
Exploring Work and Energy Concepts
Authored by Samson Sanni
Mathematics
7th Grade
Used 2+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula to calculate work done?
Work = Force + Distance
Work = Distance x Time
Work = Force x Distance x cos(θ)
Work = Force / Distance
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a force of 10 N moves an object 5 m, how much work is done?
75 J
25 J
50 J
40 J
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is energy transfer? Give an example.
An example of energy transfer is a car moving on a road.
Energy transfer occurs when a light bulb is turned off.
An example of energy transfer is heat moving from a hot stove to a pot of water.
Energy transfer is the process of making toast in a toaster.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
List three different forms of energy.
Sound energy
Chemical energy
Nuclear energy
Kinetic energy, potential energy, thermal energy
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Explain the principle of conservation of energy.
Energy is only lost in transformations.
Energy can be created from nothing.
Total energy in a closed system can change over time.
Energy cannot be created or destroyed, only transformed; total energy in a closed system remains constant.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a ball is dropped from a height, what happens to its potential energy?
The potential energy decreases as the ball falls.
The potential energy increases as the ball falls.
The potential energy remains constant throughout the fall.
The potential energy is converted entirely to kinetic energy before hitting the ground.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you calculate the kinetic energy of an object?
KE = 0.5 * m * v^2
KE = m * v
KE = 0.5 * m * v
KE = m * v^2 / 2
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