Download Radiant Energy originates from the motion of electrons within atoms

Big Ideas About Energy Changes (PP)
1. When does an Energy Transformation occur?
2. When does an Energy Transfer occur?
Examples of changes in Energy:
Humpty Dumpty
The Archer
Space Shuttle Blast-off
Bartock (Eyeball Toy)
Pull-Back Car
Flashlight
Marshmallow Afire
Big Ideas About Energy Conservation & Efficiency (PP)
Problem #1 – A 1.5 kg ball is held at a vertical height of 20 meters above the ground. How much Gravitational
Potential Energy does the ball have in this position? (Show all math formulas, calculations & units.)
Problem #2 – A car has a mass of 1000kg and is traveling at a velocity of 20 m/s (44 mi.hr). How much Kinetic
Energy does the car have?
Problem #3 – As the toy cart moves down the ramp what happens to its three types of energy?
Ek? _____________________ Eg? _____________________ TE? ________________________
Energy Efficiency of the Orange Car
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Two Categories of Energy
POTENTIAL ENERGY
___________________ Energy (Eg) the
energy due to position. A rock resting at the top
of a hill contains gravitational potential energy
because it has the potential to change its
position with respect to the ground.
_______________________ Energy is
energy stored in objects by the application of a
force that displaces and deforms the object. A
pulled object possesses elastic (Eel) potential
energy due to its stretched position. It then has
the potential to change its form back to its
initial form.
________________ Energy (Ec) is energy
stored within a substance by the bonds that join
atoms together. The substance has the ability to
undergo a change in its molecular structure.
__________________ Energy is energy
stored in the nucleus of an atom––the energy that
holds the nucleus together. The energy can be
released when the nuclei are combined (Fusion
– in the sun) or split apart (Fission – in a
power plant).
KINETIC ENERGY
__________________ Energy is energy
stored in the motion of a physical system. Kinetic
energy of an object can easily be transferred to
other objects.
____________________ Energy is the
movement of electrical charges through
some type of medium known as a conductor.
_______________ Energy originates from
the motion of electrons within atoms, also
known as electromagnetic energy. It travels in
transverse waves. Radiant energy includes visible
light, x-rays, gamma rays and radio waves.
______________ Energy (ET) is stored in
the motion of the molecules that make up an
object. The vibration of the molecules (small
changes in position), causes heat to be
produced.
__________________ Energy - molecules
move in rhythmic patterns known as waves.
This energy is transported through objects or
substances that have mass and take up space.
Examples include all types of sound.
Sound
(Mechanical)
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Two Categories of Energy (Teacher’s Copy)
KINETIC ENERGY
POTENTIAL ENERGY
Kinetic Energy (Ek) is energy stored in the
motion of a physical system. A moving object
possesses kinetic energy due to its change in
position. Kinetic energy of an object (physical
system) can easily be transformed to other
methods of energy storage/types of energy.
Gravitational Energy (Eg) is the energy due to
position. A rock resting at the top of a hill
contains gravitational potential energy because it
has the potential to change its position with
respect to the ground.
Electrical Energy is the movement of
electrical charges through some type of
medium known as a conductor.
Elastic Energy is energy stored in objects by the
application of a force that displaces and deforms
the object. An elastic (Ee) object that is pulled
possesses elastic potential energy due to its
stretched position with respect to its non-stretch
osition – it then has the potential to change its
form with respect to its initial form.
Radiant Energy originates from the motion of
electrons within atoms, also known as
electromagnetic energy. It travels in transverse
waves. Radiant energy includes visible light, xrays, gamma rays and radio waves.
Thermal Energy (ET) is stored in the motion
of the molecules that make up an object and is
connected to the microscopic structure of the
object.
The vibration of the molecules (small changes
in position), cause heat to be produced.
Acoustical Energy - molecules vibrate in
rhythmic patterns known as waves. This
energy is transported through objects or
substances that have mass and take up space,
never through empty space. Examples include all
types of sound.
Chemical Energy (Ec) is energy stored within
a substance by the bonds that join atoms together.
The substance has the ability to undergo a
change in its molecular structure (the
arrangement, or positioning, of atoms in the
molecules that make up the substance).
Nuclear Energy is energy stored in the nucleus
of an atom––the energy that holds the nucleus
together. The energy can be released when the
nuclei are combined or split apart. Nuclear
power plants split the nuclei of uranium atoms in
a process called fission. The sun combines the
nuclei of hydrogen atoms in a process called
fusion.
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