Transcript February2nd

Physical Science
Do Now
February 3rd 2011
• Copy the following two definitions:
• Qualitative Data:
– Deals with descriptions.
– Data can be observed but not measured.
– Colors, textures, smells, tastes, appearance,
beauty, etc.
• Quantitative Data:
– Deals with numbers.
– Data which can be measured.
– Length, height, area, volume, weight, speed,
time, temperature, humidity, sound levels, cost,
members, ages, etc.
SWBAT identify the six steps of the Scientific Method
Qualitative VS. Quantitative
• Qualitative: Think ‘L’ for LANGUAGE
• Quantitative: Think ‘N’ for NUMBERS
The Scientific
Method involves a
series of steps that
are used to
investigate a
natural
occurrence.
We shall take a
closer look at
these steps and
the terminology
you will need to
understand before
you start a
science project.
Problem/Question
Observation/Research
Formulate a Hypothesis
Experiment
Collect and Analyze Results
Conclusion
Steps of the
Scientific Method
1. Problem/Question: Develop a
question or problem that can
be solved through
experimentation.
Key Words/Phrases: “Wondered”, “Wanted to”,
Steps of the
Scientific Method
2. Observation/Research: Make
observations and research
your topic of interest.
Do you remember the
next step?
Steps of the
Scientific Method
3. Formulate a Hypothesis:
Predict a possible answer to
the problem or question.
Example: If soil temperatures
rise, then plant growth will
increase.
Steps of the
Scientific Method
4. Experiment: Develop and
follow a procedure.
Include a detailed materials list.
The outcome must be
measurable (quantifiable).
Steps of the
Scientific Method
5. Collect and Analyze Results:
Modify the procedure if
needed.
Confirm the results by retesting.
Include tables, graphs, and
photographs.
Steps of the
Scientific Method
6. Conclusion: Include a
statement that accepts or
rejects the hypothesis.
Make recommendations for
further study and possible
improvements to the
procedure.
Think you can name all
six steps?
Collect
Formulate
Observation/Research
Problem/Question
and
Experiment
Conclusion
Analyze
a Hypothesis
Results
Work on Part I of the
Scientific Method Worksheet
• Try to determine for each of the 12
situations what part of the Scientific
Method is being described.
– A. Recognizing the Problem
– B. Forming the Hypothesis
– C. Testing the Hypothesis
– Drawing Conclusions
Spend 10 minutes attempting this section of the
worksheet!
Lamar predicted that seeds
would start to grow faster if an
electric current traveled through
the soil in which they were
planted.
• B. form a hypothesis
Susan said, “If I fertilize my
geranium plants, they will
blossom.”
• B. form a hypothesis
Jonathan’s data showed that
ants moved away from
cucumber
slices.
• D. draw conclusions
Rene grew bacteria from the
mouth on special plates in the
laboratory. She placed drops of
different mouthwash on bacteria
on each plate.
• C. test the hypothesis (experiment)
Kathy used a survey to
determine how many of her
classmates
were left-handed and how many
were right-handed.
• C. test the hypothesis (experiment)
Dana wanted to know how
synthetic fibers were different
from
natural fibers.
• A. recognize a problem
Edward saw bats catching
insects after dark. He asked,
“How
do bats find the insects after
dark?”
• A. recognize a problem
Justin wondered if dyes could
be taken out of plants leaves,
flowers, and stems.
• A. recognize a problem
Davon noticed that his cactus
plant wilted the day after he
watered it.
• A. recognize a problem
James discovered that when he
gave his fish two different types
of food they fought with each
other less
• D. draw conclusions
Chelsea was curious about how
light effects plant growth, she
put one plant in the closet and
another near the window.
• C. test the hypothesis (experiment)
Sherrell told her friends that she
believed if she gave herself an
extra hour of sleep each night
then she would be less tired in
school.
• B. form a hypothesis
For the remainder of class
• Complete Scientific Method Worksheet
• Go through textbook and copy ALL
highlighted definitions from Section 2 in
textbook AND summary (Pages 12  19)
• Begin homework
– Section Review on Page 11
• Copy the Summary
• Complete ALL questions in notebook
• If you finished HW yesterday, you could
work on Monday’s assignment
– Section Review on Page 19
• Complete questions 1  7