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INTRODUCTION TO EARTH SCIENCE

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INTRODUCTION TO EARTH SCIENCE Welcome What is Earth Science? Earth Science is the study of our planet, its changing systems and its place in the universe. – PowerPoint PPT presentation

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Title: INTRODUCTION TO EARTH SCIENCE


1
INTRODUCTION TO EARTH SCIENCE
  • Welcome

2
What is Earth Science?
  • Earth Science is the study of our planet, its
    changing systems and its place in the universe.
  • Includes using standard methods to make
    observations, as well as recording and analyzing
    data to draw conclusions.

3
Branches of Earth Science
  • Geology-the study of rock materials and how the
    solid earth changes.
  • Meteorology-the study of the changing conditions
    of the atmosphere.
  • Astronomy-the study of earths motions and the
    nature of other objects in space

4
Observation and Measurement
  • Observation-information received directly from
    any of our five senses.
  • In some cases instruments extend our senses.
  • Measurements are observations made using an
    instrument. They are expressed with numbers and
    units.

5
Scientific Notation
  • This helps scientists express very large or very
    small numbers easily.
  • Example
  • M x 10n
  • M is a number from 1.0 to 9.9
  • N is an exponent. If this is negative the number
    is a decimal.

6
Scientific Notation
  • Write 27,508 in scientific notation.
  • Determine M by moving the decimal point so that
    only one non-zero digit is to the left of the
    decimal.
  • 2.7508
  • Determine n by counting the number of places the
    decimal point has been moved.
  • 2.7508 x 10 4

7
Observations and Inferences
  • Observations are used to develop conclusions or
    inferences in cases where observations are
    difficult or impossible.

Observation Inference
Pebbles are rounded. These pebbles traveled down a stream.
8
Density
  • The ratio of mass (quantity of matter in object)
    to volume (how much space it takes up) of an
    object.
  • No matter how much of a substance you have the
    density will always remain the same. (Gold always
    19.3 g/cm3).
  • Also, if you cut in half density remains the same.

9
Graphs-present data visually
  • Coordinate system (x-axis and y-axis).
  • Line graph-shows change over time.
  • Bar graph-shows comparison.
  • Pie chart-shows how something is divided.
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