1. Potential and Kinetic Energy

2. What is energy? Energy is not a substance.
Although force and power are related to energy, they are not energy.
Energy is a measurable quantity.
Energy describes how much change can happen in a system.
Every interaction involves a transfer of energy.
Every energy transfer is evidence of an interaction.
There are different ‘types’ of energy.

3. How is energy divided?
ENERGY
Kinetic
Energy
Potential
Energy

4. Potential energy
Potential energy is energy that is stored and waiting to be used later.
There are different types of potential energy.

5. Gravitational Potential energy
Gravitational potential energy (G.P.E.) is one type of potential energy.
G.P.E. is energy due to (related to) an object’s position.
G.P.E. = mass x height x gravity

6. Kinetic energy
Kinetic energy (K.E.) is energy an object has due to (related to) its motion.
K.E. = .5(mass x speed2)

7. Marble roll review potential energy
Potential energy is stored energy.
The potential energy we are focused on is called ‘gravitational potential energy’ (the acceleration of gravity is factored into its quantitative value).
Potential energy is directly proportional to mass (the greater the mass, the greater the amount of potential energy).
Potential energy is directly proportional to height (the greater the height, the greater the amount of potential energy).

8. Marble roll review kinetic energy
Any moving object has kinetic energy.
The (relative) amount of kinetic energy an object contains is observable through the work (force and motion) it creates.
Kinetic energy is directly proportional to mass (the greater the mass, the greater the amount of kinetic energy).
Kinetic energy is directly proportional to speed.

9. Marble roll review summary Questions
Where is the G.P.E. greatest? Least?
Where is the K.E. greatest? Least?
What relationship do you notice between G.P.E. and K.E.?
How could you increase the amount of G.P.E.?
How could you increase the amount of K.E.?