• The scientific method was
developed so scientists could
test possible explanations to
questions, and allow others to
ver...
• The scientific method
begins when a person
asks a question. For
example, "Do the seeds of
a particular plant species
nee...
 The question is usually
followed by a thorough
search for information
about the topic.
Gather information about what
has...
 Hypothesis- a possible explanation for an
observed set of facts.
Based on your research, what
do you think the solution ...
 The experiment must be done under
controlled conditions. This means all factors
that affect the results of the experimen...
 A collection of information and data
about the experiment.
record/analyze
data
This is a careful examination
of the info...
 Make a conclusion based on the results
or data. The conclusion may support or
reject the hypothesis.
conclusion
What is ...
example
1. Does vitamin C help to cure a common cold?
2. Read scientific journals and books,
interview friends and family, talk to
medical professionals.
3. Vitamin C does help to reduce the number
of days a person suffers from the common
cold.
4. To test the hypothesis, two groups of 100
cold sufferers are selected. Group A is
given 1,000mg of vitamin C and group ...
5. The following data is collected:
6. Vitamin C does not have an effect on
the duration of the common cold,
(rejects the hypothesis)
Theories - Explanations that apply to a
broad range of phenomenon and that are
supported by experimental evidence.
Example...
Scientific Law- a statement that describes
some aspect of a phenomenon that is
always true.
Examples:
• Law of Gravity
• N...
Scientific method
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Scientific method

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Scientific method

  1. 1. • The scientific method was developed so scientists could test possible explanations to questions, and allow others to verify the results
  2. 2. • The scientific method begins when a person asks a question. For example, "Do the seeds of a particular plant species need light to germinate?" PROBLEM What are you trying to prove, discover, or learn about?
  3. 3.  The question is usually followed by a thorough search for information about the topic. Gather information about what has already been learned about the problem.
  4. 4.  Hypothesis- a possible explanation for an observed set of facts. Based on your research, what do you think the solution to the problem is? Sometimes, this is referred to as an educated guess.
  5. 5.  The experiment must be done under controlled conditions. This means all factors that affect the results of the experiment (called variables) must be controlled except for the variable being studied. experiment A carefully designed procedure used to test the hypothesis.
  6. 6.  A collection of information and data about the experiment. record/analyze data This is a careful examination of the information gathered during the experiment.
  7. 7.  Make a conclusion based on the results or data. The conclusion may support or reject the hypothesis. conclusion What is the outcome of the experiment? Does the data collected prove or disprove your hypothesis?
  8. 8. example
  9. 9. 1. Does vitamin C help to cure a common cold?
  10. 10. 2. Read scientific journals and books, interview friends and family, talk to medical professionals.
  11. 11. 3. Vitamin C does help to reduce the number of days a person suffers from the common cold.
  12. 12. 4. To test the hypothesis, two groups of 100 cold sufferers are selected. Group A is given 1,000mg of vitamin C and group B is given a placebo (sugar pill) each day for one week beginning with the first day of cold symptoms.
  13. 13. 5. The following data is collected:
  14. 14. 6. Vitamin C does not have an effect on the duration of the common cold, (rejects the hypothesis)
  15. 15. Theories - Explanations that apply to a broad range of phenomenon and that are supported by experimental evidence. Examples: • Big Bang Theory • Cell Theory • Theory of Global Climate Change
  16. 16. Scientific Law- a statement that describes some aspect of a phenomenon that is always true. Examples: • Law of Gravity • Newton's Laws of Motion • The law of Stratigraphic Succession
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