Transcript An Introduction to Earth Science

An Introduction to
Earth Science
Unit 1
What is Earth Science?
Definition – the study
of Earth and its
neighbors in space.
4 subdivisions of Earth
Science:
Geology
Oceanography
Metreology
Astronomy
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1. Geology
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Study of planet
Earth
Areas of Geology
Physical Geology
The examination of
the materials that
make up the Earth
 And the explanations
for the processes
that shape the Earth.
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Historical Geology
Understanding Earth’s
long history.
2. Oceanography
•The study of the
Ocean’s biology,
chemistry and
geology.
3. Meteorology
•The study of the
atmosphere, weather
and climate.
4. Astronomy
The study of the
universe.
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Earth science is an ever evolving science
because the Earth itself is CONSTANTLY
changing!
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A new section of Earth science is
environmental science.
Environmental
Science
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How humans
interact with/ and
their relationship
with the natural
Environment.
40th anniversary of Earth Day Video
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The Earth is divided into 4 major spheres.
Geosphere or
1. Hydrosphere
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Consists of all the
water on the Earth.
The oceans make up
97% of the water on
Earth
The other 3% is
freshwater. (we must
MAXIMIZE its use)
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Water is what makes
our planet unique!

We are the ONLY
planet with liquid
water.
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Water supports life

No water = No life
2. Atmosphere
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Thin gaseous layer
that surrounds the
planet
100 kilometers thick.
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Provides the air we
breathe
Protects us from the
Sun’s heat and
radiation
Provides our weather
and climate
3. Geosphere
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Divided into 4 main parts
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1.
2.
3.
4.
The Crust
The Mantle
The Outer Core
The Inner Core
Geosphere Cont.
1. Lithosphere
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Rigid outer layer of
the Earth – cool &
solid
Crust & uppermost
part of mantle.
2. Asthenosphere

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Plasticity – warm &
liquid
Lower mantle
4. Biosphere
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Includes all life on
Earth.

Extends from the ocean
floor to about a mile
into the air
Other Spheres
5. Cryosphere
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The Earth's surface
where water is in a
solid form
6. The Anthroposphere
Humans and our
constructions
(also called anthrosphere).
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Interactions between the Spheres
 All
of the spheres interact and
influence the others
 The hydrosphere, geosphere and
atmosphere ALL affect life
 Life affects and changes the
hydrosphere, geosphere and
atmosphere
All the Spheres interact with Each other.
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Work with your assigned
groups.
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Divide the white poster to
4 divisions and title them
with geosphere,
Atmosphere, Biosphere,
and Hydrospher.
Cut out the different items
or interactions and place
them in the appropriate
sphere or spheres.
Draw diagrams illustrating
each division
EARTH IS A SYSTEM!!!