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Steps of The Scientific Method - 8th Grade Science

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Diep Stamps

on 11 September 2017

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Transcript of Steps of The Scientific Method - 8th Grade Science

a tentative
explanation
based on what you already know and have researched.
a
prediction
or statement about what you "think" will happen.
testable
....you must be able to test it!
Scientific method
A series of steps used by scientists to solve a problem or answer a question.
ANALYSIS
will summarize your
results
and explain what happened in the experiment.
your results will either support or disprove your hypothesis.
If you accept it, then share your results with the scientific community
If your results don't support the hypothesis, explain why things did not go as expected.




Abstract

a
HYPOTHESIS
is
Also known as the
Question
;
the scientific method starts when you ask a question about something you observe: How, What, When, Who, Which, Why, or Where?
PROBLEM
RESEARCH
Collect information that provides insight into your topic through:

Reliable internet websites
Videos
Interview someone who
knows a lot about the topic
Books, magazines, journals

It is important to cite these resources.
Test your hypothesis
Design an
experiment
that will
give you data (information) that
either supports or disproves your hypothesis
Always write down the list of
materials
and step-by-step
procedures
of the experiment.
EXPERIMENT
STEPS OF THE SCIENTIFIC METHOD
Collect and organize your
Data.
(measurements and observations)

Display what happened in your experiment by
- making data tables
- charts
- graphs
- sketches
CONCLUSION
A mneumonic is a learning technique that uses a pattern of letters to assist in remembering information.

Example:
HOMES used
to remember the
5 Great Lakes.
Easy way for you to remember the scientific method is
"Paul Revere"
.

Paul ---------------Problem
Revere -------------Research
Has ---------------Hypothesis
Eggs ----------------Experiment
And ------------------Analysis
Cheese -------------Conclusion
How To Write a Hypothesis

We write it in an "
If

Then
" statement.


If
(I do this) _______,
then
_______ will happen.

EXAMPLE:
If
the teacher leaves the classroom,
then
the students feel free to talk more, making the room noisier.
Write a hypothesis for this statement:




Chocolate may cause pimples.
If

you eat a lot of chocolates,

then

you will get pimples.

Galileo Galilei

• Born in 1564 in Pisa, Italy.
• He is considered to be the first true scientist
because he performed
experiments.

• An ancient Greek philosopher named Aristotle said that heavy objects fall faster than lighter ones. However, he never tested this idea.

• Later, Galileo would ask the question, “How much faster?”

• He sent his students up to the top of a building and had them drop a heavy ball and a lighter one off at the same time. He had other students waiting below to measure the difference in time between the two hitting the ground.

Today of course we know what happened. Much to everyone’s surprise both balls hit the ground at about the same time!

This shows that it is much preferred to test your ideas rather than merely think about them.

Step 1. Identify the
problem
or the
question
.
Step 2.
Research
and collect information.
Step 3. Form a
hypothesis
.
Step 4.
Experiment
– test your
hypothesis
.
Step 5.
Analysis
– collect and organize data.
Step 6.
Conclusion
- report your results.
The Steps of THE SCIENTIFIC METHOD
Sample Test Question

Directions: Match each part of the story to a step of the SCIENTIFIC METHOD.


1. Kelly brushed her top teeth with Colgate and her bottom teeth with Crest for one week.


2. Kelly wondered which toothpaste would get her teeth whiter----Crest or Colgate?


3. Kelly determined that Crest make her teeth whiter than Colgate.


4. Kelly asked her dentist which brand of toothpaste he would recommend to make her teeth whiter.


5. Kelly believed that if she brushed with Colgate, then her teeth would be whiter because her friend brushes with Colgate.


6. After one month, Kelly’s bottom teeth (Crest) were whiter than her top teeth (Colgate).


EXPERIMENT
PROBLEM
CONCLUSION
RESEARCH
HYPOTHESIS
ANALYSIS
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