Physical science ch13 kinetic and potential energy
Which best describes what is happening when a moving car comes to a stop?
KE is decreasing and PE is increasing
The energy possessed by a moving car would best be described as ________.
Kinetic
A moving object always has
Kinetic energy
Which of these is an example of mechanical energy? Photosynthesis Nuclear energy Chemical energy Kinetic energy
Kinetic energy
A child standing on a skateboard at the top of the hill would have
Maximum potential energy
The amount of work an object has as potential and kinetic energy is called
Mechanical energy
The sum of an object's kinetic and potential energies is
Mechanical energy
Energy that lies at the atomic level is
Non mechanical
The primary source of the sun's energy is
Nuclear fusion
The sun gets energy from nuclear reactions and is called
Nuclear fusion
A book sitting high atop a shelf would have _______ ______.
Potential energy
What is kinetic energy?
The energy of motion
Who has more potential energy, a skier on top of a hill or a skier halfway down the hill?
The skier on top of the hill
The energy associated with atomic bonds is chemical energy. (True or false)
True
When would the kinetic energy in a ball become potential energy?
When the ball is rolled up a hill and stops at the top
Which one of the following situations involves potential energy changing into kinetic energy?
A child kicking a ball that is standing still
Energy cannot be created or
Destroyed
Electric energy results from the location of charged particles in
Electric fields
Light energy travels from the sun to the earth in the form of
Electromagnetic waves
The measure of the ability to do work is
Energy
The decrease of kinetic energy will decrease the non mechanical energy of the object. (True or false)
False
Gravitational potential energy depends on mass, gravitational acceleration, and ______.
Height
The total (usable and unusable) energy in any process
Remains the same
What is potential energy?
Stored energy
Chemical reactions involving potential energy are called
Chemical energy
Energy due to motion
Kinetic energy
Living things get energy from the sun to make food is known as
Photosynthesis
As a marble false to the ground, _____ energy is converted to kinetic energy.
Potential
Energy an object has due to position or shape
Potential