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 Write the definition of Transform
 Write the definition of Transfer
Energy
MODULE I  UNIT 1
Introduction to
Energy
MODULE I  UNIT 1 
LESSON 1 - EXPLORATION1
ANALYZING ENERGY
What is Energy?
Energy is the ability to
do work or to cause
changes in matter.
Examples on Energy
Objects move because energy
is added to them.
For example:-
 Traditional wind-up toy
 A crane lifting steel beams to
construct a skyscraper.
The motion of the toy is the result
of an initial input of energy from
the user turning the key.
ENERGY and WORK
 In both a wind-up toy and a crane, a force
applied to an object results in its movement
over a distance.
 The amount of energy required to move a
large steel beam is much greater than the
energy needed to move a wind-up toy.
WORK
Work is the transfer of energy to an
object by a force that causes the object
to move in the direction of that force.
Work ( W ) can be calculated using the
formula:-
W = Fd
Where;
 F is the force applied
to the object, in units
of newtons (N)
 d is the distance the
object moved, in
units of meters (m)
 W is the work, in units
of joules (J).
Robot 1
Robot 2
Do Now
1- What is Energy?
Give 2 Examples on Energy
Robot 3
Robot 4
Classwork
Potential and Kinetic
Energy
The more massive
the object or the
faster it is traveling,
the more energy it
has.
oThe energy of
motion is called
Kinetic Energy
(KE).
Do Now
1- Give 3 Examples on kinetic
Energy
Examples on
Kinetic Energy
 A person walking
 A moving football
 Food falling from the table
 Pencil moving inside of the
bag
 Roller skating
And many more examples..
o An object may also
have stored
energy based on its
relative position known
as Potential energy
(PE).
o The energy stored in
an object due to
its physical position
and the force of
gravity acting on it is
called gravitational
potential energy
(GPE).
1. Potential energy can be transformed into kinetic
energy and back again.
 Think about a rolling marble. If the marble is at the top of a
ramp, it has gravitational potential energy because of its
position above the floor.
2. As the marble rolls down the ramp, it gains
kinetic energy. At the bottom, nearly all of the
potential energy has been transformed into
kinetic energy.
3. That kinetic energy can be transformed back
into potential energy if the marble continues up
another ramp.
Watch video
Examples on Potential Energy
A car that is
parked at the
top of a hill.
A book on a
table before
it falls.
A child at the
top of a slide.
Ripe fruit
before it falls.
Water inside
a water
bottle.
And many
more
examples..
Classwork
Review Question 1
What is the work of an object that
had a force of 23 N applied to it
and moved a distance of 4 m?
Review
Question 2
An object moved a distance
of 8 m after a force equal to
290 N was applied to it. What
is the work done?
Review
Question 3
FIND THE WORK THAT A CAR
DID IF THE FORCE IT APPLIED
WAS 45 N AND IT MOVED
200 M.
Review
Question 4
A ball travels a distance of 32
m when a force of 158 N was
applied to it. What was the
work done by the ball?
Review
Question 5
An airplane travels a
distance of 7300 m with a
force of 90 N was applied to
it. What was the work done
by the airplane?
Review
Question 6
Potential energy is the stored
energy of the object due to
its position. True or False?
Review Question 7
 A man is pushing a box on a flat
ground for a distance of 3 meters.
Calculate the force applied by a
man to the box, knowing that the
amount of work done by the man
is 1200 J.
Review Question 8
An apple hanging from a tree
is an example of kinetic
energy. True/ False.
Do Now
1- Give 3 Examples on potential
Energy
Forms of Energy
There are different forms of
energy. Here are some
examples;-
1. Mechanical Energy
2. Thermal Energy
3. Electromagnetic
Energy
4. Sound Energy
5. Electrical Energy
6. Elastic Energy
7. Chemical Energy
8. Nuclear Energy
Mechanical
Energy
 The mechanical energy of an object is
the sum of the objects kinetic energy
and potential energy.
 In other words, mechanical energy is the
energy of an object due to its motion
and its position.
 An objects mechanical energy can be
all potential energy, all kinetic energy, or
a combination of potential and kinetic
energy.
Thermal Energy
 Thermal energy is the total kinetic
energy of all the particles that
make up an object.
 Particles move faster at higher
temperatures than at lower
temperatures.
 The faster the particles in an object
move, the more thermal energy
the object has.
 Also, the more particles an object
has, the more thermal energy it
has.
Electromagnetic
Energy
 Electromagnetic energy is the
kinetic energy of electromagnetic
waves, which include visible light,
x-rays, and microwaves.
 X-rays are high-energy waves
used by doctors and dentists
to look at your bones.
 Microwaves can be used to
cook food or to transmit cell
phone calls.
Sound
Energy
 Sound energy is kinetic energy caused by
the vibration of particles in a medium, such
as steel, water, or air.
