Chapter 2 A New View of the Earth

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Chapter 2A New View of the Earth
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2-1 The Scientists Mind

• A.   Three Scientists, Three Individuals
• a.   Who is Carl Sagan?
• b.   What is he famous for?

a noted astronomer and Pulitzer prize winner
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2-1 The Scientists Mind

• c.   Who is Enriqueta Barrera?
• d.   What does she do?
• e.   Who does Evan Forde work for?
• f. What does he feel is his greatest strength?
  

• She is the director of geobiology at the National
  Sciences Foundation.

NOAA
Observation
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2-1 The Scientists Mind

• B.   Different Lives, Common Goals
• a.   Where do scientists work?
• b. What do they all have in common?

Everywhere
They like to understand the world around them
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2-1 The Scientists Mind

• C.   Qualities of Scientific Thinking
• a.   Evidence-Material or data that can be
  measured and tested to verify their prediction.
• b.   Hypothesis-A tentative explanation for an
  observation or phenomenon.

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2-1 The Scientists Mind

• c.   Technology-The practical application of
  science to meet human needs.
• d. The objective of scientific study is to
  understand the natural world.

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2-2 Scientific Methods of Inquiry

• A.    How Scientists Approach Questions
• a.   Scientific Inquiry-involves observing,
  asking questions, forming hypothesis, and sharing
  what has been learned.
• b. What did Dr. Custer do?

He studied groundwater levels
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2-2 Scientific Methods of Inquiry

• B.    Peer Review and Scientific Journals
• a.   Are you published?
• b.   Peer Review- Experts in the field read and
  review the paper for validity.
• c. Why is this important?

To find errors and test honesty
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2-2 Scientific Methods of Inquiry

• C.    The Importance of Testing Ideas
• a.   Why is it important to have your ideas
  tested?
• b. What happened in Utah?

To make sure you didnt mess up
Their results could not be repeated by other
scientists
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2-2 Scientific Methods of Inquiry

• D.    Scientific Theories and Laws
• a.   Theory-An explanation for observable events
  or facts for which no exception has been found.
• - Example

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2-2 Scientific Methods of Inquiry

• b.   Law-They are generalizations about how the
  natural world behaves under certain conditions.
• -Example

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2-3 Scientists Tools

• A.   Tools to Study the Earth and Ocean
• a.   Tools can be big, small, cheap or expensive
• b. What are some examples?

binoculars, submarine, microscope, hammer..
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2-3 Scientists Tools

• B.   Tools to Study the Sky and Stars
• a.   What are some examples of weather
  instruments?
• b. What are some examples of Astronomy tools?

Weather balloon, thermometer, wind gauge.
Telescope, space ship.
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2-3 Scientists Tools

• C.   Tools with Many Uses
• a.   What two tools have revolutionized earth
  science?
• b.   Why?
• c. What is the most important tool?

Computers and Satellites
The mind