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Work, Energy, and Power Quiz

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Questions and Answers

What provides the energy for the life processes of living beings?

Water
Sunlight
Air
Food (correct)

What concept closely relates to work and is studied in the chapter?

Energy (correct)
Friction
Force
Acceleration

Why do some engines require fuel like petrol and diesel?

To produce sound
To generate electricity
To create heat
To provide energy for work (correct)

What do living beings and machines need energy for?

To perform activities and work (D) Signup and view all the answers

What is the difference between the way 'work' is used in day-to-day life and in science?

'Work' in day-to-day life involves force applied over a distance (B) Signup and view all the answers

What is the source of energy for the life processes of living beings?

Sunlight (A) Signup and view all the answers

Why do some engines require fuel like petrol and diesel?

To power mechanical work (D) Signup and view all the answers

What closely related concept is studied in the chapter along with work and energy?

Power (A) Signup and view all the answers

What do living beings and machines need energy for?

To maintain body temperature (A) Signup and view all the answers

What is the difference between the way 'work' is used in day-to-day life and in science?

In science, work refers to physical or mental effort, while in day-to-day life, it refers to a job or occupation. (B) Signup and view all the answers

Study Notes

Energy

The source of energy for living beings is food.
Living beings need energy for processes like growth, movement, and reproduction.
Machines need energy to perform tasks like moving objects or generating heat.

Work

Work is a closely related concept to energy.
In everyday language, 'work' can mean any activity, but in science, 'work' is defined as the transfer of energy when an object is moved by a force.
Engines need fuel like petrol and diesel because they convert the chemical energy stored in fuel into mechanical energy to do work.

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Description

Test your knowledge of work, energy, and power with this quiz. Explore the concepts related to the motion of objects, cause of motion, gravitation, and the role of energy in life processes.