What is Earth Science What are the Earth Systems four Spheres What are cycles and how do they work System A kind of model often used to describe the natural world Closed System ENERGY enters and may leave but MATTER does not leave ID: 537721
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Slide1
Earth as a System
What is Earth Science?
What are the Earth System’s four Spheres?
What are cycles and how do they work?Slide2
System: A kind of model often used to describe the natural world.Closed System: ENERGY enters and may leave, but MATTER does not leave
Open System
: ENERGY and MATTER are free to enter and leave
Is the Earth an Open or Closed System?Slide3
Earth is considered closed, there are a few exceptions: hydrogen escapes & meterorites
enter.Slide4
VolcanoEnergy is released, matter released as lavaLight bulb
Electrical Energy enters, light is released
Tree
Sunlight, water, & Carbon Dioxide in, water and oxygen released, seeds and leaves drop to ground
Ocean
Sunlight enters, water enters through runoff and precipitation, water leaves through evaporation
Boiling WaterHeat enters, heat and vapors are released
OPEN or CLOSED?Slide5
PopulationResourcesImpact
Science helps educate us and find solutions!!!
Humans and the planet EarthSlide6Slide7
Atmosphere
:
gaseous envelope surrounding the Earth.
Provides Oxygen & Carbon Dioxide, also absorbs and blocks harmful radiation. Where all weather occurs.
Geosphere
: all physical features of the Earth (except water) such as rocks, mineral resources, metals, mountains, beaches, and lithospheric
plates.
Hydrosphere:
Includes all of Earth’s water including oceans, rivers, lakes, and groundwater, it is continually recycled. 97% salt water, 3% fresh water, 1% usable.
Biosphere:
All living things
Discuss interactions among the Spheres
The Earth System’s four SpheresSlide8
Identify the 4 SpheresSlide9Slide10
Carbon CycleSlide11
Carbon in our EarthSlide12
The movement of Energy into and out of the Earth SystemA.K.A. The Energy BudgetBalance
is the Key
: equal energy in and out
The Energy CycleSlide13
Solar Energy
99.985%
of total energy
It comes from nuclear reactions in the sun
Drives
winds
, ocean currents, waves, and
weather
.Slide14
Geo means EarthThermal means Heat
0.013%
Drives the movement of
Earth’s crust
,
Volcanoes
, Earthquakes, and GeysersImportant role in the
Rock Cycle
Geothermal EnergySlide15
0.002% of the energy budgetResults from the moon’s pull on the Earth’s
oceans
Powerful enough to slow down the Earth
Tidal Energy