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Kinetic Energy ( 8 marks ) With Mark Scheme

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Kinetic Energy ( 8 marks ) With Mark Scheme

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Kinetic energy and elastic energy.  18.01.17 

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Kinetic energy and elastic energy.  18.01.17 

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Gravitational Potential and Kinetic Energy | GCSE Physics | Doodle Science

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Work, Energy, and Power: Crash Course Physics #9

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Calculating Power. Mark Scheme ( 10 marks).

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Calculating Power. Mark Scheme ( 10 marks).

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Electronic Configuration - Mark Scheme (8 marks)

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Electronic Configuration - Mark Scheme (8 marks)

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Electron Configuration Diagrams | Properties of Matter | Chemistry | FuseSchool

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The Periodic Table: Crash Course Chemistry #4

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Lesson 2. Recap. Electron Configuration. 12.01.17 

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Lesson 2. Recap. Electron Configuration. 12.01.17 

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Worksheet for Lesson 2 Electron configuration 

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Worksheet for Lesson 2 Electron configuration 

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Energy Transfers. Bungee Jump - Mark Scheme (7 marks).

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Energy Transfers. Bungee Jump - Mark Scheme (7 marks).

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Solids, Liquids and Gasses - Mark Scheme (6 marks).

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Solids, Liquids and Gasses - Mark Scheme (6 marks).

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Heat Transfer - Conduction and Convection | GCSE Physics | Doodle Science

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What Is Energy?

Energy is hard to define. We have lots of ways of explaining it, but none of them are ideal. We know that energy is a property of objects that can be moved from one object to another, and from one type of energy to another. We know that when things move fast, they have a lot of energy. And when things are put in a position where they definitely will move if released, they have potential energy. But it's unclear exactly what energy 'is.'

In physics, we define energy as the ability of a system to do work. It's like a currency that can be used to make things happen. And unfortunately, that's probably the best thing explanation that we have.

But one thing's for sure: objects can have energy, and that energy can be calculated. And when we make that calculation, we discover something interesting: we discover that energy is conserved. Conservation of energy says that energy isn't created or destroyed, it can only move from one object to another, or from one type of energy to another.

For example, if you take a pool shot the energy from your arm caused the cue ball to move, which after the collision caused the target ball to move (assuming you didn't miss!).

Types of Energy

But if energy can transfer from one type to another, the next obvious question is: What types of energy are there?

Well, there are a lot of types of energy. There's kinetic (or movement) energy, gravitational potential (or stored) energy, elastic potential energy, chemical energy, light energy, sound energy, nuclear energy, mechanical energy, heat energy and many more.

Kinetic energy is movement energy - faster moving objects have more of it. Gravitational potential energy is energy stored in objects that are high up. For example, when you lift a ball up in the air, you're giving it gravitational potential energy. Elastic potential energy is energy stored in stretched rubber bands and springs. Chemical energy is energy stored in food, or gas for your car, or the chemicals in batteries. Light energy is energy inside light and sound energy is the energy carried by sound waves. Nuclear energy is the energy stored in the atom. Mechanical energy is energy in turning joints, like your elbows and the wheels of bicycles. Finally, heat energy is energy in the form of hot, fast moving molecules, like in a boiling pot of tea.

These are all fundamentally the same thing, and energy can be changed from any one of these types into the others.

Energy Conversions

Let's go through some examples of energy conversions. Let's say that a car is rolling down a hill with its engine turned off. What energy transfer is happening?

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types of energy conversions - video & lesson transcript | study.com

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Types of Energy Conversions - Video & Lesson Transcript | Study.com

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Energy is hard to define. We have lots of ways of explaining it, but none of them are ideal. We know that energy is a property of objects that can be moved from one object to another, and from one type of energy to another.

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Conservation of Energy and Energy Transfers 6.01.17. 

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Conservation of Energy and Energy Transfers 6.01.17. 

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Recap of energy types, energy transfers and efficiency.

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Worksheet for Lesson 1. Periodic Table Task 5.01.17.

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Worksheet for Lesson 1. Periodic Table Task 5.01.17.

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Lesson One. Recap. Fundamental Ideas. Atoms and the Periodic Table 5.01.17.

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Lesson One. Recap. Fundamental Ideas. Atoms and the Periodic Table 5.01.17.

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Link to the AQA Website - Past Papers and Mark Schemes for C2.

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Link to the AQA Website - Past Papers and Mark Schemes for C2.

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http://www.aqa.org.uk/subjects/science/gcse/chemistry-4402/past-papers-and-mark-schemes

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Introduction to energy transfers. Conduction and Convection.

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Link to the AQA Website - Past Papers and Mark Schemes for P1. 

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Link to the AQA Website - Past Papers and Mark Schemes for P1. 

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http://www.aqa.org.uk/subjects/science/gcse/physics-4403/past-papers-and-mark-schemes