Energy Transformations
What is the process of saving up or storing energy?
Potential energy.
The point in a pendulum's swing where KE is the greatest
lowest point of the swing
What is the process of spending energy or energy in motion.
Kinetic energy.
List 3 renewable energy resources
Biomass, hydropower, geothermal, wind and/or solar.
The point of the roller coaster car where PE is its greatest
Top of the tallest hill
A hungry football player eating a large sandwich and then going to practice
Chemical energy -> mechanical energy
Gravitational potential energy depends on what 2 factors?
height and mass (or weight)
this type of energy is caused by vibrations in a medium
sound energy
List 3 Non-Renewable energy resources
Petroleum (oil), coal, natural gas, uranium and/or propane.
The speed at which a pendulum is going when potential energy is at its max
0 m/s (highest point of the pendulum's swing)
Using a solar-powered calculator.
EM energy -> electrical energy
Kinetic energy depends on what 2 factors?
mass and speed
This type of energy is generated by a force - a push or a pull -- that causes an object to move
Mechanical energy.
Define work and tell the units it is measured in.
Work is when a force moves an object a certain distance. Work is measured in Joules (J)
The point of a roller coaster car when KE is its greatest
Bottom of the tallest hill
a nuclear power plant generates electricity for the surrounding towns
nuclear energy -> thermal energy -> mechanical energy -> electrical energy
The sun is an example of this type of energy (name more than one).
Heat, EM (light), Nuclear
Define the Law of Conservation of Energy.
Energy can be not be created or destroyed, but can change forms.
If the total energy in a system is 40 J, and at a certain point PE = 10 J, what does KE equal?
30 J (40 J - 10 J)