1. Potential and Kinetic Energy

2. How is all energy divided?
Potential
Energy
Kinetic
Energy
Gravitation
Potential
Energy
Elastic
Chemical

3. Energy is stored energy.
Potential Kinetic
Potential
Energy is stored energy.
Water behind a dam
Hammer over head
Food on the plate
energy of motion, the form capable of doing work
Flowing water
A falling hammer
Electrons regenerating ATP in a bio’l cell

4. What is Potential Energy?
Energy that is stored and waiting to be used later

5. Types and Forms of Energy
Gateway To Technology
Unit 3– Lesson 3.1– Investigating Energy
Potential Energy
The energy in matter due to its position or the arrangement of its parts
The two types of energy are kinetic and potential.
Various forms of Potential energy include:
Elastic – A trampoline resists being stretched out of shape
Electrical – A battery operated flashlight converts electrical potential energy into light when turned on
Gravitational – Like an apple falling from a tree
Chemical – Energy in food is used by our bodies to move; in a lighted firecracker it is used to make a loud sound and scatter pieces of the firecracker

6. What is Gravitational Potential Energy?
Potential energy due to an object’s position
P.E. = mass x
height x gravity
Don’t look down, Rover!
Good boy!

7. What is Elastic Potential Energy?
Potnetial energy due to compression or expansion of an elastic object.
Notice the ball compressing
and expanding

8. What is Chemical Potential Energy?
Potential energy stored within the chemical bonds of an object

9. What is Kinetic Energy? Energy an object has due to its motion
K.E. = .5(mass x speed2)

10. Types and Forms of Energy
Gateway To Technology
Unit 3– Lesson 3.1– Investigating Energy
Kinetic Energy
Energy of a moving object
The two types of energy are kinetic and potential.
Increase students’ awareness of kinetic energy by having them:
-- Identify objects in motion around them
-- Compare how various objects move (walk, roll, jump, etc.)
-- Analyze whether stationary objects are really moving (i.e., a plant)

11. What is Mechanical Energy?
Energy due to a object’s motion (kinetic) or position (potential).
The bowling ball has mechanical energy.
When the ball strikes the pins, mechanical energy is transferred to the pins!

13. Examples of Mechanical Energy

14. Potential or Kinetic Energy: Do You Know the Difference?
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15. Which energy type? An airplane circling in preparation for a landing
Potential Energy
Kinetic Energy
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16. A pile of coal that will be used for fuel
Which energy type?
A pile of coal that will be used for fuel
Potential Energy
Kinetic Energy
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17. A flag blowing in the wind
Which energy type?
A flag blowing in the wind
Potential Energy
Kinetic Energy
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18. A hatbox stored on the top shelf of a closet
Which energy type?
A hatbox stored on the top shelf of a closet
Potential Energy
Kinetic Energy
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19. Which energy type? An unlit firecracker Potential Energy
Kinetic Energy
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20. A hammer held above a nail
Which energy type?
A hammer held above a nail
Potential Energy
Kinetic Energy
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21. A marble rolling down the aisle of your science classroom
Which energy type?
A marble rolling down the aisle of your science classroom
Potential Energy
Kinetic Energy
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22. Which energy type? A new car battery Potential Energy Kinetic Energy
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23. Glucose stored in plants as a result of photosynthesis
Which energy type?
Glucose stored in plants as a result of photosynthesis
Potential Energy
Kinetic Energy
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24. An ant crawling across a sandwich at a picnic
Which energy type?
An ant crawling across a sandwich at a picnic
Potential Energy
Kinetic Energy
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25. A tennis racket about to crash down on a ball near the net
Which energy type?
A tennis racket about to crash down on a ball near the net
Potential Energy
Kinetic Energy
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26. Which energy type? An eyelash fluttering Potential Energy
Kinetic Energy
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27. Which energy type? Energy at rest Potential Energy Kinetic Energy Home
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28. The release of stored energy
Which energy type?
The release of stored energy
Potential Energy
Kinetic Energy
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29. Which energy type? Energy of motion Potential Energy Kinetic Energy
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30. A dam holding back a river’s water
Which energy type?
A dam holding back a river’s water
Potential Energy
Kinetic Energy
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31. A mousetrap set and ready to spring
Which energy type?
A mousetrap set and ready to spring
Potential Energy
Kinetic Energy
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32. Super Job! You are correct!
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33. A basketball flying toward the basket
Which energy type?
A basketball flying toward the basket
Potential Energy
Kinetic Energy
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34. A sled released at the top of a snowy hill
Which energy type?
A sled released at the top of a snowy hill
Potential Energy
Kinetic Energy
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35. All clipart courtesy of Microsoft Clipart Gallery. www.microsoft.com
Congratulations! You have reached the end of your energy journey. Job well done!
The End

36. 1. Daniel designed the above house
 1. Daniel designed the above house. However, when he built a model of the house, he realized that the weight of the second story made the ceiling of the first story sag. What could Daniel do to fix this problem?
A. add columns to the design of the first story to hold up the weight of the second story
B. add more rooms to the second story
C. make the outside walls stronger
D. put an elevator in the house rather than a stair case
2. Cho is using technological design to build a clock based on the apparent motion of the Sun. Which of the following would be the best measure of success for Cho's clock?
A. The time shown on Cho's clock is eleven hours ahead of the actual time.
B. Cho's clock is small enough to be worn as a wrist watch.
C. The time according to Cho's clock is very similar to the actual time.
D. Cho's clock works even at night.
3. Sandra is creating a new piece of technology. Her teacher has provided the following steps for designing new technology:
1. Identify a problem or need
2. Design a solution or a product
3. Implement the chosen design
4. Evaluate the solution or the product
Which of the following should Sandra do during the evaluation step?
A. generate ideas on how to solve the problem efficiently
B. build and test the solution or product
C. gather information on the problem and possible solutions
D. determine if the new solution or product solved the problem