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Computer - Cycle Test 4 - Std 4
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CHAPTER 9 Work And Energy
WORK AND ENERGY KEY WORDS work geothermal energy convenience photosynthesis substances windmills sources electrical generate fuels solar petroleum chemical kerosene batteries Define the terms 1.Work: Work is said to be done only if the force exerted on an object moves the object from its position. 2.Energy: Energy is the ability to do work. Questions and answers Q-1Name different sources of energy. Ans: Sources of energy are: Sun Water Wind Fuels and Earth Q-2 List few fuels and their uses. Ans: Fuel Use coal coal is used to cook food. Generate electricity. petroleum fuel for vehicles ...
CHAPTER 8 Force
FORCE KEY WORDS force catapult muscular exerted elastic friction frictional resist gravitational motion Define the terms 1. Force: A push or a pull applied to an object is called a force. 2. Gravity: Gravity is the gravitational force exerted by the earth on all the objects. 3. Friction: Friction is a type of force that stops a moving object. When two surfaces come in contact with each other, they exert force of friction on each other Question And answers Q-1Write effects of force. Give an example for each. Ans: Effects of force 1. Force can move an object.eg: A ball moves when kicked. 2. Force can stop a moving object. Eg: A Cycle stops when brakes are applied. 3. Force can change the direction of a moving object. Eg: The player hits the shuttle cock to change its d...
CHAPTER 13 Industries in India
INDUSTRIES IN INDIA KEY WORDS nature handloom raw material handicraft finished goods cottage manufacturing small scale industry large scale worker employ occupation processing manual labour warehouse Define the terms 1. Manufacturing: The process of converting raw materials into finished goods is known as manufacturing. 2. Industry: The manufacturing unit where raw material is converted into finished good is known as industry. 1. Worker: A worker is a person who has acquired special skills and works at a specific occupation. He does manual labour and gets paid for it. Questions and Answers Q-1 . Name the three types of industries. Ans: Cottage industries, small scale industries and large scale industries. Q-2 . What do you understand by cottage industries...
CYCLE TEST 4, MATHS REVISION QUESTION BANK CLASS 4 (A,B,C)
CYCLE TEST 4, MATHS REVISION QUESTION BANK CLASS 4 (A,B,C)