- Energy can be neither created nor destroyed by ordinary means.
- Energy can be transformed from one form to another.
- The total amount of energy is the same before and after any energy transformation.
- Energy TRANSFER is the movement of energy from one object to another object.
- Example: A cup of hot tea has thermal energy. Some of this thermal energy is transferred to the particles in cold milk, in which you put to make the coffee cooler.
- Single Transformations
- Occur when one form of energy needs to be changed into another to get work done.
- Multiple Transformations
- Occur when a series of energy transformations are needed to do work
- An object’s energy can be:
- As velocity increases kinetic energy increases and potential energy decreases
- As velocity decreases kinetic energy decreases and potential energy increases
- WHAT IS THE TYPE OF RELATIONSHIP KE AND PE HAVE? Inverse relationship
- As you move up to the first hill on a roller coaster the distance between the coaster and the Earth increases, resulting in an increase of gravitational potential energy.
- At the top of the first hill you have the maximum Gravitational Potential Energy.
- As you begin your trip down the hill you increase your speed resulting in a transformation from potential energy to kinetic energy.
- At the bottom of the hill right before it goes back upward the kinetic energy is maximum, but the potential energy is minimum.
- As it starts to move up the next hill or loop KE is converted back into GPE.
Parent Tip: Review the logic above to help your child master the concept of potential and kinetic energy worksheet 5th grade.
