Ch-28 Work, Force and Energy by Prarthna Khanijou https://padlet.com/khanijouprarthna/Padlet EVS Class IV en-us 2021-12-29 07:57:58 UTC 2023-03-29 05:51:17 UTC hello@padlet.com FORCE khanijouprarthna https://padlet.com/khanijouprarthna/Padlet/wish/1967471014 The push or pull applied on a body is called force. All movements are the result of some kind of a force.]]> 2021-12-29 08:02:24 UTC https://padlet.com/khanijouprarthna/Padlet/wish/1967471014 khanijouprarthna https://padlet.com/khanijouprarthna/Padlet/wish/1967473259 2021-12-29 08:05:12 UTC https://padlet.com/khanijouprarthna/Padlet/wish/1967473259 Kinds Of Force khanijouprarthna https://padlet.com/khanijouprarthna/Padlet/wish/1967486073 1. MUSCULAR FORCE: When we push a swing or catch a moving ball, we use the muscle of our arm.
2. MAGNETIC FORCE: Bring a magnet near a few iron pins. The magnet pulls these iron pins to it.
3. ELASTIC FORCE: When we use a catapult to throw a stone. When we stretch the rubber strip of the catapult, the force has been applied to the stone.
4. MECHANICAL FORCE: The force applied with the help of tools.
5. GRAVITATIONAL FORCE: The force by which the earth pulls the object towards it. ]]> 2021-12-29 08:24:47 UTC https://padlet.com/khanijouprarthna/Padlet/wish/1967486073 WORK khanijouprarthna https://padlet.com/khanijouprarthna/Padlet/wish/1967489167 Work is said to be done only when a force (push or pull) moves a body through a distance.]]> 2021-12-29 08:29:51 UTC https://padlet.com/khanijouprarthna/Padlet/wish/1967489167 ENERGY khanijouprarthna https://padlet.com/khanijouprarthna/Padlet/wish/1967490172
ENERGY:
Energy is the ability or capacity of a body to do work. All living things use energy to work. Energy can be changed from one form to another example: a call bell turns electrical energy to sound energy]]> 2021-12-29 08:31:28 UTC https://padlet.com/khanijouprarthna/Padlet/wish/1967490172 Sources of energy khanijouprarthna https://padlet.com/khanijouprarthna/Padlet/wish/1967493229 1. SUN: The heat of the sun is the main source of energy.
2. WIND: It is produced by the movement of air.
3. WATER: Water energy is produced by movement of water.
4. ATOM: It is the source of energy.]]> 2021-12-29 08:35:48 UTC https://padlet.com/khanijouprarthna/Padlet/wish/1967493229 Forms Of Energy khanijouprarthna https://padlet.com/khanijouprarthna/Padlet/wish/1967494936 MUSCULAR ENERGY
When we lift, pull, or push an object, we use energy stored in our muscles. The energy stored in the muscles of human beings or animals is called muscular energy.]]> 2021-12-29 08:38:28 UTC https://padlet.com/khanijouprarthna/Padlet/wish/1967494936 khanijouprarthna https://padlet.com/khanijouprarthna/Padlet/wish/1973537501 WIND ENERGY
Moving air is called wind. Wind possesses energy called wind energy. It can be used by rotating the blades of a windmill. This energy is used to run a pump to draw underground water and generate electricity.]]> 2022-01-04 05:18:19 UTC https://padlet.com/khanijouprarthna/Padlet/wish/1973537501 khanijouprarthna https://padlet.com/khanijouprarthna/Padlet/wish/1973542350 WATER ENERGY
Flowing water has energy in it. Water falling from the dams is used to rotate turbines to generate electricity. Electricity produced by the energy of flowing water is called hydroelectricity. ]]> 2022-01-04 05:22:50 UTC https://padlet.com/khanijouprarthna/Padlet/wish/1973542350 khanijouprarthna https://padlet.com/khanijouprarthna/Padlet/wish/1973548399 HEAT ENERGY
The energy present in a hot body is called heat energy. It is obtained by burning fuels like wood, coal, and petrol. ]]> 2022-01-04 05:28:47 UTC https://padlet.com/khanijouprarthna/Padlet/wish/1973548399 khanijouprarthna https://padlet.com/khanijouprarthna/Padlet/wish/1973552359 ELECTRICAL ENERGY
The energy that we obtain from electricity is called electrical energy. We use this energy to light electric bulbs and run different electrical appliances like irons, heater. ]]> 2022-01-04 05:32:42 UTC https://padlet.com/khanijouprarthna/Padlet/wish/1973552359 khanijouprarthna https://padlet.com/khanijouprarthna/Padlet/wish/1973553846 SOUND ENERGY
A sound is also a form of energy that is experienced when sound from an alarm clock or call bell travel to us.]]> 2022-01-04 05:34:07 UTC https://padlet.com/khanijouprarthna/Padlet/wish/1973553846 khanijouprarthna https://padlet.com/khanijouprarthna/Padlet/wish/1973555969 SOLAR ENERGY
The energy that we get from the sun is called solar energy. It is used in solar cookers, solar heaters for cooking and heating. ]]> 2022-01-04 05:36:22 UTC https://padlet.com/khanijouprarthna/Padlet/wish/1973555969