Unit 3 Chapter 15 Day 1 OBJECTIVE: Describe the relationship between work and energy. Give examples of the major forms of energy and explain how each is produced. • Do Now: •ENERGY Vocabulary – 15.1 (10 words) • Today: •Energy and its forms… •Chapter 15.1 class read & GRWS •DVD Field Trip – Physics of Fun • Homework: •Read Chap 15.2 & complete GRWS • PHYSICS PHOTO PROJECT New Notebook New Table of Contents
Transcript
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Unit 3 Chapter 15 Day 1 OBJECTIVE : Describe the relationship
between work and energy. Give examples of the major forms of energy
and explain how each is produced. Do Now: ENERGY Vocabulary 15.1
(10 words) Today: Energy and its forms Chapter 15.1 class read
& GRWS DVD Field Trip Physics of Fun Homework: Read Chap 15.2
& complete GRWS PHYSICS PHOTO PROJECT New Notebook New Table of
Contents
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Unit 3 Chapter 15 Day 2 OBJECTIVE : Describe and give examples
of the major forms of energy. Analyze how energy is conserved and
converted. Do Now: Energy Forms Crossword Puzzle Today: Chap 15.2
GRWS check and Review Chapter 15 Energy! notes Energy Card Sort
Table Activity Homework: PHYSICS PHOTO PROJECT
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ASK Science 2015 Review
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Unit 3 Chapter 15 Day 3 OBJECTIVE : Demonstrate knowledge of
Chapter 15 Energy forms, conversions and conservation Do Now: Your
Turn - Everyday Energy Conversions (last page of your Energy Notes)
Today: Finish and Review Energy Card Sort Table Activity Homework:
PHYSICS PHOTO PROJECT DUE NEXT CLASS (TUESDAY)
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Unit 3 Chapter 15 Day 4 OBJECTIVE : Do Now: TURN IN PHYSICS
PHOTO PROJECT Alternative Energy Word Search Today: Energy
Resources Chapter 15.3 GRWS Everyday Energy - Hoover Dam Homework:
Alternate Energy Research
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Unit 3 Chapter 15 Day 5 Physics Lab OBJECTIVE : Apply Newtons
second Law Do Now: Bobcat Maze Today: Acceleration Lab or Newtons 3
rd Lab Unit 3 Study Guide 2 parts! Homework: Study Guide Fill-ins
and Problems
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Unit 3 Chapter 15 Day 6 OBJECTIVE : Roller Coaster Physics Do
Now: Roller Coaster Maze Today: Roller Coaster Energy Worksheet
Roller Coaster Physics Online Coasters (if available) Homework:
Study Guide Fill-ins and Problems
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Unit 3 Chapter 15 Day 7 OBJECTIVE : Demonstrate knowledge of
Chapter 15 Energy forms, conversions and conservation Do Now: Word
Wise Chapter 15 Today: Study Guide Problems and Questions Review
Game Homework: Study for UNIT 3 TEST on Tuesday!
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Unit 3 Chapter 15 Day 8 OBJECTIVE : Demonstrate knowledge of
Chapter 15 Energy forms, conversions and conservation Do Now: Do
Now Folder - 6 pages Today: Unit 3 Test Notebook - 12 pages Current
Events Stop the Shock Homework: Finish Current Events
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Into the Universe OBJECTIVE : Consider the possibilities beyond
our planet. Do Now: Pick up a laptop and sign on.
https://sites.google.com/site/mih mgruhlke/ Today: NASA Junior
Assistant (online) Homework: Complete constellation myth Monday
6/9/2014 Core 1 & 2 only
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ENERGY! Chapter 15
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Chapter 15.1 Energy Forms ENERGY is the ability to do WORK WORK
is the Transfer of Energy
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TYPES OF ENERGY Kinetic and Potential: GPE & EPE
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What is Kinetic Energy? The energy of MOTION Greek kinetos
means moving Depends upon the objects MASS and SPEED oDOUBLE the
mass and you DOUBLE the kinetic energy oDOUBLE the speed and you
QUADRUPLE the kinetic energy KE=1/2 mv 2
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Examples of Kinetic Energy
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What is Potential Energy? Gravitational Potential Energy
(PE=mgh) Depends on MASS, HEIGHT and the acceleration of GRAVITY
(9.8 m/s 2 ) DOUBLE the MASS or the HEIGHT DOUBLE the Gravitational
Potential Energy Elastic Potential Energy Objects that can be
stretched or compressed When stored energy is released it is
converted to Kinetic Energy EPE can be stored in compressed objects
like springs Potential Energy is energy that is stored as a result
of position or shape.
