Transcript I.S. Week 8 Quarter 2 Lessons

Week #8 Quarter 2 (2/2/1312/6/13) (calendar site)
Monday, 12/2
Have out:
•Energy Stamp Sheet
•“Find Someone
Who…” Activity
I.S. Learning Goal:
• I can describe energy.
Homework:
 ALL WORK DUE
DECEMBER 12TH!!!
Daily Question: How does energy go
through changes?
Activities/Assignments:
1.Discuss Grades
2.New Energy Stamp Sheet
3.“Find Someone Who…” Activity
4.Make-up work time
Are you a Leader or a
Follower???
Leaders
 A real leader faces the music,
even when he doesn't like the
tune. Anon
 Before you are a leader,
success is all about growing
yourself. When you become a
leader, success is all about
growing others. Jack Welch
 The best leaders are the best
Follower
 You’re unique. Don’t
be a follower. Be a
leader. Anon
 Innovation
distinguishes
between a leader and
a follower. Steve
Jobs
Week #8 Quarter 2 (2/2/1312/6/13) (calendar site)
Tuesday, 12/3
Have out:
•Energy Stamp Sheet
•Energy Practice
Test
I.S. Learning Goal:
• I can describe energy.
Homework:
 ALL WORK DUE
DECEMBER 12TH!!!
Daily Question: How does energy go
through changes?
Activities/Assignments:
1. Energy Practice Test
2. Energy Assessment Sheet #1
Rubber Band Activity
Update Table of Contents
DATE
PAGE #
11/26
31
12/2/13
33
12/3/13
35
PAGE TITLE
DATE
PAGE #
PAGE TITLE
Ionic and
Covalent
Bonding Review
Worksheet
Find Someone
Who…Activity
11/27/13
32
Chemistry Test
12/3/13
34
Energy
Assessment Stamp
Sheet
Rubber Band Lab 12/4/13
36
Energy Outline
Notes
Energy
Shooting Rubber Bands
Overview
For this introductory activity you will shoot rubber bands stretched to
various distances.



Hypothesis: ?
Materials:
 Rubber Band
 Ruler
 Data Table
Procedures:
 Write a hypothesis on the back of your data table.
 Place a rubber band on the edge of the ruler, pull it back to 10 cm, and
release the rubber band. Be sure the ruler is parallel to the floor.
 Measure the distance traveled by the rubber band and record it in a
data table.
 Repeat these steps while increasing the distance the rubber band is
pulled back by five centimeters for each release.
 Average your results and create a line graph of your average data with
distance traveled on the y-axis and the distance you pulled the rubber
band back on the x-axis.
http://www.sciencebuddies.org/science-fair-projects/project_ideas/ApMech_p017.shtml?fave=no&isb=cmlkOjE1MjI3OTc4LHNpZDowLHA6MSxpYTpBcE1lY2g&from=TSW
Data Table
Trial
1
2
3
4
5
Average
10 cm
15 cm
20 cm
25 cm
30 cm
Questions
1. What patterns or trends did you
notice?
2. Was energy used to launch the rubber
band? If so, explain your reasoning.
3. What factors could have impacted the
accuracy of your data?
4. Did your data support your hypothesis?
Explain your reasoning.
Week #8 Quarter 2 (2/2/1312/6/13) (calendar site)
Wed/Thurs, 12/4 & 12/5
Have out:
•Energy Stamp Sheet
•“Find Someone
Who…” Activity
I.S. Learning Goal:
•
•
I can compare and contrast kinetic and
potential energy.
I can compare and contrast the different
forms of energy (chemical, mechanical,
nuclear, thermal, electromagnetic, sound).
Daily Question: How does energy go
through changes?
Activities/Assignments:
1. Energy Assessment Sheet #2 & 3
2. Finish Rubber Band Activity
3. Energy Outline Notes
Homework:
 ALL WORK DUE
DECEMBER 12TH!!!
Update Table of Contents
DATE
PAGE #
PAGE TITLE
DATE
PAGE #
PAGE TITLE
12/2/13
33
Find Someone
Who…Activity
12/3/13
34
Energy
Assessment Stamp
Sheet
12/3/13
35
Rubber Band Lab 12/4 or
12/5/13
36
Energy Outline
Notes
12/4 or
12/5/13
37
Potential and
Kinetic Energy
Practice Sheet
38
Forms of Energy
(Grouping Activity)
12/4 or
12/5/13
39
Identify the
Form of Energy
Worksheet
12/4 or
12/5/13
Shooting Rubber Bands
Overview
For this introductory activity you will shoot rubber bands stretched to
various distances.



