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Energy In all it’s forms. What is energy? The ability to do work or move objects Energy is all around you! – You can hear energy as sound. – You can see.

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Presentation on theme: "Energy In all it’s forms. What is energy? The ability to do work or move objects Energy is all around you! – You can hear energy as sound. – You can see."— Presentation transcript:

1 Energy In all it’s forms

2 What is energy? The ability to do work or move objects Energy is all around you! – You can hear energy as sound. – You can see energy as light. – And you can feel it as wind.

3 How is all energy divided? Potential Energy Kinetic Energy All Energy Including: Gravitational Chemical Elastic Electrical Nuclear Including: Motion Thermal (heat) Light Sound

4 Potential Kinetic energy of position or energy in storage. – Water behind a dam – Hammer over head – Food on the plate energy of motion, the form capable of doing work – Flowing water – A falling hammer – Heat

5 What is Potential Energy? oEnergy that is stored and waiting to be used later

6 What is Gravitational Potential Energy? oPotential energy due to an object’s position oG.P.E. = mass x height x gravity

7 GPE and KE Trebuchet - http://science.discovery.com/videos/punkin- chunkin-2009-trebuchets.html http://science.discovery.com/videos/punkin- chunkin-2009-trebuchets.html Roller Coaster - http://www.teachersdomain.org/resource/he w06.sci.phys.maf.rollercoaster/ http://www.teachersdomain.org/resource/he w06.sci.phys.maf.rollercoaster/

8 What is Elastic Potential Energy? oPotential energy due compression or expansion of an elastic object. Notice the ball compressing and expanding

9 Elastic Potential Energy Road Runner - http://www.youtube.com/watch?v=Jnj8mc04r 9E http://www.youtube.com/watch?v=Jnj8mc04r 9E

10 What is Chemical Potential Energy? oPotential energy stored within the chemical bonds of an object

11 Chemical Energy Fuel and food are forms of stored chemical energy.

12 Chemical Potential Energy Skateboard - http://vimeo.com/2106912http://vimeo.com/2106912 Gummy bears - http://www.youtube.com/watch?v=VVxWuco Vn9A http://www.youtube.com/watch?v=VVxWuco Vn9A

13 Nuclear Potential Energy

14 Nuclear Energy Nuclear energy is the energy stored in the position of protons and neutrons in the nucleus of an atom.

15 Nuclear Energy When the nucleus splits (fission), nuclear energy is released in the form of heat energy and light energy. Nuclear energy is also released when nuclei collide at high speeds and join (fuse).

16 Nuclear Energy The sun’s energy is produced from a nuclear fusion reaction in which hydrogen nuclei fuse to form helium nuclei.

17 Nuclear Energy Nuclear energy is the most concentrated form of energy.

18 Electromagnetic Energy Light is a form of electromagnetic energy. Each color of light (Roy G Bv) represents a different amount of electromagnetic energy. Electromagnetic Energy is also carried by X-rays, radio waves, and laser light.

19 Electrical Potential Energy Energy stored in the form of electricity

20 Thermal/Heat Energy Energy from quickly moving molecules Heat energy can be produced by friction.

21 Law of Conservation of Energy Energy cannot be created or destroyed; it may be transformed from one form into another, but the total amount of energy never changes.

22 Energy conversions All forms of energy can be converted into other forms. – The sun’s energy through solar cells can be converted directly into electricity. – Green plants convert the sun’s energy (electromagnetic) into starches and sugars (chemical energy).

23 Other energy conversions – In an electric motor, electromagnetic energy is converted to mechanical energy. – In a battery, chemical energy is converted into electromagnetic energy. – The mechanical energy of a waterfall is converted to electrical energy in a generator.

24 Energy Conversions In an automobile engine, fuel is burned to convert chemical energy into heat energy. The heat energy is then changed into mechanical energy.

25 Chemical  Mechanical  Heat

26 QUIZ TIME! What energy transformation occurs when an electric lamp is turned on? ELECTRICAL ENERGY  ELECTROMAGNETIC ENERGY

27 What types of energy are shown below? Mechanical and Thermal Energy (Don’t forget friction)

28 What type of energy is shown below? Chemical Energy

29 What types of energy are shown below? Electrical, Mechanical and Electromagnetic Energy

30 What type of energy is shown below? Chemical Energy (yummy)

31 What type of energy is shown below? Thermal Energy

32 What types of energy are shown below? Mechanical, Electromagnetic, Electrical, Chemical and Thermal Energy


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