Teacher Resources

1
Teacher Resources

• Chapter 5 Color Teaching Transparency
• Ch 5.2
• Laboratory Black line Masters
• Electronic Book
• Skill Sheets

2
Chapter 5.2Energy Conservation

• CPO Science
• Integrated Physics Chemistry

3
Developing A Model

• Describe what happens as you ride a bike or drive
  a car up a hill
• Why is it harder to go up a hill and easier to go
  down the hill?
• How do you define energy?

4
Key Questions

• What is energy?
• How does energy behave?

5
Developing An Experiment

• What variables are there?
• Speed and location
• At what location do you think it will going the
  fastest?
• What material will we need?
• What data needs to be collected?
• Speed, How can we calculate speed?
• Diameter of the ball time through the photogate
• Location

6
Run The Experiment

• Set up the Roller coaster
• Tips
• Do a few trial runs before you start to record
  data to perfect your release method
• Make sure the photogate is up tight against the
  roller coaster bottom.

7
What Did You Learn?

• Where was the speed of the marble highest?
• Why is the speed the highest at lowest point on
  the roller coaster?
• Is there a relationship between height and the
  speed of the marbles?

8
Developing A Model

• Kinetic Energy vs. Potential Energy
• Where is the potential energy on the roller
  coaster?
• Where is the kinetic energy on the roller
  coaster?
• Is there a location where both kinetic energy and
  potential exist at the same time?
• How could you measure the potential kinetic
  energy?

9
Developing An Experiment

• What material will we need?
• What data needs to be collected?
• Speed
• Height

10
Run The Experiment

• Set up the Roller coaster
• Tips
• Read the procedure in the investigations manual
  very carefully
• Choose 12 different locations
• Do a few trial runs before you start to record
  data to perfect your release method
• Make sure the photogate is tight up against the
  roller coaster bottom.

11
What Did You Learn?

• What is the relationship between Height and
  Speed?
• Is it the same relationship between kinetic
  energy potential energy?

12
Summary

• What is energy?
• What are the types of energy?
• What is the law of conservation of energy?
• How is energy conserved on a roller coaster?