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Forms of Energy
All forms of energy fall under two categories:
1. ________________ ________________ - Stored energy and the
energy of position (gravitational).
2. ________________ ________________ - The energy of motion –
waves, eletrons, atoms, molecules, substances, anything moving!
Examples of Potential Energy (stored energy and energy of position):
A. ________________ ______________ is the energy stored in
the bonds of atoms and molecules. Biomass, petroleum, natural
gas, propane, coal, and food are examples of chemical energy.
B. _______________ ________________ is the energy stored in
the nucleus of an atom – the energy that holds the nucleus
together. The energy in the nucleus of a uranium atom is an
example of nuclear energy.
C. ___________ ___________________ _____________ is
energy stored in objects by the application of force.
Compressed springs and stretched rubber bands are examples of
stored mechanical energy.
D. ___________________________ ___________ is the energy of
place or position. Water in a reservoir behind a hydropower
dam is an example. A roller coaster sitting at the top of a hill
has a lot of gravitational potential energy.
Examples of Kinetic Energy (energy of motion):
A. ______________ _______________is the electromagnetic energy that
travels in transverse waves. Solar energy is an example of this.
B. ______________ ______________ or heat is the internal energy in
substances – the vibration or movement of atoms and molecules in
substances. Geothermal energy is an example of this.
C. ______________ is the movement of a substance from one place to
another. Wind and hydropower are examples of motion energy.
D. _______________ is the movement of energy through substances in
longitudinal waves.
E. ____________________ _____________________ is the movement
of electrons. Lightning and electricity are examples of electrical
energy.
REVIEW
All forms of energy fall under two categories:
1. Potential energy is _________ energy, or energy of _________________.
2.Kinetic energy is the energy of ____________ and involves the motion of
waves, electrons, atoms, molecules, substances, or anything moving.
Chemical energy, Nuclear energy, Stored mechanical energy, and
Gravitational energy are all forms of ___________________ energy.
Radiant energy, Thermal energy, Motion, Sound, and Electrical Energy
are all forms of _____________________ energy.
A roller coaster car is sitting still at the top of a big hill. It has
____________ energy. It starts moving down the hill, going faster and
faster. Now it has _________________ energy.
Figure it out!
Kinetic energy is equal to ½ the mass times the velocity squared. If a
bowling ball and a baseball are traveling at the same velocity, which has the
greater kinetic energy?
Why?
Two books of equal mass are sitting on a bookshelf. Which has greater
potential energy, the book on the top shelf or the book on the second shelf
down?
Why?