1. Energy Resources and Fossil Fuels

2. Standard: SEV4a: Differentiate between renewable and nonrenewable resources  Goals for today: 1. What is energy? 2. What are the types of energy?

3. Before we begin….  What do you see?

4. What is energy?  power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines

5.  Fact or Fiction?: Energy Can Neither Be Created Nor Destroyed  Fact: energy always conserved and converted into new forms

6. Types of energy  Potential  Stored energy  Kinetic  Energy that is in motion  Both are based on the potential to do work!

7. What is work?  a force is said to do work if, there is a displacement of an object in a direction

8. Potential energy  If released, work would occur  Examples: oil in a barrel, water in a mountain lake

9. Kinetic energy  Must be moving!!!  Examples: electrical, heat, light, motion, water, and sound.

10. Kinetic energy examples explained  Mechanical Energy is the energy of motion that does the work.  An example of mechanical energy is the wind as it turns a windmill.

11. Kinetic energy examples explained  Heat energy is energy that is pushed into motion by using heat.  An example is a fire in your fireplace.

12. Kinetic energy examples explained  Chemical Energy is energy caused by chemical reactions.  An example of chemical energy is food when it is cooked.

13. Kinetic energy examples explained  Electrical Energy is when electricity creates motion, light or heat.  An example of electrical energy is the electric coils on your stove.

14. Kinetic energy examples explained  Gravitational Energy is motion that is caused by gravity.  An example of gravitational energy is water flowing down a waterfall.

15. Pop Quiz  Take out a sheet of paper  Put your name on it  Label 1-5  You may use your notes

16. Question 1  What are the two main forms of energy?

17. Question 2  Can energy be created or destroyed?

18. Question 3  When you push a bolder you are doing what?

19. Question 4  You ride your bike down a hill. Is this kinetic or potential energy?

20. Question 5  What type of energy is this?

21. Fossil Fuels

22. Standard: SEV4a: Differentiate between renewable and nonrenewable resources  Target questions: 1. What are fossil fuels? 2. How do we use fossil fuels? 3. How are fossil fuels a nonrenewable energy source?

23. What are Fossil Fuels?  Remains of ancient organisms that have changed into coal, oil, or natural gas

24. Are fossil fuels formed?  Step 1: Plants and animals die  Step 2: Their remains become buried in sediment  Step 3: Their remains decay and become compressed by the earth’s geological forces  Step 4: Fossil fuel forms  https://www.youtube.com/watch?v=_8VqWKZIPrM https://www.youtube.com/watch?v=_8VqWKZIPrM

25. How are fossil fuels used? Five main purposes: Heating and cooling buildings Cooking Transportation Generating electricity Manufacturing

26. Why are fossil fuels a problem?  Fossil fuel supply is limited  Fossil fuels cause environmental harm by releasing CO2 into the atmosphere  Please note:  Energy sources that cause environmental harm, are non-replaceable after use, and come from organic materials (like fossil fuels) are called nonrenewable energy

27. Where is most of our energy going?  Most of the energy produced is for electricity.  Electricity is made by an electric generator.  Electric generators convert mechanical energy into electric energy.

28. How does a generator work?  Water is heated by burning coal  Then the steam is pushed through the generator  The generator has a turbine (wheel) inside that changes the steam into electricity  https://www.youtube.com/watch?v=GI7AhajfhWE