1. Student Objective Warm Up
To explain how energy transformations produce electricity
To examine the energy source use in the United States
Warm Up
When a toaster is working
it is transforming what energy
into what energy?

2. BIG Question Here are two electrical energy devices
- Energy Transformations and Conservation
BIG Question
Here are two
electrical energy
devices
transforming energy.
But where do these devices get
the electrical energy? (Discuss)

3. Electrical Energy - Unique
Electrical energy is unique from the other energy sources because it is a secondary source of energy.
That means it must be “produced” or generated by another energy source.
On the next slide you will begin a web exploration to answer these questions:
What are the other energy sources?
What energy sources are used to generate electricity?

4. Energy Sources Web Exploration
First let’s watch a BrainPOP on energy sources.
Using the web-link below complete the “Energy Sources Exploration”
3. Finish worksheet using textbook pgs
Energy Exploration Worksheet goes with this activity.

5. AFTER you are finished ALL of the Energy Sources Exploration worksheet, check your answers on the next TWO slides.

6. a. Renewable - they are replenished in a short time.
Energy Sources
1. What are the nine energy sources used in the United States? __________________________________________________________________________________________________________________
2. What are the two main categories of energy sources? Explain each.
____________________________________________________
3. What makes electricity different from other sources of energy?
__________________________________________________________________________________________________________________
5. What two sources are used the most in the United States? _________________________________________________________
6. What category of fuel are these two sources in? _________________________________________________________
7. What type of energy source are these 2 sources? ________________
Biomass, hydropower, geothermal, wind, solar, petroleum (oil), natural gas, coal, & uranium (nuclear)
a. Renewable - they are replenished in a short time.
a. Nonrenewable - supplies are limited
It is a secondary source of energy, it must be generated from other energy sources.
coal & natural gas
Fossil fuels
Nonrenewable
GO ON

7. Fossil Fuels – coal, petroleum (oil), & natural gas
Scan pages in textbook and answer these two questions:
Where did the energy in fossil fuels come from?
How is the energy in fossil fuels released?
A fossil fuel’s energy comes from the sun and is stored in the plants & animals that converted the sun’s energy into chemical energy.
A fossil fuel’s chemical energy is released when it is burned.

8. Energy Sources Web Exploration
Look at these pie charts of the energy sources in the United States for 2007 & 2011 & compare with the graphic on your worksheet. How have our energy sources changed?

9. BGE