What is the equation for potential energy What is the equation for kinetic energy Potential Energy Use the equation for PE to answer the following question PE depends what two things Mass and height ID: 625745
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Slide1
Warm-Up:
What is the equation for potential energy?
What is the equation for kinetic energy?Slide2
Potential Energy
Use the equation for PE to answer the following question:
PE depends what two things?
Mass and height
What is the height of an object on the ground?
What is the potential energy of an object on the ground?Slide3
Which object has the most potential energy? Support your answer.
5 kg
5 kg
5 kg
5 kg
5
m
3
m
8
m
Which object has the least potential energy? Support your answer.Slide4
Which object has the most potential energy? Support your answer.
100 kg
1 kg
5 kg
50 kg
5m
5m
5m
5m
Which object has the least potential energy? Support your answer.Slide5
Which object has the most potential energy? Support your answer.
10 kg
50 kg
5 kg
500 kg
5
m
3
m
8
m
Which object has the least potential energy? Support your answer.Slide6
Kinetic Energy
What two things does KE depend on?
Mass and velocity
Which one has a greater affect on KE? Why?
What happens when velocity is doubled?
How would you approach this problem?Slide7
Planes, trains, and automobiles
Which type of energy is demonstrated in the following questions?
A jet plane traveling at 700 mi/hr
How would you solve this problem
?Slide8
Planes, trains, and automobiles
Which of the two scenarios has MORE potential energy?
(a) a plane on the ground or (
b
) a the same plane flying through the air?
How would you solve this problem
?Slide9
Exa
m Corrections
Is it possible to have both potential and kinetic energy? Explain your answer using a SPECIFIC example.
How much PE does an object have on the ground?
How much PE does a really, really, really big object have on the ground?
What happens to KE when velocity doubles?
Answer each question in complete sentences.
Title this Exam Corrections.
Turn it into the Inbox when you are finished.Slide10
Heat
What is heat?
What is temperature?Slide11
Why is it important to study heat and energy?Slide12
Hot Issues & Tough Questions
Read the purple handout (these are yours to keep).
Tape or staple the green sheet into your notebook and answer the questions.Slide13
Hot Issues and Tough Questions
List 1 reason the reading gives for studying heat and energy.
What is the reading describing when it talks about
bangers
and
wigglers
? (hint: we learned about these last semester).
What term from our last unit is being transferred when bangers and wigglers collide?Slide14
What is heat?
A
measure of the
average kinetic energy
of the particles in a sample of
matterSlide15
What is temperature?
The measure of the amount of
heat
a substance has.Slide16
How Heat Travels
Pull out your graphic organizer from last class.
What are the three methods of heat transfer?
Conduction
Convection
RadiationSlide17
Purple Sheet
Read the first section of the purple sheet. Stop when you get to the first horizontal line.
What are the major points of this section
?Slide18
Purple Sheet
Read the second section on Conduction of the purple sheet. Do not start reading Convection.
What are the major points of this section?Slide19
Purple Sheet
Read the third section on Convection of the purple sheet. Do not start reading Radiation.
What are the major points of this section?Slide20
Purple Sheet
Read the third section on Radiation of the purple sheet.
What are the major points of this section
?Slide21
HOMEWORK:
Work on the back of the purple sheet.
Whatever you do not finish in class is HW.
You may only work with
ONE
partner. No groups of three.
You may listen to music.WE DO HAVE AN EXIT TICKET!Slide22
Describe what is going on and how each method of heat transfer works in this example:
E
X
I
T
T
I
C
K
ET