Work and Energy in Physics
Explore the fundamental concepts of work, energy, and power in physics with this engaging Grade 8 science worksheet.
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Work and Energy in Physics
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Read each question carefully and answer to the best of your ability. Show all your work for calculation problems.
1. Which of the following is the standard unit of work in the International System of Units (SI)?
Watt
Joule
Newton
Meter
2. What type of energy is stored in a stretched rubber band?
Kinetic energy
Thermal energy
Gravitational potential energy
Elastic potential energy
3. Work is done only when a force causes an object to move in the direction of the force.
True
False
4. According to the law of conservation of energy, energy can be created or destroyed.
True
False
5. The ability to do work is called .
6. Power is the rate at which is done.
7. A student pushes a box with a force of 50 N across a distance of 10 meters. Calculate the work done by the student.
8. Explain the difference between kinetic energy and potential energy, and provide an example for each.
9. The diagram below shows an energy pyramid. Label the different trophic levels and explain how energy flows through them.
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