
3N Energy Quiz
Authored by Vino s
Science
8th Grade
Used 1+ times

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13 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the SI unit for energy?
kg
J
K
N
Answer explanation
The SI unit for energy is 'J' which stands for Joules. It is commonly used to measure energy in various fields of science and engineering.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which type of energy is related to moving objects?
Potential Energy
Thermal Energy
Electrical Energy
Kinetic Energy
Answer explanation
Moving objects are related to Kinetic Energy, which is the energy of motion.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which type of energy is related to the height of an object?
Kinetic Energy
Chemical Potential Energy
Elastic Potential Energy
Gravitational Potential Energy
Answer explanation
Gravitational Potential Energy is related to the height of an object as it depends on the object's position in a gravitational field.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The formula for Kinetic Energy is .....
1/2 mv
1/2 mv2
1/2 m2v2
1/4 m2v2
Answer explanation
The correct formula for Kinetic Energy is 1/2 mv^2, where m is mass and v is velocity.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qamar goes for a run after eating his breakfast. Which energy change takes place as he accelerates?
Chemical potential energy is converted to kinetic energy.
Chemical potential energy is destroyed.
Kinetic energy is converted to chemical potential energy.
Kinetic energy is destroyed.
Answer explanation
Chemical potential energy is converted to kinetic energy.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jackie pushes a box along the floor. The total constant horizontal force on the box is 80 N. The work done is 100 J. Friction is negligible. How far does the box move?
0.80 m
1.25 m
1.80 m
2.50 m
Answer explanation
The work done is equal to the force multiplied by the distance. Therefore, distance = work / force = 100 J / 80 N = 1.25 m.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Zachary pedals to the top of Bukit Timah hill at constant speed. Which type of energy decreases as he pedals?
chemical potential energy
elastic potential energy
gravitational potential energy
kinetic energy
Answer explanation
As Zachary pedals to the top of Bukit Timah hill, the chemical potential energy stored in his muscles is being converted into kinetic energy, so chemical potential energy decreases.
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