Definitions
The ability to do work.
What's the definition of kinetic energy?
The energy objects possess due to their motion.
What's the definition of renewable energy resource?
A resource that is easily replaced by natural methods.
What's the definition of mechanical energy?
The sum of any kinetic energy and any forms of potential energy in a system.
What are the two general forms of energy?
Kinetic and potential.
What's the definition of a closed system?
What's the definition of potential energy?
The stored energy that can be used later.
What's the definition of nonrenewable energy resource?
A resource that is not replaced naturally, at least not on a human time-scale.
How does the total amount of energy remain constant?
It can change forms/be transferred.
How do you increase an objects kinetic energy?
Increase the object's mass.
What's the definition of fossil fuels?
Nonrenewable resources that are believed to be formed from the remains of plants and animals from the past.
What does the equation KE=1/2mv2 ?
Kinetic energy.
Coal, oil, and natural gas are example of?
Nonrenewable energy resources.
What happens when a ball reaches its highest point?
For a fraction of a second the ball has its max amount of gravitation potential energy(GPE), but no kinetic energy.
What is a joule?
A unit that measures how much work is done.
What's the definition of nuclear energy?
What does the equation GPE=mgh?
Gravitational Potential Energy.
Which form of energy represents 10% of the world's energy?
Nuclear energy.
What happens during a thrown ball's descent?
The gravitational potential energy(GPE) is transformed into kinetic energy.
What percentage of energy comes from nonrenewable resources?
80%.
What's the definition of energy transformations?
When energy changes from one type to another.
What's the definition of elastic potential energy(EPE)?
The energy that is stored when something is stretched slightly from its resting position.
What are the examples of renewable resources?
Biomass, geothermal, hydroelectric, solar, tidal, and wind.
What happens when a descending ball hits the ground?
All of the ball's gravitational potential energy(GPE) has been converted into kinetic energy
Several serious accidents have happened, and large amounts of radioactive contamination have been released into the environment.