1. PENGY’S JOURNEY
down the hill

2. What happens when Pengy sleds down the hill?

3. What kind of energy does Pengy have when he starts at the top of the hill?
Gravitational potential energy
- energy stored in an
object when it is above the ground
Pengy has the maximum G.P.E on the top of the hill as he is at the highest point.

4. Pengy has maximum kinetic energy as he is at his MAXIMUM SPEED.
What kind of energy does Pengy have at the bottom of the hill at maximum speed?
Kinetic Energy
the energy of movement
the faster an object moves, the more kinetic energy it has
Pengy has maximum kinetic energy
as he is at his MAXIMUM SPEED.

5. Does Pengy have potential energy at the bottom of the hill?
No, because he is not at a height above the ground.

6. What happened to the potential energy at the top of the hill?
How does this happen?
Let us learn more about it!
It all transformed to kinetic energy!

7. Energy can neither be created nor destroyed
Energy can neither be created nor destroyed. It can only be converted from one form to another.

8. Can you draw an energy flow diagram for Pengy?
Potential Energy
At the top
Kinetic Energy
At the bottom

9. Form of potential energy
Example 1
Form of potential energy

10. Example 2

11. Draw the longest energy flow diagram that you can!

12. How well do you know your energy flow diagrams?1 2 3 4 5 6 7 8 9 10 11 12