Transcript Manipulated Variable

9/29 & 9/30 - 7th Grade Agenda
Collect HW: Reading & Note Taking p.19
& 21
Process of Science
Video Jane Goodall & Chimpanzees
Class Reading p. 18 – p.22
HW: Reading & Note Taking p.22 & 23
3 Extra Credit: Bring print out of grades
from home by 10/8 & 10/9
Last day to take back posters
that are not on the walls.
serving
Ob_______
Inf_______
erring
Pr_______
edicting
ssifying
Cla________
Chimp Food
• This graph
shows the diet
of chimps at
Gombe
National Park
during May of
one year.
What food do chimps eat?
• Fruits, seeds,
leaves, meat,
insects,
blossoms and
other foods
What percent of diet did blossoms, seeds,
leaves and fruits make up?
• 95%
November is the main termite fishing season,
how will the chimp’s diet change in November?
• Insects will
make up
greater part
of the
chimp’s diet
Biologists use classification to
organize living things into
oups so that the organisms
gr_____
are ea____
sier to study
Classify the objects in the
photograph into two groups
Now, Classify the objects in the
photograph into three groups
Making models
• Making models
involves creating
sentations of
repre_________
complex objects or
processes.
Nature of Inquiry
Posing a q________
uestions
municate
Com__________
Forming a
Hy________
pothesis
Design an
Ex________
periments
onclusions
Draw C__________
Collect and
erprete data
Int_________
Scientific Inquiry
• Scientific Inquiry
refers to the diverse
ways in which
scientists
inve_______
stigate the
natural world and
pose expl__________
anations
based on the
evidence they gather.
1st Step: Posing Questions
• Scientific Inquiry often
begins with a problem
or question about an
obse_________.
rvation
2nd Step: Hypothesis
• Hypothesis is a
possible expl_______
anations
for a set of
observation or answer
to a scientific question
3rd Step: Design an Experiment
• An experiment in which
only one var______
iable is
manipulated at a time is
called a controlled
experiment
• Why is only one variable
manipulated?
4th Step: Collecting and
Interpreting Data
• Data are the facts,
figures, and other
dence gathered
evi_______
through observations.
• It is usually a data or
a chart
5th Step: Drawing Conclusions
• A conclusion is a
summary of what you
rned from
have lea_____
an experiment.
6th Step: Communicating
• Communicating is
sharing of ideas and
experimental findings
with others through
writing and sp______.
eaking
What is the difference between
Manipulated Variable and
Responding Variable?
• Manipulated Variable:
Type of water that you
give to plants
• Responding Variable:
Height of the plant
Manipulated Variable
(Also known as Independent
Variable)
• The one variable that is purposely
nged in an experiment is called the
cha______
manipulated variable.
Responding Variable
(Also known as Dependent
Variable)
onse
• The factor that may change in resp_____
to the manipulated variable is called the
responding variable
What is the manipulated variable
and responding variable?
• When I lower the light
the crickets chirp
louder
What is the manipulated variable
and responding variable?
• Plants exposed to
rock & roll music grow
taller than plants not
exposed to music
What is the manipulated variable
and responding variable?
• students who have
eaten breakfast score
higher on tests than
students who have
not eaten breakfast.
Control
• A control is part of the experiment to which you
can compare the results of the other tests. In
the control, the conditions are the s____
ame except
for the manipulated variable.
Sugar Water
Water
Operational Definition
• Operational definition
is a statement that
describes how to
mea_____
sure a variable
or define a term. For
example, in the
cricket experiment,
what sound will count
as a single chirp?