Types of Energy | Energy Forms | Energy Sources and Uses - By Lumos Learning
Transcript
| 00:0-1 | Hello , friends . Today we'll learn about energy . | |
| 00:05 | Yeah , energy is the ability to do work . | |
| 00:09 | It takes energy to play to stand up . There | |
| 00:16 | are many types of energy which all fall into two | |
| 00:19 | primary types . The energy of moving objects called the | |
| 00:24 | kinetic energy and the energy that is stored called the | |
| 00:27 | potential energy . Let's see the different types of energy | |
| 00:31 | . One by one . Gravitational energy . It is | |
| 00:35 | associated with gravity or gravitational force . It is the | |
| 00:40 | energy held by an object because of its high position | |
| 00:44 | compared to a lower position , for example , Mm | |
| 00:48 | . See these elephants . This one has more gravitational | |
| 00:52 | potential energy as it is on higher ground , and | |
| 00:56 | this one has less . Whereas gravitational force acting on | |
| 01:00 | both is the same thermal or heat energy . It | |
| 01:05 | is created from the vibration of molecules and atoms within | |
| 01:09 | substances . The faster they move , the more energy | |
| 01:14 | they produce and the hotter they become chemical energy . | |
| 01:19 | It is the potential of a chemical substance that undergoes | |
| 01:22 | a transformation through a chemical reaction to transform other chemical | |
| 01:27 | substances . Mm . For example , the food we | |
| 01:31 | eat is digested to convert chemical energy into other forms | |
| 01:36 | of energy used by cells electrical energy . It is | |
| 01:41 | generated by moving electric charges called electrons . Lighting and | |
| 01:46 | electric cells are examples of electrical energy , radiant or | |
| 01:52 | light energy . It is a form of electromagnetic radiation | |
| 01:57 | . Light travels in waves , and it's the only | |
| 02:00 | kind of energy humans can see . For example , | |
| 02:04 | the energy from the sun nuclear energy . It is | |
| 02:09 | the energy that holds together the nucleus of atoms . | |
| 02:12 | It is released during nuclear fusion . Elastic energy . | |
| 02:18 | Uh , see this toy with spring elastic objects like | |
| 02:23 | an elastic band or coiled spring stores . Elastic energy | |
| 02:27 | . When a force causes them to be squashed or | |
| 02:30 | stretched mechanical or motion energy , it is the energy | |
| 02:36 | associated with the position and motion of an object sound | |
| 02:41 | energy . It is produced when sound waves move outward | |
| 02:45 | from a sound source or a vibrating object . The | |
| 02:49 | standard unit of measure for energy is the jewel , | |
| 02:53 | which is abbreviated as J . Oh yes , it's | |
| 02:57 | time to learn the law of conservation of energy . | |
| 03:00 | It states that energy can never be created nor destroyed | |
| 03:05 | , but it can be transformed from one type to | |
| 03:08 | another . Conservationists classify the energy into two types , | |
| 03:14 | renewable and nonrenewable . Non renewable are those energy sources | |
| 03:20 | , which cannot renew itself or takes millions of years | |
| 03:24 | for its formation . These include nuclear fuels , petroleum | |
| 03:29 | , natural gas , coal , etcetera . Renewable energy | |
| 03:34 | is those energy sources which can be renewed easily by | |
| 03:37 | physical , chemical or biological process . Examples are wind | |
| 03:42 | power from windmills and solar power from the sun . | |
| 03:47 | We should save energy as much as possible . Saving | |
| 03:51 | energy can reduce greenhouse gas emissions and contribute to a | |
| 03:55 | healthier planet . Now you know a lot about energy | |
| 04:00 | . Stay tuned by by . |
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DESCRIPTION:
Let's Learn about various energy types.
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Types of Energy | Energy Forms | Energy Sources and Uses is a free educational video by Lumos Learning.
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