Potential & Kinetic Energy Notes Quizizz

Potential
and Kinetic
Energy

3

Explaining Kinetic and Potential Energy

• Every object has energy

associated with it.

• That energy can be due to

the position of the object,
the object’s motion, the
chemical bonds that make up the object, or many other
factors.

• Identifying the types and forms of energy that an object has

can help you model the behavior of the object.

Mod I Unit 1 Lesson 2

4

Kinetic and Potential Energy of Objects

• The energy in an object or

system of objects may be
either kinetic or potential
energy, or both.

• The ball in the picture has

both kinetic and potential
energy.

• The ball is moving, so it has kinetic energy.

• The ball is above the ground, so it has potential energy.

Mod I Unit 1 Lesson 2

7

Analyzing Kinetic and Potential Energy

Mod I Unit 1 Lesson 2

• The energy of an object

depends on many factors.

• Different types and forms

of energy are affected by
different factors.

• Kinetic energy depends on the mass

and speed of an object.

• Gravitational potential energy depends on the mass of an object,

but also on its height above the ground.

Kinetic
Energy

●
Energy an object has due to its motion

●
Affected by mass and speed

Potential Energy and Kinetic Energy

8

Kinetic Energy

• Whenever an object is moving,

it has the ability to do work.

• For instance, imagine a

baseball bat being swung. If a
bat hits a ball, the ball will move.

• The swinging bat has the ability to apply a force on another

object and move that object in the direction of the force.

• This is known as doing work on the object.

• Every moving object has the ability to do work, so every

moving object has kinetic energy.

• Kinetic energy is the energy associated with motion.

Mod I Unit 1 Lesson 2

10

Mass, Speed, and Kinetic Energy

Mod I Unit 1 Lesson 2

• The kinetic energy of an

object depends on both
the mass and the speed of
the object.

• Kinetic energy is the energy due to

motion.

• An object that is moving more quickly will have more

kinetic energy than an identical object moving more slowly.

• Increasing an object’s mass will also increase its kinetic

energy.

Kinetic Energy

• The amount of kinetic energy is
determined by its speed and its
mass.

•Increasing the speed or mass
of an object increases its
kinetic energy.

•Changing speed causes the

kinetic energy to increase more
than changing mass does.

Multiple Choice

The ability to do work by applying force is called

• work

• energy

• force

• net force

Multiple Choice

Which letter shows where kinetic energy is at is highest point?

• X

• Y

• W

• Z

Multiple Choice

Where is kinetic energy at its minimum?

• Z

• W

• X

• Y

Multiple Choice

Kinetic energy depends on_________ and _________.

• speed and mass

• speed and height

• height and mass

• energy and height

Potential
Energy

●

Energy stored in an object due to its position or shape

●

Two types:

○

Elastic: an object that is stretched or compressed, waiting
to be released, such as a rubber band or a coiled spring

○

Gravitational: related to an object’s height and potential
to be pulled back to earth’s surface by gravity

●

Increasing an object’s mass or its height increases its
gravitational potential energy

• Potential energy is the energy

an object has because of its
position, condition, or
chemical composition.

• It is stored energy, and it can

be transformed into kinetic
energy to do work.

• People store energy in many different ways to use for a variety

of tasks.

• Some tasks, such as riding in a car, meet needs.

• Some tasks are only for entertainment, such as playing with a

pogo stick.

11

Analyzing Potential Energy

Mod I Unit 1 Lesson 3

12

Potential Energy

• An object does not need to

be moving to have the ability
to do work.

• Potential energy is the

energy an object has because
of its position, condition, or chemical composition.

• A stretched condition of the rubber band gives it the ability to do

work when it is released and its potential energy is transformed to
kinetic energy.

• A ball at the top of a ramp has the potential to do work when it is

released and its potential energy is transformed to kinetic energy.

Mod I Unit 1 Lesson 2

13

Forms of Potential Energy

Mod I Unit 1 Lesson 2

• Elastic potential energy is the

energy associated with objects
that are stretched or compressed.

• A rubber band has elastic

potential energy when it is
stretched and will move to return to its unstretched shape,
it has the ability to do work.