Hypothesis: ?
Materials:
 Rubber Band
 Ruler
 Data Table
Procedures:
 Write a hypothesis on the back of your data table.
 Place a rubber band on the edge of the ruler, pull it back to 10 cm, and
release the rubber band. Be sure the ruler is parallel to the floor.
 Measure the distance traveled by the rubber band and record it in a
data table.
 Repeat these steps while increasing the distance the rubber band is
pulled back by five centimeters for each release.
 Average your results and create a line graph of your average data with
distance traveled on the y-axis and the distance you pulled the rubber
band back on the x-axis.
http://www.sciencebuddies.org/science-fair-projects/project_ideas/ApMech_p017.shtml?fave=no&isb=cmlkOjE1MjI3OTc4LHNpZDowLHA6MSxpYTpBcE1lY2g&from=TSW
Data Table
Trial
1
2
3
4
5
Average
10 cm
15 cm
20 cm
25 cm
30 cm
Questions
1. What patterns or trends did you
notice?
2. Was energy used to launch the rubber
band? If so, explain your reasoning.
3. What factors could have impacted the
accuracy of your data?
4. Did your data support your hypothesis?
Explain your reasoning.
Energy
 the ability to do work or cause change
 typically expressed in units of joules (J)
 can be transferred from one object to
another
 two general types:
 Potential
 Kinetic
Potential Energy (PE)
 stored energy that an object has due to its
position or chemical composition
 Types:
 Gravitational – results from vertical position or
height
 Formula: PE = mgh
0.45 kg
 Elastic
– results from stretching
or
0.45 kg
Which soccer ball has
compressing
more gravitational
potential energy?
Explain your reasoning.
The types listed are not all-inclusive
Kinetic Energy (KE)
 energy of motion
 depends on mass and velocity
 Formula: KE = ½ mv2
What is the
difference between
speed and velocity?
 increases as mass or velocity increases and
decreases as mass or velocity decreases
2 m/s
3 m/s
0.45 kg
0.45 kg
Which soccer ball
has more kinetic
energy? Explain
your reasoning.
Relationship Between PE and KE
PE
KE
What is happening
to the PE and KE as
the soccer ball falls
to the feet of the
mid-fielder?
What about the
PE/KE graph could
be considered
misleading?
Practice Problems
 A diver weighing 46 kg is preparing for a dive from the
10 meter diving platform. How much gravitational
potential energy does the diver have?
PE = mgh
Earth’s2
P.E. = (46 kg) (9.8
m/s )(10 m) = 4,508 J
Gravity
 A cheetah weighing approximately 50 kg was seen
chasing a gazelle at a speed of 32.4 m/s. What is the
kinetic energy of the cheetah?
KE = 1mv2
2
K.E. =
(1)_____________
(50 kg)(32.4 m/s)2 = 26,244 J
2
Week #8 Quarter 2 (2/2/1312/6/13) (calendar site)
Friday, 12/6
I.S. Learning Goal:
• I can explain the law of conservation of
energy.
• I can explain the relationship between
energy conversions and efficiency.
Daily Question: How does energy go
through changes?
Activities/Assignments:
1. Energy Assessment Sheet #4 & 5
2. Forms of energy worksheet
3. Energy Outline Notes
Have out:
•Energy Stamp Sheet
•“Find Someone
Who…” Activity
Homework:
 ALL WORK DUE
DECEMBER 12TH!!!
Update Table of Contents
DATE
PAGE #
PAGE TITLE
DATE
PAGE #
PAGE TITLE
12/3/13
35
Rubber Band Lab 12/4 or
12/5/13
36
Energy Outline
Notes
12/4 or
12/5/13
37
Potential and
Kinetic Energy
Practice Sheet
12/4 or
12/5/13
38
Forms of Energy
(Grouping Activity)
12/4 or
12/5/13
39
Identify the
Form of Energy
Worksheet
12/6/13
40
Forms of Energy
Practice Sheet
12/6/13
41
Energy
Conversion
Worksheet
Energy
 the ability to do work or cause change
 typically expressed in units of joules (J)
 can be transferred from one object to
another
 two general types:
 Potential
 Kinetic
Potential Energy (PE)
 stored energy that an object has due to its
position or chemical composition
 Types:
 Gravitational – results from vertical position or
height
 Formula: PE = mgh
0.45 kg
 Elastic
– results from stretching
or
0.45 kg
Which soccer ball has
compressing
more gravitational
potential energy?
Explain your reasoning.
The types listed are not all-inclusive
Kinetic Energy (KE)
 energy of motion
 depends on mass and velocity
 Formula: KE = ½ mv2
What is the
difference between
speed and velocity?
 increases as mass or velocity increases and
decreases as mass or velocity decreases
2 m/s
3 m/s
0.45 kg
0.45 kg
Which soccer ball
has more kinetic
energy? Explain
your reasoning.
Relationship Between PE and KE
PE
KE
What is happening
to the PE and KE as
the soccer ball falls
to the feet of the
mid-fielder?
What about the
PE/KE graph could
be considered
misleading?
Practice Problems
 A diver weighing 46 kg is preparing for a dive from the
10 meter diving platform. How much gravitational
potential energy does the diver have?
PE = mgh
Earth’s2
P.E. = (46 kg) (9.8
m/s )(10 m) = 4,508 J
Gravity
 A cheetah weighing approximately 50 kg was seen
chasing a gazelle at a speed of 32.4 m/s. What is the
kinetic energy of the cheetah?
KE = 1mv2
2
K.E. =
(1)_____________
(50 kg)(32.4 m/s)2 = 26,244 J
2
Potential and Kinetic Energy
Practice Sheet
 Complete the Potential and Kinetic
Energy Practice Sheet Quietly on your
own!
 When you are done, raise your hand
to receive a stamp.
 Be prepared to share answers in
class!