Catalyst #4: August 19th, 2013
You may go ahead and place any materials you
have on your desk. (If you have already turned
in paper towels, etc. to me, they will be
distributed for check-off soon.)
1.
2.
3.
4.
Name the two types of bias. Name
one way scientists try to prevent
bias.
What is the factor that is measured
in an experiment?
You want to measure the mass of a
sample. What piece of lab
equipment would you use?
What is the independent variable on
the graph depicted? What axis is it
Binder/Materials set-up





Syllabus and Procedures in front
(before Dividers)
5 dividers: Unit 1, Unit 2, Unit 3, Unit
4, Unit 5 (The other package can be
kept in a pocket until next semester)
Under Unit 1 tab: Assignments 1, 2, 3,
4, 5
College ruled paper in the back
Paper towels and bonus materials
MUST BE LABELED
Agenda




Materials Check/Catalyst: 10 minutes
Binder set up overview: 5 minutes
Homework Bingo/Dojo: 8 minutes
ActivExpressions Practice/Unit 1
Review Game/Unit 1 Study Guide:
Remainder
Announcements




Unit 1 Test tomorrow
Unit 1 Study Guide due tomorrow
First standard grades coming soon!
Class jobs
Objectives



SW review all of Unit 1 objectives.
SW prepare to make at least
“Proficient” on Unit 1 exam
SWBAT articulate ActivExpressions
expectations.
Class Jobs: First





Marcus: Dojo Manager
Kametria: Homework Bingo!
Dashaad Prude: CRR Tracker
Stevie Mattison: Attendance Manager
Arianna Sennett and Chelsea Duckett:
ActivExpression Managers
Class Jobs: Second




Travis: Attendance Manager
Dojo Manager, ActivExpressions
Managers, CRR Tracker
Ronesha: Homework Bingo
Jayla
Class Jobs: Third






Basil: Dojo Manager
Kylia and Takeya: Homework
Managers
Zeloria: CRR Tracker (?)
Evan, Jalen, and Kem(?):
ActivExpression Managers
Attendance Manager: Nick
Matthew Nunally: Dojo and
Attendance Back-up
Class Jobs: Fifth






Keineisia/Rae-Jean?
Najah: CRR Tracker
Jacob: Dojo; Ana: Back-up Dojo
ActivExpressions Managers: Jeremiah
and Khari
Attendance Manager: Daijah; Meghan
Moody: Back-up Attendance
Homework Trackers: Alexus and
Meghan
Class Jobs: Sixth





Dojo: Dewayne
Attendance: Tammy/Back-up:
Christopher
CRR Tracker: Christian
Homework Tracker: Britnee
ActivExpression Managers: JB and
Tiara
Class Jobs: Seventh





Homework Trackers: Moya and
Jeanelle
ActivExpressions Manager: Destiny
and Anthony/Jared?
Attendance Manager: Carter Hawkins
Dojo: Anthony/Jared?
CRR Tracker?
Class Jobs



I will pull you aside to discuss your
duties and “training” for your job.
You will get your “paycheck” later this
week.
Some of you will not start until later
this month.
Dojo




1. Check your points.
2. If you’d like to “spend”, raise your
hand for a DPS. (WHEN YOU SPEND,
YOUR ACCOUNT IS CLEARED!)
3. Prize descriptions on the back
4. How to fill out the DPS
Homework Bingo
Drawing!
Unit 1 Test





19 multiple choice and short answer
questions
---Scientific method, Conclusions, Bias,
Lab equipment, Interpreting graphs
---Honors Extension
---Assignments 1- 5
---Unit 1 Study Guide
How to Study





Read over your notes
Do the Unit 1 Study Guide
Review the Unit 1 Study Guide
Come after school with any questions
Pay close attention during the review
game
Unit 1 Review

Go over any questions from the study guide
you might have

Spend the remainder of class answering
review questions with ActivExpressions

Competition between first and second
halves of the alphabet

Do not call out answers


A scientist plants sunflower seeds in
three identical pots. Each pot contains
three seeds. The first spot contains
loam, the second pot contains clay,
and the third pot contains sand. All the
seeds receive the same amount of
sunlight and water for three weeks.
What is the independent variable in
Question

Write a hypothesis for the scientific
question below:
– How does the number of absences a
student has affect his/her grades?
Question


What is the name of the factor that is
measured or observed in an
experiment?
Answer: Dependent variable
Question


A scientist is studying how the temperature
of a gas affects the volume of a balloon. He
places balloons in three different
temperatures and then measures the
volume of each. What is the independent
variable? What is the dependent variable?
Answer: Independent= temperature;
dependent= volume
Question

A scientist plants sunflower seeds in three identical pots. Each pot
contains three seeds. The first spot contains loam, the second pot
contains clay, and the third pot contains sand. All the seeds receive the
same amount of sunlight and water for three weeks. What is the
independent variable in this experiment?
a. The number of seeds
b. The kind of soil in which the seeds are planted
c. The amount of water and sunlight
d. The height of the plants after three weeks


Answer: B. The kind of soil in which the seeds
are planted
Question
In 1796 Edward Jenner infected an 8 year old boy with cowpox
(Ethical??). Several months later he exposed the boy to the more
dangerous smallpox disease. He noted that the boy did not contract
smallpox. What conclusion is best defended by Jenner’s discovery?
a. Cowpox promotes the infection of smallpox
b. Cowpox prevents the infection of smallpox
c. Cowpox destroys smallpox
d. Cowpox stops the infection of all pox viruses


Answer: B. Cowpox prevents the infection of
smallpox
Question



A scientist wants to study the effects of diet
on rat behavior. She selects two lab rats and
feeds one sunflower seeds and the other a
cheese-based diet. After two weeks, she notes
the cheese diet rat sleeps +5 hours more than
the sunflower diet rat. She concludes that
dairy based diets are unhealthy for rats.
Source of bias?
Type of bias?
Question


What type of bias deals with “how” the
scientist collects data?
What is one way scientists prevent bias?
Question


What is the best
conclusion about the
effects of temperature on
balloon volume based on
the results to the right?
Answer: My conclusion is
that increasing
temperature increases the
volume of a balloon.
Temperature
Volume
5 ºC
900 cm3
25 ºC
930 cm3
50 ºC
965 cm3
Question
Type of
Music
Heart Rate
Rock
75
beats/minute
Pop
76
beats/minute
Rap
76
beats/minute
Gospel
75
beats/minute



You ask the question “How
do different types of music
affect heart rate?” What is
the best conclusion about
the effect of music on heart
rate based on the results to
the left?
Answer: My conclusion is
that different types of music
do not affect heart rate
Now answer #16 on the
study guide
Question


What is the name of the
piece of equipment
pictured AND what is it
used for?
Answer: Graduated
cylinder; to measure
small volumes of liquid
Question


The tool to the left is
used to measure the
mass of objects. What
is it?
Answer: Triple beam
balance
Question


In what month AND
year was there the
most rainfall?
Answer: April 1989
Question


What happened to
the amount of
rainfall from
February 1989 to
April 1989?
Answer: Rainfall
increased
Reminders

STUDY FOR YOUR TEST!
– Use your notes and the Unit 1 Study
Guide
– Sleep. Eat. Take the test seriously.