Transcript What is a Scientist? - Cockeysville Middle School

Objective: To analyze the movement of a
pendulum in order to describe the
relationship between potential energy
and kinetic energy in moving objects.
CSI Note: What is Energy?
Drill:
1. Get a ditto from the SET.
2. Read and highlight, “What is Energy”.
3. Think of questions you now have.
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WHAT IS ENERGY?
Have you ever thought about.....why you are
able to get out of bed in the morning and come
to school? Why the alarm clock sounds in the
morning? How the toaster toasts bread? How
your car runs? How you run? Why your nose
runs? How your computer runs? How everything
runs? NO, you say? WHY NOT?????? Do you not
have enough energy? Funny, I said energy,
because that is the answer to all of the
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questions from above.
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Everything runs because of energy. In other
words, energy is the stuff that makes stuff do
stuff!!!!!! Or in proper scientific talk: the
ability to do work or cause change. Work
occurs when a force is acting over a distance. A
force is any push or pull.
In this investigation, you will examine and
analyze objects at rest and in motion in order to
describe the relationships that exist between the
two types of stuff that make stuff do stuff
(energy).
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Observe the pendulum that your teacher has
set up in front of the class.
Label the parts of the pendulum.
fixed point
string, rod, or bar
pendulum bob
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There are two basic types
of energy, kinetic and
potential.
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KINETIC
The word kinetic comes from the Greek
word kinetos which means "moving.”
Therefore, kinetic energy (K.E.) is
simply described as energy of motion. If
an object is moving, it has kinetic energy.
Two factors that affect the amount of
kinetic energy an object has are mass
and velocity (speed).
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POTENTIAL
The other basic type of energy is potential
energy (P.E.). Potential energy is the opposite of
kinetic energy. Potential energy is energy that
exists even when an object is at rest. It can be
simply described as stored energy or energy
that has the potential to do work. Potential
energy can be the result of an object's position,
shape, or chemical make-up. Kinetic energy is
the result of potential energy being converted to
action.
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A specific type of potential energy that
describes energy of position is known as
gravitational potential energy (GPE).
Potential energy can be stored in any object
just because it occupies a higher position.
The higher an object is the more GPE it has.
The kinetic energy resulting from the
conversion of gravitational potential energy
to an object's movement is readily visible.
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Furthermore, a simple relationship exists.
A falling object has its greatest amount of
kinetic energy when it is traveling its
fastest. It has the greatest amount of
gravitational potential energy when it is
at its highest point. An object can have
both kinetic energy and potential energy
at the same time.
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Homework:
In your Log Book write 5 examples of
kinetic energy and 5 examples of potential
energy.
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Objective: To analyze the movement of a
pendulum in order to describe the
relationship between potential energy
and kinetic energy in moving objects.
CSI Note: What is Energy?
Drill: 1. Take out yesterday’s ditto and your
homework.
2. Star your best example for both
potential and kinetic energy.
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Name the two types of energy displayed
by the pendulum.
KINETIC ENERGY (Energy of motion)
POTENTIAL ENERGY (Stored energy)
Discussion of HW Answers (tennis ball game)
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BRAIN POP
Kinetic Energy
Potential Energy
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At what points is the potential energy the
greatest?
At what point(s) is the kinetic energy the
greatest?
C.
A.
B.
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DRY ERASE BOARDS
1.
2.
3.
4.
5.
6.
What is kinetic energy?
What is potential energy?
Give an example of potential energy?
Name 3 types of potential energy.
Give an example of kinetic energy?
What key word is linked to potential
energy?
7. Can an object have both forms of energy
at the same time?
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Discussion Question?
Can an object have both potential
and kinetic energy at the same time?
Can a moving object still have height?
Can a moving object still be stretched
out or compressed?
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SUMMARY NOTES
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Homework:
Review Energy Summary
Notes…Hmmm
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