Chapter 1 Section 2 Review

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Chapter 1 Section 2 Review

• Page 16
• Questions 1-8

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1. Describe one reason that a scientist might
conduct research.

• To explain what causes some natural phenomenon or
  to answer a question.

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2. Identify the steps that make up scientific
methods.

• The books answer
• Ask a question
• Form a hypothesis
• Test the hypothesis or make observations
• Draw conclusions

• More Specific
• State the problem
• Gather information
• Form a hypothesis
• Perform an experiment
• Analyze data
• Draw conclusions
• Report results

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3. Compare hypothesis to theory.

• A hypothesis is an idea based on observation that
  can be tested.
• A theory is an explanation based on testing and
  evidence that does not conflict with existing
  results or observations.

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4. Describe how scientists test hypothesis.

• By following a designed experiment that usually
  contains one independent variable and a control.

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5. Describe the difference between a dependent
variable and an independent variable.

• An independent variable can be changed by the
  experimenter
• A dependent variable changes as a result of a
  change in independent variables.

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6. Explain why scientific ideas that have been
subject to many tests are still considered
theories and not scientific laws.

• Some scientific ideas are still theories because
  they have not been shown to be true in all cases.

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7. Summarize how scientific methods contribute to
the development of modern science.

• By forming a framework that all scientists follow
  to establish scientific truth.

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8. Explain how technology can affect scientific
research.

• Technological development may lead to new and
  useful tools that help scientists explore areas
  they previously could not explore.

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The End