Energy

Energy

Forms and Transfer

Multiple Choice

Which type of energy has to do with objects in motion?

• Potential

• Kinetic

Forms of Energy

• Potential Energy: stored energy (due to an object's position or condition)

• Kinetic Energy: energy of motion

• Law of Conservation of Energy: Energy is not created or destroyed, only transferred/changed.

Multiple Select

Lightning is an example of _______________ energy.

• Electrical

• Kinetic

• Potential

• Chemical

Multiple Select

Food is an example of __________ energy.

• Kinetic

• Thermal

• Chemical

• Potential

Multiple Select

Melting ice cream is an example of _________________ energy.

• Thermal

• Potential

• Electric

• Kinetic

Multiple Select

A leaping frog is an example of ______________ energy.

• Potential

• Kinetic

• Mechanical

• Electromagnetic

Our Energy Skate Park assignment explores a few things:

• The relationship between Kinetic, Potential, and Thermal energy

• How mass influences speed

• How friction influences energy levels

How to increase potential energy

There are 2 ways to increase the potential energy of an object in relation to gravity.

-Increase the object's height.

-Increase the object's mass.

Poll

Which has the most potential energy?

• A

• B

• C

• D

Kinetic Energy

The amount of Kinetic energy an object has is related to to 2 factors.

- Mass of the object

- Speed of the object

Multiple Select

If a football player wants to become better at tackling by increasing their kinetic energy, how can the player do this?

• Increasing their height

• Decreasing their speed

• Increasing their mass

• Increasing their speed

Potential and Kinetic Energy

Notice that as the kinetic energy increases the potential energy decrease.

When the coaster goes back up the hill the energy is converted back to potential energy.

Total Energy

• the sum of all energy in a system

• kinetic + potential + thermal = total energy

Open Ended

The Law of Conservation of Energy states "Energy is not created or destroyed, only changed." How does the relationship between potential, kinetic, and thermal energy in this image illustrate this?

Friction:

• The resistance to motion of one object moving relative to another

Open Ended

How does friction affect the total energy of the skater in the Energy Skate Park assignment?