Download The Down-Low On Energy

The Down-Low On Energy
What is it?
Why is it important?
Where does it come from?
What does it do?
Before We Begin
• Take a moment and think about what energy is. How would you
define it?
• Write your definition or description of energy on a piece of paper.
What is Energy???
• Definition: The ability to do work.
Forms of Energy
• Thermal Energy (Heat)
• Radiant Energy (Light)
• Electrical Energy
• Chemical Energy
• Mechanical Energy
Types of Energy
• Potential Energy: Stored energy
• Kinetic Energy: Energy of motion
Examples of Energy
We will demonstrate 
How Do We Measure Energy
There are many ways to measure energy but one of the main constant
units of measure is the:
• BTU: British Thermal Unit
• 1 BTU is the amount of energy it takes to heat 1 pound of water 1
degrees F.
Can Energy Change Forms???
• YES!!
• ABSOLUTELY!!
• IT OFTEN DOES!!
• WHY? HOW? WHERE?
• WE’LL EXPLAIN…
Examples of Energy Changes
• A flashlight has stored chemical energy in the form of batteries. When
you flip the switch current flows through the light bulb and
illuminates. Stored chemical energy has been changed to light energy.
• You want to cook some food at home. You turn on your propane
(Stored chemical energy) stove and ignite it to cook (Heat) your food.
Stored chemical energy has been changed to heat.