The food humans eat contains potential energy.
True
False
Energy:
moves matter.
cannot be created or destroyed.
can be changed into different forms.
All of the choices are correct.
The greatest source of primary energy on Earth is:
wind energy.
solar energy.
geothermal energy.
fossil fuels.
Moving water is a primary energy source because it is naturally existing on Earth and it can be changed into other forms of energy.
True
False
The Law of Conservation of Energy states that objects positioned at greater heights have less potential energy than those objects on the surface of the Earth.
True
False
Which of the following types of energy is possessed by an object in motion?
potential energy
kinetic energy
GPE
All of the choices are correct.
Which object has the greatest GPE when positioned at the same height: an apple that weighs 4 ounces or a cherry that weighs 1 ounce?
the apple
the cherry
They have the same GPE.
Neither the apple nor the cherry has GPE.