Ch 2 & 9 Lesson Plans
The Big Idea: Energy can be changed from one form into another form,
but energy cannot be created or destroyed.
Explain the relationship between potential and kinetic energy.
Explain energy transformation in terms of the Law of Conservation of Energy.
GPS:
S8P2.a Explain energy transformations in terms of energy.
S8P2.b Explain the relationship between potential and kinetic energy.
Vocabulary: kinetic energy, potential energy, energy transformation, gravity,
mass, weight, density, volume, law of conservation of energy
Day 1:
Chapter 9 Hook Activity: page 239 Start-up Activity (pendulum)
Go over ch 9-1 (What is Energy?)
1. Hook: Strike a match, and let it burn a little
wind up a windup toy, and let it run
turn off the lights, and turn on a flashlight
knock a tennis ball off the table so it bounces onto the floor
**How is energy involved in each?
2. Kinetic Energy:
--Math Focus, page 241
--A snail has a mass of 5 grams and travels at 0.014 m/s.
What is the snails kinetic energy (watch the units!)?
--DYK:
One joule is approximately the energy required to lift an apple 1 meter.
The average serve of a tennis ball requires 75 J of KE, a sin single fastball
pitch requires 120J, and a forward pass in football requires 150J.
-- Brainpop: Kinetic Energy
3. Potential Energy:
--Math Focus, page 242
--Brainpop: Potential Energy
4. Mechanical Energy: (ignore friction and air resistance for now)
--Ex: page 243 JUGGLER
Refer back to the chapter 9 Hook Activity—point out KE and PE of pendulum
Homework: Brainpop “quizzes”: KE and PE
Possible Extra Credit: See ch 9 “Long-term Projects”
Day 2:
Finish chapter 9, section 1
Divide the class into 6 groups (Other forms of energy)
—summarize key points to the class
Show the class a windup toy (wind and let go). What 4 types of energy are at work?
Summarize with Brainpop: Forms of Energy
Homework: Ch 9-1 Section Review (p. 247) #3-9
Brainpop quiz: Forms of Energy
Extra Credit: Solar Over Competition
Day 3:
Go over ch 9-2 (Energy Conservation)
-- Lab: Bouncing Balls (with lab sheet)
--page 251, table 1
--page 252, bicycle example
Skills Practice Lab: Finding Energy (pp 265-5)
Homework: Ch 9-2 Section Review (p 253) #2-9
Holt Concept Map (fill-in)
Day 4:
Go over 9-3 (Conservation of Energy)
--page 254, figure 1 (roller coaster)
--page 255, figure 2 (light bulb)
Homework: Ch 9-3 Section Review (p. 257) #2-5
Chapter 9 Puzzler
Ch 9 Critical Thinking
Day 5:
Go over 9-4 (Energy Resources)
--page 259, figure 2
--divide the class into 5 groups to tell the class about renewable resources
--Brainpops: Fossil Fuels (opt: Gas & Oil)
--Brainpops: Energy Sources (Solar Energy, Nuclear Energy, Dams)
--page 262, table 1 (Advantage and Disadvantages of Energy)
Homework: Ch 9-4 Section Review (p. 263) #4, 6-9
--Make a BAR and PIE graph of the following information (remember to label
the axis and include units—don’t forget the title and color)
Worldwide distribution of coal reserves (billions of metric tons)
Africa= 66
Asia=695
Europe=404
North America=271
South and Central America=7
Day 6: Review chapter 9
Homework: Chapter 9 Review (p. 266-7) # 6-13, 15-18, 20-25
Read chapter 2, sections 1-2 by tomorrow
Day 7:
Go over chapter 2, sections 1 (What is Matter)
-- Metric review sheet (keep in notebook all year)
-- Brainpops: Measuring Matter
Measuring Mass
Law of Conservation of Mass
--Math Focus, page 40
--page 41, figure 5 (Mass vs Weight)
Homework: Ch 3-1 Section Review (p. 43 ) #4-11
and pages 58-59 #6, 8, 9, 21
Ch 2 Puzzler
Ch 2 Holt Concept Map (fill-in)
Day 8:
Go over chapter 2, sections 2 (Physical Properties)
--page 45, figure 2
--density (I love density)
--Lab: density cubes
--Lab: density of liquids (p. 46, figure 4):
Ex: corn oil, water, red shampoo, blue dish detergent,
antifreeze, maple syrup
--Math Focus, page 47
Homework: Ch 3-2 Section Review (p 49) #2, 5-11
and pages 58-59 #11, 16, 22, 24
Day 9: Chapter 9 and 2 (1-2) Test
Homework: begin reading chapters 4, 11, 12 (ch 2b?)
