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Energy
Test Description: Part 2
Instructions: Answer all questions to get your test result.
1) When energy is converted, some of the original energy is always converted to which of the following?
A
light energy
B
thermal energy
C
sound energy
D
kinetic energy
2) As a baseball flies through the air after being hit, which of the following types of energy does it have?
A
chemical energy
B
potential energy
C
kinetic energy
D
mechanical energy
3) What happens when electrical energy is changed to thermal energy?
A
a electrical conversion takes place
B
an energy change takes place
C
a force change takes place
D
an energy conversion takes place
4) When you eat fruits and vegetables, which of the following types of energy are you taking in?
A
thermal energy
B
electrical energy
C
sound energy
D
chemical energy
5) When is potential energy the greatest in a roller coaster?
A
at the bottom of the second hill
B
at the top of the first hill
C
at the top of the second hill
D
at the bottom of the first hill
6) At the end of energy conversion you will have the same as the original amount of energy. What law explains this?
A
law of power and energy
B
law of conservation of energy
C
law of energy changes
D
law of potential energy
7) Which of the following are needed to determine the kinetic energy of an object?
A
weight and height
B
distance and speed
C
volume and density
D
speed and mass
8) Which of the following do plants do during photosynthesis
A
use light energy to produce new substances with chemical energy
B
combine carbon dioxide with oxygen
C
convert thermal energy
D
break down food and molecules to release energy
9) Which of the following is true at the point where you reach the top of your jump on a trampoline>
A
the potential energy is at its maximum
B
The mechanical energy is zero
C
the potential energy is zero
D
the kinetic energy ad potential energy are equal
10) What is the gravitational potential energy of a 450N diver standing on a platform that is 10m of the ground.
A
45 N
B
4500 N
C
4500 J
D
45 J
*select an answer for all questions
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