The form of energy associated with the position and motion of an object is called what?
mechanical energy
100
What is energy transformation?
A change from one form of energy to another.
100
What is an example of a fossil fuel?
coal, petroleum, or natural gas
100
The rate at which energy is transferred is called what?
Power
200
Energy is measured in what unit?
Joules
200
How do you calculate mechanical energy?
ME = PE + KE
200
When you rub your hands together on a cold day, you use friction to convert what kind of energy to another type of energy?
mechanical to thermal energy
200
Where do fossil fuels get the energy?
Sun
200
Potential energy related to an object's height is called what?
Gravitational potential energy
300
What are the two basic kinds of energy?
Potential and kinetic energy.
300
Energy stored in the nucleus of an atom is called what?
nuclear energy
300
Niagara Falls is an example what kind of energy transformation?
Potential to kinetic energy
300
What is the type of energy stored by fossil fuels.
chemical energy
300
True or False? The greater an objects weight or height, the greater its gravitational potential energy?
True
400
What is the energy associated with motion?
Kinetic energy
400
True or False?
A ball thrown into the air has its greatest kinetic energy as it reaches the highest point in its path?
False
400
A large truck and a small car are moving at the same speed. The truck has greater kinetic energy because what is greater?
Mass
400
Visible light is an example of what?
What is electromagnetic energy.
400
Unlike kinetic energy, potential energy is conserved or stored?
stored
500
How do you calculate Kinetic energy?
KE= 1/2 x mass x velocity^2
500
How does electromagnetic waves travel and with what two properties?
waves, electrical and magnetic
500
Explain the energy transformation in a pendulum.
At the highest point of the swing, it has greatest potential energy and at the bottom, it has the greatest kinetic energy.
500
Describe the steps in which a power plant transforms the energy in fossil fuels to electrical energy.
Chemical to thermal when it burns a fossil fuel to steam. Steam turns turbines (thermal to mechanical). Turbines turn generators that supply electrical energy.