Energy Part 3
Chapter 9: Energy Transformations

Pace: 10 class periods
Checkpoint:  16 January
BIG IDEAS
P4.3 Potential and Kinetic Energy
Moving objects have kinetic energy. Objects experiencing a force may have potential energy due to their relative positions (e.g., lifting an object or stretching a spring, energy stored in chemical bonds). Conversions between kinetic and gravitational potential energy are common in moving objects. In frictionless systems, the decrease in gravitational potential energy is equal to the increase in kinetic energy or vice versa. 
Standards Covered:
  • P4.3A  Identify the form of energy in given situations (e.g., moving objects, stretched springs, rocks on cliffs, energy in food). 
  • P4.3B  Describe the transformation between potential and kinetic energy in simple mechanical systems (e.g., pendulums, roller coasters, ski lifts). 
  • P4.3C  Explain why all mechanical systems require an external energy source to maintain their motion.
  • P4.3e  Calculate the changes in kinetic and potential energy in simple mechanical systems (e.g., pendulums, roller coasters, ski lifts) using the formulas for kinetic energy and potential energy.

9 Pretest and Differentiation

If you score a 90% or above on this pretest on your first attempt you will not need to complete any of the practice for this unit and an accelerated assignment will be provided.  The pretest is not open internet or buddy or book.  This pretest will be timed and may only be completed in class. 

Chapter 9 PDF Textbook and Notes

cpte09.pdf
File Size: 3116 kb
File Type: pdf
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ch09.ppt
File Size: 7263 kb
File Type: ppt
Download File

9.4 Potential Energy
6 January
p 148-149

Big Idea: Three examples of potential energy are elastic potential energy, chemical potential energy, and gravitational potential energy
Standard(s):
4.3 A
BOOK NOTES:
1.  Use the key terms and your text to complete Cornell Notes for this section.  Include diagrams and examples as much as possible.  
WEB NOTES
2.  Add to your 9.4 Cornell Notes using the online learning module from Education Portal, What is Potential Energy (expires 4 February).  Complete the quiz and record in your notebook.  

WEB PRACTICE 1
Complete the 2 online practice problems at the VERY BOTTOM of the webpage in your notebook.  
Terms to Know:
elastic potential energy
chemical potential energy
gravitational potential energy
work formula: W = Fd
PE=mgh (gravitational potential energy = weight x height)

9.5 Kinetic Energy
7 January
pg 150

Big Idea: The kinetic energy of a moving object is equal to the work required to bring it to its speed from rest, or the work the object can do while it is being brought to rest 
Standard(s):
4.3A
BOOK NOTES:
1.  Use the key terms and your text to complete Cornell Notes for this section.  Include diagrams and examples as much as possible.  

WEB NOTES
2.  Add to your 9.5 Cornell Notes using the online learning module from Education Portal, Kinetic Energy (expires 4 February).  Complete the quiz and record in your notebook. 

WEB PRACTICE 1
Complete the 1-3 online practice problems at the VERY BOTTOM of the webpage in your notebook.  
Terms to Know:
-kinetic energy
-KE=1/2mv^2 (kinetic energy = 1/2 mass x speed^2)
-Fd=1/2mv^2 (net force x distance = kinetic energy)
9.4-9.5 Mastery Check when completed

9.6 Work-Energy Theorem
pg 151-152
8 January

Big Idea: The work-energy theorem states that whenever work is don, energy changes.  
Standard(s):
4.3B
BOOK NOTES:
1.  Use the key terms and your text to complete Cornell Notes for this section.  Include diagrams and examples as much as possible.  
VIDEO NOTES:
2.  Add to your 9.6 Cornell Notes using the online learning module from Education Portal, Work-Energy Theorem: Definition and Application (expires 5 February).  

PRACTICE:
3. Complete the video quiz and record in your notebook. 
Terms to know:
-work-energy theorem
-

9-10 January = Snow Days
Do not complete after this line

9.7 Conservation of Energy
pg 153-154
9 January

Big Idea: The Law of Conservation of Energy states that energy cannot be created or destroyed. It can be transformed from one form into another, but the total amount of energy never changes.  
BOOK NOTES:
1.  Use the key terms and your text to complete Cornell Notes for this section.  Include diagrams and examples as much as possible.  

WEB NOTES
2.  Add to your 9.7 Cornell Notes using the online learning module from Education Portal, Conservation of Mechanical Energy (expires 5 February).  Complete the quiz and record in your notebook. 

PRACTICE 1
Complete Concept Development 9-1. Paper copies are provided in class.  
cpcd0901.pdf
File Size: 92 kb
File Type: pdf
Download File
Standard(s):
4.3B

Terms to Know:
Law of Conservation of Energy
transforms
Kinetic Energy
Potential Energy
Joule

9.8 Machines
pgs 155-157
10 January

BIG IDEA:
A machine transfers energy from one place to another or transforms it from one form to another.

BOOK NOTES:
1.  Use the key terms and your text to complete Cornell Notes for this section.  Include diagrams and examples as much as possible.  

WEB NOTES
2.  Add to your 9.7 Cornell Notes using the online learning module from Education Portal, What Are Simple Machines? (expires 6 February).  Complete the quiz and record in your notebook. 

PRACTICE 1
Complete Lab 27 Muscle Up! Paper copies are provided in class.  
cplb0927.pdf
File Size: 50 kb
File Type: pdf
Download File
Standard(s):
4.3B

Terms to Know:
machine
level
fulcrum
mechanical advantage
pulley
input
output
9.6-9.8 MASTERY CHECK WHEN COMPLETED

9.9 Efficiency
Pg 158-160
11 January

Remediation and any Chapter 9 Late Work due within 10 days of test date or the end of the semester.