy is a ________ force.
16.
3 points
Cities are measurably hotter than the surrounding suburbs.
17.
2 points
How many significant digits are in the quantity 3.00 x 10⁸ m/s?
18.
3 points
What nuclear process releases energy when two atoms merge?
19.
3 points
Energy can be classified by
20.
3 points
Electrical devices are able to convert electrical energy into __________ energy.
21.
3 points
Chemicals that can react have only potential energy.
22.
3 points
When a pendulum is pulled to the side, it has gained ___________ energy relative to its zero reference position.
23.
3 points
If you jump up on a table, you are converting gravitational potential energy to kinetic energy.
24.
3 points
You lift your textbook and place it on the top shelf of a bookcase. You have just increased its _______________ energy.
25.
2 points
How many significant digits are in the quantity 6.0 m/s?
26.
3 points
A warm pot of water has
27.
3 points
Potential energy can be energy of position or energy of ____________ while kinetic energy is energy of motion.
28.
3 points
Radiant energy involves the interaction of _________________ energies.
29.
3 points
If you push with all your might against the side of your school, you have done mechanical work.
30.
3 points
An infinite amount of energy is available for us to use.
31.
3 points
Which of the following is NOT a type of radiant energy?
32.
3 points
Work and energy are essentially the same thing.
33.
3 points
Energy, like momentum is never 100% conserved in collisions in the real world.
34.
2 points
When a force acts on an object to movie it through a distance, _______________ (2 words) is done.
35.
3 points
Electricity has the ability to do work.
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