the earth system’s four spheres objectives : 1) explain the 4 spheres of earth 2) explain how the...
TRANSCRIPT
The Earth System’s Four SpheresObjectives: 1) Explain the 4 spheres of
Earth2) Explain how the
spheres interact
Introduction Earth is able to support life because the
four spheres interact Atmosphere Geosphere Hydrosphere Biosphere
Energy moves back and forth
The Atmosphere Atmosphere: the
gaseous envelope surrounding Earth Made of a mixture of
gases Provides living things
with oxygen and Carbon Dioxide
Other gases absorb and alter rays from the sun
The Atmosphere Cont’d Due to changing
amounts of water vapor in the atmosphere High or low
humidity Change the
formation of clouds
The Atmosphere Cont’d Atmospheric
pressure causes wind
Storms are caused by water vapor, air pressure and energy
The Atmosphere Cont’d Earth is the only
planet in our solar system that has free oxygen
Supports the life forms
The Geosphere Geosphere: the
physical features of the planet (except water) Inside layers of
Earth Ocean basins
The Geosphere Cont’d Always changing Volcanic eruptions
form new land Mountains are
uplifted and eroded
Continents are always moving
Exit Ticket Explain the atmosphere and geosphere.
The Hydrosphere Hydrosphere: all the water at or near
Earth’s surface Oceans, lakes, rivers, groundwater, ice snow
The Hydrosphere Cont’d Only 3% of water
on Earth is freshwater 70% is frozen in
glaciers 30%
Groundwater, lakes, soil, water vapor, river water
½ of 1% is usable fresh water
The Hydrosphere Cont’d All water on Earth
is continuously recycles
The Biosphere Biosphere: the
living things on the planet The interactions
of the geosphere, atmosphere and hydrosphere make conditions to support life
The Biosphere Cont’d Includes all forms
of life Single-celled
protozoans, jellyfish, redwood trees, people, etc.
The Biosphere Cont’d Humans have
changed the Geosphere Oceans Atmosphere
One sphere can affect another
Exit Ticket Explain the hydrosphere and biosphere.
Interactions Among the Spheres
4 Spheres are constantly moving, changing, and interacting
A change in one sphere affects another
Exit Ticket Explain how interactions change the
spheres.
How Interactions Change the Spheres
Interactions takes many forms Single event Temporary change Constant change
Uniformitarianism: Earth is always changing, forces of change at work in the present is the same as the past
How Interactions Change the Spheres Cont’d Some changes can take thousands or millions
of years Erosion Atmospheric change
How Interactions Change the Spheres Cont’d Shorter changes
Disrupt bird nesting
Flooding Greenhouse Effect
Understanding Check Answer the
following question. Use complete
sentences. You may NOT use
your book. You MAY use your notes.
This is a quiz grade
1) Explain the 4 spheres of Earth.
2) Explain how the spheres interact.