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Detailed Notes: Force & Simple Machines (Part 1) Notes | Study Science Class 5 - Class 5

Document Description: Detailed Notes: Force & Simple Machines (Part 1) for Class 5 2022 is part of Science Class 5 preparation. The notes and questions for Detailed Notes: Force & Simple Machines (Part 1) have been prepared according to the Class 5 exam syllabus. Information about Detailed Notes: Force & Simple Machines (Part 1) covers topics like Force , Energy and Detailed Notes: Force & Simple Machines (Part 1) Example, for Class 5 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Detailed Notes: Force & Simple Machines (Part 1).

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Table of contents
Force 
Energy
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Force 

To do any work, we need to apply force. A force can make things move. When a force moves something, work is done. A push or pull applied to an object is called force. 

Example: A boy pulling a toy car, a boy pushing the paddles of a bicycle and a lady drawing water from a well.

Detailed Notes: Force & Simple Machines (Part 1) Notes | Study Science Class 5 - Class 5

Effects of Force

  • A force can move a stationary object. 
  • A force can also make a moving object move faster when applied in the direction in which the object is moving.
  •  A force can change the direction of a moving object. 
  • A force can stop a moving object. 
  • A force can slow down a moving object when applied in the opposite direction to which the object is moving.
  •  A force can change the shape of an object.

Types of Forces

  • Gravitational force or Gravity: The force that attracts objects to the center of the Earth is called gravitational force or gravity. Gravity is a force that makes things fall to the ground.

Detailed Notes: Force & Simple Machines (Part 1) Notes | Study Science Class 5 - Class 5

  • Magnetic force or magnetism: The force by which a magnet pushes or pulls iron objects or another magnet is called magnetic force.

Detailed Notes: Force & Simple Machines (Part 1) Notes | Study Science Class 5 - Class 5

  • Muscular force: When we push or pull something, we are applying muscular force.
  • Electrostatic force: Some materials when rubbed with other materials get charged. These charged materials either attract or repel other objects. This happens because of the electrostatic force.

Detailed Notes: Force & Simple Machines (Part 1) Notes | Study Science Class 5 - Class 5

  • Friction or frictional force: The force that acts between two objects when they are in contact with each other is called friction. Friction stops or slows down the movement of objects across a surface.

Detailed Notes: Force & Simple Machines (Part 1) Notes | Study Science Class 5 - Class 5

Energy

To do any work, we need energy. Energy is the ability to do work. There are many forms of energy. 

Types of Energy

  • Light energy: Light energy helps us to see things. Sun, electric bulb, tube light and candle are some sources of light.Detailed Notes: Force & Simple Machines (Part 1) Notes | Study Science Class 5 - Class 5
  • Heat energy: Heat is a form of energy. Apart from sun, we get heat energy by burning of fuels like coal, kerosene, LPG (Liquefied Petroleum Gas) and wood.

Detailed Notes: Force & Simple Machines (Part 1) Notes | Study Science Class 5 - Class 5

  • Sound energy: Radio, television, loudspeakers, horns and musical instruments are sources of sound. Living things like humans, birds and animals also produce sound.

Detailed Notes: Force & Simple Machines (Part 1) Notes | Study Science Class 5 - Class 5

  • Electrical energy: Appliances like fan, computer, washing machine and television use electrical energy. Electricity is generated at power stations and supplied to our homes through wires.

Detailed Notes: Force & Simple Machines (Part 1) Notes | Study Science Class 5 - Class 5

  • Mechanical Energy: The energy possessed by an object due to its position or its movement is called mechanical energy. It is of two types – potential energy and kinetic energy. Potential energy is due to the position of an object and kinetic energy is due to the movement of an object.

Detailed Notes: Force & Simple Machines (Part 1) Notes | Study Science Class 5 - Class 5

Sun is the greatest source of energy on Earth. It gives us heat and light. We also get energy from moving water, wind, and burning fuels.

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