 When you pluck the strings of a guitar, they vibrate,
producing sound. These vibrations travel outward from
the guitar, and transfer energy to air around the
strings. As the particles of the air vibrate, they transfer
the sound energy to other particles. The vibrating
particles do work on special structures in your ear that
allow you to interpret the vibrations as sound.
Electrical Energy
 Electrical energy is the kinetic
energy of moving electric
charges.
 The more electric charges
that are moving, the more
electrical energy is carried
by the wire.
 Electrical energy can
occur in nature in the form
of lightning and smaller
static electricity shocks.
Elastic
Energy
 Elastic energy is the potential mechanical
energy stored in an object when work is
performed to change its shape.
 You can observe this energy when you stretch a
rubber band or squeeze a spring.
Chemical Energy
 Chemical energy is the
potential energy stored in
the chemical bonds of
substances.
 Sources of chemical
energy include
batteries, fuels, and
matches. The foods
you eat also contain
chemical energy.
Nuclear
Energy
 Nuclear energy is the potential energy
stored in the nucleus of an atom.
 When an atoms nucleus breaks apart
or when the nuclei of two small atoms
join together, energy is released.
 The energy given off by the sun
comes from nuclear energy. The suns
light and heat come from these
reactions. Without nuclear energy
from the sun, life would not exist on
Earth.
Do Now
WHAT IS THE FORMULA TO
SOLVE FOR WORK?
Energy Transfer and
Transformation
What is the difference
between energy transfer
and energy transformation?
When you roll a ball across a surface, you
know that the ball has kinetic energy because
it is moving. What will happen if the rolling ball
then hits another ball at rest?
The ball that is at rest will also start
rolling, which means that it now
has kinetic energy, as well. This is
an example of energy transfer.
When two objects collide, each
exerts a force on the other that
can cause energy to pass from
one to the other. In this case,
kinetic energy is transferred from
one ball to the other.
Energy Transfer
The two balls will also
make a noise as they
collide, indicating that
sound energy has been
produced. This is an
example of an energy
transformation, or the
change of one form of
energy into another.
Any form of energy can
turn into another form of
energy in an energy
transformation.
Energy Transformation
Energy Transfer and Transformation
examples
All forms of transportation require energy transformations:
1. Riding a bicycle depends on the transformation of
Chemical energy
within your body into
Mechanical energy
from your muscles,
which
is transferred to
The bike pedals and
the rest of the
bikes gear system.
2. Traveling by car or bus requires the transformation of
Chemical energy from fuel or
a battery into
Thermal and mechanical
energy to power its engine,
Which transfers mechanical
energy to the drive chain.
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Module I - Unit 1 - Lesson 1 Introduction to Energy.pptx

  • 1. Do Now Write the definition of Transform Write the definition of Transfer
  • 3. Introduction to Energy MODULE I UNIT 1 LESSON 1 - EXPLORATION1 ANALYZING ENERGY
  • 4. What is Energy? Energy is the ability to do work or to cause changes in matter.
  • 5. Examples on Energy Objects move because energy is added to them. For example:- Traditional wind-up toy A crane lifting steel beams to construct a skyscraper. The motion of the toy is the result of an initial input of energy from the user turning the key.
  • 6. ENERGY and WORK In both a wind-up toy and a crane, a force applied to an object results in its movement over a distance. The amount of energy required to move a large steel beam is much greater than the energy needed to move a wind-up toy.
  • 7. WORK Work is the transfer of energy to an object by a force that causes the object to move in the direction of that force. Work ( W ) can be calculated using the formula:- W = Fd
  • 8. Where; F is the force applied to the object, in units of newtons (N) d is the distance the object moved, in units of meters (m) W is the work, in units of joules (J).
  • 11. Do Now 1- What is Energy? Give 2 Examples on Energy
  • 16. The more massive the object or the faster it is traveling, the more energy it has. oThe energy of motion is called Kinetic Energy (KE).
  • 17. Do Now 1- Give 3 Examples on kinetic Energy
  • 18. Examples on Kinetic Energy A person walking A moving football Food falling from the table Pencil moving inside of the bag Roller skating And many more examples..
  • 19. o An object may also have stored energy based on its relative position known as Potential energy (PE). o The energy stored in an object due to its physical position and the force of gravity acting on it is called gravitational potential energy (GPE).
  • 20. 1. Potential energy can be transformed into kinetic energy and back again. Think about a rolling marble. If the marble is at the top of a ramp, it has gravitational potential energy because of its position above the floor. 2. As the marble rolls down the ramp, it gains kinetic energy. At the bottom, nearly all of the potential energy has been transformed into kinetic energy. 3. That kinetic energy can be transformed back into potential energy if the marble continues up another ramp.
  • 22. Examples on Potential Energy A car that is parked at the top of a hill. A book on a table before it falls. A child at the top of a slide. Ripe fruit before it falls. Water inside a water bottle. And many more examples..
