Science -Term-1-work And Energy

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1/10 Questions

_________is a machine made up of wheel and rope.
- Screw
- Wedge
- Pulley

About This Quiz

Explore the fundamentals of work and energy through this engaging quiz. Covering key concepts such as pulleys, energy, levers, and simple machines like screws and ramps, this quiz enhances understanding and application of mechanical principles in physics.

2.

The ability to do work is called______
- Energy
- Load
- Effort
Correct Answer

A. Energy

Explanation

Energy is defined as the ability to do work. It is a fundamental concept in physics and is measured in various units such as joules or calories. Energy can exist in different forms such as kinetic energy, potential energy, thermal energy, and chemical energy. It is the capacity of a system to perform work or produce heat. In the context of this question, energy is the correct answer as it directly relates to the ability to do work.

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3.

Lever is classified into______types.
- 6
- 3
- 4
Correct Answer

A. 3

Explanation

A lever is classified into three types: first-class lever, second-class lever, and third-class lever. These classifications are based on the relative positions of the fulcrum, the effort force, and the load. Each type of lever has different characteristics and is used in different ways. Therefore, the correct answer is 3.

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4.

The SI unit of energy is________
- Newton
- Watts
- Joule
Correct Answer

A. Joule

Explanation

The SI unit of energy is joule. The joule is a derived unit of energy in the International System of Units (SI). It is defined as the amount of work done when a force of one newton is applied over a distance of one meter. The joule is commonly used to measure various forms of energy such as mechanical, electrical, and thermal energy.

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5.

The blade and sharpener are held together by________.
- Screw
- Wedge
- Pulley
Correct Answer

A. Screw

Explanation

The blade and sharpener are held together by a screw. A screw is a threaded fastener that is used to hold objects together by applying rotational force. In this case, the screw is used to secure the blade and sharpener tightly, ensuring that they remain in place and function properly.

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1
6.

An example for inclined plane is________.
- Grinder
- Nut cracker
- Ramp
Correct Answer

A. Ramp

Explanation

An inclined plane is a simple machine that consists of a sloping surface. It is used to reduce the effort required to move an object vertically by increasing the distance over which the force is applied. A ramp is a common example of an inclined plane as it allows objects to be moved up or down with less force compared to lifting them straight up. It provides a gradual slope, making it easier to transport heavy objects such as furniture or vehicles.

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7.

[simple machines help us to make work easier] true or false?
- True
- False
Correct Answer

A. True

Explanation

Simple machines are designed to make work easier by reducing the amount of force required to perform a task. They achieve this by either increasing the distance over which the force is applied or by changing the direction of the force. Examples of simple machines include levers, pulleys, inclined planes, and wheels and axles. Therefore, the statement "simple machines help us to make work easier" is true.

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8.

[Nail cutter belongs to class II lever] true or false?
- True
- False
Correct Answer

A. False

Explanation

The statement that "Nail cutter belongs to class II lever" is false. A class II lever is a lever where the load is between the fulcrum and the effort. In the case of a nail cutter, the fulcrum is located at the pivot point, but the effort (the force applied by the user) is also located at the same end. The load (the nail being cut) is located at the opposite end. Therefore, a nail cutter belongs to class III lever, where the effort is between the fulcrum and the load.

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9.

[knife,scissors and axe are examples for wedge] true or false?
- True
- False
Correct Answer

A. True

Explanation

The statement is true because a wedge is a simple machine that is used to split or separate objects. A knife, scissors, and an axe are all examples of wedges because they have a sharp edge that is used to exert pressure and separate materials.

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10.

________is the force we apply on the lever.
- Load
- Effort
- Fulcrum
- Option 4
Correct Answer

A. Effort

Explanation

The force we apply on the lever is known as the effort.

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1

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Apr 11, 2025

Quiz Edited by
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Apr 26, 2020

Quiz Created by
Cdevi7290

Science -term-1-work And Energy

_________is a machine made up of wheel and rope.

Quiz Preview

The ability to do work is called______

Lever is classified into______types.

The SI unit of energy is________

The blade and sharpener are held together by________.

An example for inclined plane is________.

[simple machines help us to make work easier] true or false?

[Nail cutter belongs to class II lever] true or false?

[knife,scissors and axe are examples for wedge] true or false?

________is the force we apply on the lever.