What is energy? How are energy and work related?
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1 What is energy? How are energy and work related?
2 STARTER Do now! What is energy?
3 Aims Understand that there are different forms of energy.
4 What is Energy? The capacity to do work Not a very good definition!
5 Types of energy Energy can take many forms;
6 Heat Unlucky
7 Light
8 Sound Best group EVER!
9 Kinetic (movement)
10 Electric
11 Chemical
12 Gravitational potential
13 Elastic/strain
14 Nuclear
15 Types of Energy Heat Light Sound Kinetic Electric Chemical Gravitational Elastic/strain Nuclear
16 Types of Energy Heat Light Sound Kinetic Electric Chemical Gravitational Elastic/strain Nuclear Stored/potential
17 List the types of energy you know and give an example Light Energy A light bulb 2. Kinetic Energy Anything to do with movement, for example a moving car. 3. Gravitational Potential Energy A Snowboarder at the top of a mountain. 4. Sound Energy A speaker. 5. Electrical Energy An ipod 6. Chemical Energy Batteries 7. Heat Energy A Bunsen flame. 8. Elastic Energy A stretched rubber band
18
19 Energy Transformations 1. Wind turbine Kinetic energy 2. Person running energy energy Kinetic energy 3. Rubbing your hands together Kinetic energy 4. Toy car that you pull back energy energy energy Kinetic energy 5. Loudspeaker 1/8/2016 energy Kinetic energy cgrahamphysics.com 2016 energy
20 The Law of Conservation of Energy Energy can be changed (transformed) from one type to another, but it can never be made or destroyed.
21 This means that the total amount of energy in the Universe stays the same!
22 Energy Flow diagrams We can write energy flow diagrams to show the energy changes that occur in a given situation. For example, when a car brakes, its kinetic energy is transformed into heat energy in the brakes. Kinetic heat
23 Other example work it out as a group! When a rocket launches.
24 Other example When a rocket launches. Chemical kinetic + sound + heat gravitational
25 Energy Circus Around the room are a few examples of energy changes (some simple, some a little more complicated!) For each example I want you to write the name of the experiment and then the energy flow diagram for that experiment You will have 2 minutes on each example.
26 Ready?
27 Go!
28 Station 1 Light a bunsen burner Show the energy flow diagram for this
29 Station 2 Bounce a bouncy ball (say that quickly 5 times!) Show the energy flow diagram for this
30 Station 3 Heat a piece of magnesium ribbon in a Bunsen burner Show the energy flow diagram for this
31 Station 4 Push a matchbox car down the ramp Show the energy flow diagram 1/8/2016 for this cgrahamphysics.com 2016
32 Station 5 Blow through the trumpet Show the energy flow diagram 1/8/2016 for this cgrahamphysics.com 2016
33 Station 6 Complete the circuit to light the lamp Show the energy flow diagram for this
34 Station 7 Roll the Pringles tin along the desk and watch what happens Show the energy flow diagram for this
35 Station 8 Stretch the cups between yourself and a partner One of you speak into your cup The other listens through their cup Show the energy flow diagram for this
36 Station 9 Can you yo-yo? Show the energy flow diagram for this
37 Station 10 Clack the castanets Show the energy flow diagram for this
38 Watch the following movie clip Can you identify at least two different energy transfers in it! Make sure to write them down as you watch
Name: Date: Block: IP 670 Conservation of Energy Notes
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