  • 24. Review Question 1 What is the work of an object that had a force of 23 N applied to it and moved a distance of 4 m?
  • 25. Review Question 2 An object moved a distance of 8 m after a force equal to 290 N was applied to it. What is the work done?
  • 26. Review Question 3 FIND THE WORK THAT A CAR DID IF THE FORCE IT APPLIED WAS 45 N AND IT MOVED 200 M.
  • 27. Review Question 4 A ball travels a distance of 32 m when a force of 158 N was applied to it. What was the work done by the ball?
  • 28. Review Question 5 An airplane travels a distance of 7300 m with a force of 90 N was applied to it. What was the work done by the airplane?
  • 29. Review Question 6 Potential energy is the stored energy of the object due to its position. True or False?
  • 30. Review Question 7 A man is pushing a box on a flat ground for a distance of 3 meters. Calculate the force applied by a man to the box, knowing that the amount of work done by the man is 1200 J.
  • 31. Review Question 8 An apple hanging from a tree is an example of kinetic energy. True/ False.
  • 32. Do Now 1- Give 3 Examples on potential Energy
  • 34. There are different forms of energy. Here are some examples;- 1. Mechanical Energy 2. Thermal Energy 3. Electromagnetic Energy 4. Sound Energy 5. Electrical Energy 6. Elastic Energy 7. Chemical Energy 8. Nuclear Energy
  • 35. Mechanical Energy The mechanical energy of an object is the sum of the objects kinetic energy and potential energy. In other words, mechanical energy is the energy of an object due to its motion and its position. An objects mechanical energy can be all potential energy, all kinetic energy, or a combination of potential and kinetic energy.
  • 36. Thermal Energy Thermal energy is the total kinetic energy of all the particles that make up an object. Particles move faster at higher temperatures than at lower temperatures. The faster the particles in an object move, the more thermal energy the object has. Also, the more particles an object has, the more thermal energy it has.
  • 37. Electromagnetic Energy Electromagnetic energy is the kinetic energy of electromagnetic waves, which include visible light, x-rays, and microwaves. X-rays are high-energy waves used by doctors and dentists to look at your bones. Microwaves can be used to cook food or to transmit cell phone calls.
  • 38. Sound Energy Sound energy is kinetic energy caused by the vibration of particles in a medium, such as steel, water, or air. When you pluck the strings of a guitar, they vibrate, producing sound. These vibrations travel outward from the guitar, and transfer energy to air around the strings. As the particles of the air vibrate, they transfer the sound energy to other particles. The vibrating particles do work on special structures in your ear that allow you to interpret the vibrations as sound.
  • 39. Electrical Energy Electrical energy is the kinetic energy of moving electric charges. The more electric charges that are moving, the more electrical energy is carried by the wire. Electrical energy can occur in nature in the form of lightning and smaller static electricity shocks.
  • 40. Elastic Energy Elastic energy is the potential mechanical energy stored in an object when work is performed to change its shape. You can observe this energy when you stretch a rubber band or squeeze a spring.
  • 41. Chemical Energy Chemical energy is the potential energy stored in the chemical bonds of substances. Sources of chemical energy include batteries, fuels, and matches. The foods you eat also contain chemical energy.
  • 42. Nuclear Energy Nuclear energy is the potential energy stored in the nucleus of an atom. When an atoms nucleus breaks apart or when the nuclei of two small atoms join together, energy is released. The energy given off by the sun comes from nuclear energy. The suns light and heat come from these reactions. Without nuclear energy from the sun, life would not exist on Earth.
  • 43. Do Now WHAT IS THE FORMULA TO SOLVE FOR WORK?
  • 45. What is the difference between energy transfer and energy transformation?
  • 46. When you roll a ball across a surface, you know that the ball has kinetic energy because it is moving. What will happen if the rolling ball then hits another ball at rest? The ball that is at rest will also start rolling, which means that it now has kinetic energy, as well. This is an example of energy transfer. When two objects collide, each exerts a force on the other that can cause energy to pass from one to the other. In this case, kinetic energy is transferred from one ball to the other. Energy Transfer
  • 47. The two balls will also make a noise as they collide, indicating that sound energy has been produced. This is an example of an energy transformation, or the change of one form of energy into another. Any form of energy can turn into another form of energy in an energy transformation. Energy Transformation
  • 48. Energy Transfer and Transformation examples All forms of transportation require energy transformations: 1. Riding a bicycle depends on the transformation of Chemical energy within your body into Mechanical energy from your muscles, which is transferred to The bike pedals and the rest of the bikes gear system.
  • 49. 2. Traveling by car or bus requires the transformation of Chemical energy from fuel or a battery into Thermal and mechanical energy to power its engine, Which transfers mechanical energy to the drive chain.