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Examples of Potential Energy What kind?
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TYPES OF ENERGY Mechanical, Electromagnetic, Electrical,
Chemical, Thermal And Nuclear
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What is Mechanical Energy? Energy due to a objects motion
(kinetic) and position (potential). The bowling ball has mechanical
energy. When the ball strikes the pins, mechanical energy is
transferred to the pins!
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Examples of Mechanical Energy
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What is Electromagnetic Energy? Light energy Includes energy
from gamma rays, x-rays, ultraviolet rays, visible light, infrared
rays, microwave and radio bands
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What is Electrical Energy? Energy caused by the movement of
electrons Easily transported through power lines and converted into
other forms of energy
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What is Chemical Energy? Energy that is available for release
from chemical reactions. The chemical bonds in a matchstick store
energy that is transformed into thermal energy when the match is
struck.
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Examples of Chemical Energy
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What is Thermal Energy? o Heat energy o The heat energy of an
object determines how active its atoms are. A hot object is one
whose atoms and molecules are excited and show rapid movement. A
cooler object's molecules and atoms will show less movement.
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QUIZ TIME! What type of energy cooks food in a microwave oven?
ELECTROMAGNETIC ENERGY What type of energy is the spinning plate
inside of a microwave oven? MECHANICAL ENERGY
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QUIZ TIME! Electrical energy is transported to your house
through power lines. When you plug an electric fan to a power
outlet, electrical energy is transform into what type of energy?
MECHANICAL ENERGY
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QUIZ TIME! What energy transformation occurs when an electric
lamp is turned on? ELECTRICAL ENERGY ELECTROMAGNETIC ENERGY
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What types of energy are shown below? Mechanical and Thermal
Energy (Dont forget friction)
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What type of energy is shown below? Chemical Energy
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What types of energy are shown below? Electrical, Mechanical
and Electromagnetic Energy
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What type of energy is shown below? Chemical Energy
(yummy)
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What type of energy is shown below? Thermal Energy
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Discuss or Draw the flow of energy transformations in a car
from starting vehicle to driving. You should have 5 different types
of energy.
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Energy Transfer Chemical Electrical Sound (mechanical) Light
(Electromagnetic) Thermal Mechanical
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Chapter 15.2 Energy Conversion and Conservation The law of
conservation of energy states that energy cannot be created or
destroyed However Energy can be converted from one form to another
and in either direction! The gravitational potential energy of an
object is converted into the kinetic energy of motion as the object
falls The BEGINNING TOTAL of KE + PE EQUALS the ENDING TOTAL of KE
+ PE
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How was energy converted or conserved?
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Energy and Mass E=MC 2 Einsteins equation shows that ENERGY and
MASS are equivalent and can be converted into each other E=energy M
= mass C = speed of light (3 x 10 8 m/s)
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Energy and Mass E=MC 2 In other words, Energy is released as
matter is destroyed and Matter can be created from Energy Because
the square of the speed of light is a very large figure: even a
small chunk of matter can produce a large amount of energy!
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Your Turn Think of an example from everyday life where
potential energy is transformed into kinetic energy, or vice versa.
Draw a diagram that illustrates the transformation, using the
interactive activity as an example. Then describe the
transformation.
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For example: When I carry a sled to the top of a snowy hill,
the potential energy of the sled increases. As I stand with my sled
at the top of the hill, the kinetic energy is zero and the
potential energy is at its maximum. As I slide down the hill, the
potential energy of the sled decreases and its kinetic energy
increases.
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Energy Skate park Energy in a Roller Coaster
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Physics Unit 3 Test Formula List Force - 2 nd Law F = m * a
Momentum p = m * v Average Speed v = d / t Acceleration a = (v f v
i ) t Gravitational Potential Energy GPE = m*g*h
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Energy Resources
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Non - Renewable Fossil fuels oil natural gas coal uranium
Renewable Hydroelectric Solar Geothermal Wind Biomass Nuclear
fusion
Alternative Energy Presentation Where does it come from or how
is it made? Advantages (use, production, waste) Disadvantages (use,
production, waste) Costs (immediate or start-up as well as long
term costs) Current usage in the US. How has it changed in your
lifetime? What is the future for this type of energy? ESSENTIAL
ITEMS TO INCLUDE: