Before the bell rings…
 Get your binder/folder and a pencil/pen for
Mr. Bell to check.
 Grab a sheet off the middle stool. 

Watch this video…
 Best Hockey Hits …
 On a piece of paper in your notes, write down as many vocabulary terms about energy that you can that you see in the video.
 Try and remember from what you have learned in the past….

What is Energy?

What is Energy?
 Energy is ability to do work.

Work is exerting force (F) over a distance (d)

W = F X d

Force (F) is a push or pull

1 st Law of Thermodynamics
 Law # 1 :

Energy can be changed from one form to another, but cannot be created or destroyed.

How does energy relate to the
Big Bang?

What are the 2 types of energy?

What is Potential
Energy?
 Stored Energy!
 Stored in 3 ways:

Gravitationalstored energy from object held above the ground


Chemicalstored energy in bonds of a substance.
Elasticstored energy in a stretched substance.

What is Kinetic Energy?
 Energy of motion
OUCH
!!!!!!!!!!

What types of energy transformations do we see in these demonstrations?
 Rubber Band
 Isopropyl Alcohol
 Ball

What is happening to the energy of the Bball?

2 nd Law of Thermodynamics
 Law # 2 :

Energy goes from a more usable form (high quality) to a less usable form (low quality)
• High quality  Solar
• Low quality  Heat
• Heat is considered waste energy, it cannot be reused to do work
• Energy is NOT DESTROYED, ONLY WASTED

Looking at Energy
Transformations in Real Life

Situations
What energy transformations takes place?