• Gravitational, electrical, and magnetic potential energy all

depend on the positions of objects.

Which ball will make the larger splash? Why?

Potential Energy

Gravitational Potential Energy

• Which object would cause more

damage if it fell on someone:

Object A or Object C? Why?

Object B or Object C? Why?

Gravitational Potential Energy is the
energy an object has due to its
elevation or height.

• the higher an object, the

greater its GPE

• The greater the mass the

greater the potential energy.

16

Stored Energy
Potential Energy & Gravitational Potential Energy

Mod I Unit 2 Lesson 1

• The potential energy of an

object due to its height, or its
position relative to Earth’s
surface, is called gravitational
potential energy.

• All objects tend to move from places where they have higher

gravitational potential energy to places where they have
lower gravitational potential energy.

• You can make objects move upward by adding energy to

them.

Energy stored in elastic materials as the result of their stretching
or compressing is known as elastic potential energy.
•The more stretch, the more stored energy

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Elastic Potential Energy

Which bow has the
greatest elastic potential
energy?

Multiple Choice

Stored energy or energy due to its position is called

• mechanical energy

• potential energy

• kinetic energy

• thermal energy

Multiple Choice

Which of the following answer choices is NOT an example of potential energy?

• Running down a steep hill on vacation

• Holding a basketball in practice

• A drawn bow in an archer's hand

• A baseball at its highest point in the air

Multiple Choice

Where is potential energy at its minimum?

• W

• X

• Y

• Z

Multiple Choice

When a slingshot is in a held position it has

• mechanical energy

• potential energy

• kinetic energy

• radiant energy

18

Kinetic and Potential Energy in Systems

• Energy cannot be created

or destroyed, but it can be
transferred between the
different parts of a system.

• We can model how energy

moves through a system.

• We can also use systems to

view to track how energy is
being added to a system as an input and how energy is
being lost from a system as an output.

Mod I Unit 1 Lesson 2

19

Kinetic and Potential Energy in Systems
Energy Transformations

• Energy can be transformed from one type to another.

• A ball above your head has gravitational potential energy.

• When you drop the ball, it begins to fall.

• The farther the ball falls, the less gravitational potential

energy it has, but it is also moving and has kinetic energy.

• The longer the ball falls, the faster it moves as it

accelerates toward Earth.

• As its speed increases, so will its kinetic energy.

• The gravitational potential energy is being transformed

into kinetic energy.

Mod I Unit 1 Lesson 2

Several energy transformations happen when a ball is
dropped and bounces up again.

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nce.com

Transformation of Energy

PE -
maximum
KE - none

PE – none
KE -
maximum

PE -
decreasing
KE -
increasing

PE –
maximum
KE - none

Multiple Choice

A bicycle rider is traveling up a hill. When the rider reaches the top of the hill, she stops to rest. Then she travels down the hill. The diagram shows the rider in the three different positions.

 

 

Which of these correctly describes the potential energy and the kinetic energy of the bicycle rider?

• When the rider is at the top of the hill, her potential energy is the greatest, and her kinetic energy is the least.

• As the rider moves up the hill, her kinetic energy increases, and her potential energy decreases.

• When the rider goes down the hill, her potential energy increases, and her kinetic energy decreases.

• As the rider reaches the bottom of the hill, her kinetic energy and her potential energy decrease.

Multiple Choice

A demonstration helps students understand a principle of roller coaster design.

Which answer choice correctly describes the ball’s kinetic and potential energy?

• The ball has more potential energy at position Z than at position Y.

• The ball has more potential energy at position Y than at position X.

• The potential energy and kinetic energy of the ball are equal at position X.

• The potential energy and kinetic energy of the ball are greatest at position Z.

Multiple Choice

When stored energy begins to move the object______ energy from _______ to _________.

• energy, force, motion

• transfers, kinetic, potential

• forces, mechanical, nuclear

• transfers, potential,kinetic

Multiple Choice

Energy that transforms from potential to kinetic is neither_____ nor _______.

• created, force

• created, destroyed

• force,motion

• destroyed, law of conservation of energy

Open Ended

Provide an overall summary of your understanding of potential and kinetic energy. This can be a typed or audio recording response.