Energy Resources and Fossil Fuels

Standard: SEV4a: Differentiate between renewable and nonrenewable resources

Goals for today:1. What is energy?2. What are the types of energy?

Before we begin…. What do you see?

What is energy? power derived from the utilization of

physical or chemical resources, especially to provide light and heat or to work machines

Fact or Fiction?: Energy Can Neither Be Created Nor Destroyed

Fact: energy always conserved and converted into new forms

Types of energy Potential

Stored energy

Kinetic Energy that is in motion

Both are based on the potential to do work!

What is work? a force is said to do work if, there is a

displacement of an object in a direction

Potential energy If released, work would occur

Examples: oil in a barrel, water in a mountain lake

Kinetic energy Must be moving!!! Examples: electrical, heat, light,

motion, water, and sound.

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.

Kinetic energy examples explained Heat energy is energy that is pushed

into motion by using heat.

An example is a fire in your fireplace.

Kinetic energy examples explained Chemical Energy is energy caused by

chemical reactions.

An example of chemical energy is food when it is cooked.

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.

Kinetic energy examples explained Gravitational Energy is motion that is

caused by gravity.

An example of gravitational energy is water flowing down a waterfall.

Pop Quiz Take out a sheet of paper

Put your name on it

Label 1-5

You may use your notes

Question 1What are the two main forms of energy?

Question 2

Can energy be created or destroyed?

Question 3

When you push a bolder you are doing what?

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

Question 5What type of energy is this?

Fossil Fuels

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?

What are Fossil Fuels? Remains of ancient organisms that have

changed into coal, oil, or natural gas

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

How are fossil fuels used?Five main purposes: Heating and cooling buildings

Cooking

Transportation Generating electricity

Manufacturing

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

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.

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