earth science
TRANSCRIPT
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EARTH SCIENCE
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WHAT IS EARTH SCIENCE?
The study of Earth’s interior, rocks and soil, atmosphere, oceans and outer space.
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SEARTH SCIENCE IS ABOUT CONNECTIONS
Today scientists look more for the connections among the different parts of the Earth- its
oceans, atmosphere, living things and rocks and soil.
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HEAT ENERGY FROM INSIDE THE EARTH AND RADIATION FROM THE SUN PROVIDE ENERGY FOR EARTH’S PROCESSES.
EARTH SCIENCE VOCABULARY• Energy- the ability to cause
change.• Evaporation- the process by
which liquid changes into gas.
• Convection- hot material rises, cools, then sinks until it is heated enough to rise again.
• Radiation- energy that moves in certain types of waves.
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WHY IS EARTH SCIENCE IMPORTANT?
Understanding Earth’s processes makes it possible to:
• Know what types of crops to plant and when to plant them
• Know when to watch for dangerous weather
• Predict a volcano’s eruption in time to save people
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CHAPTER 1: VIEWS OF EARTH TODAYBIG IDEA:
Modern technology has
changed the way we view
and map the Earth.
KEY CONCEPT 1.1:
Technology is used to
explore the Earth system.
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Click on the following link to begin the journey courtesy of the Discovery Channel.
We know how fire destroys, but how does it create?
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THE EARTH SYSTEM Has four major parts:
Biosphere Hydrosphere
Geosphere Atmosphere
ANTHROSPHERE
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The FIVE Parts of the Earth System
System- an organized group of parts that work together to form a whole
ATMOSPHERE: THE MIXTURE OF GASES THAT SURROUNDS AND
PROTECTS THE EARTHCOMPOSITION:•NITROGEN (78%)•OXYGEN (21%)•CARBON DIOXIDE•WATER VAPOR•OTHER GASES
STUDIED WITH:•WEATHER BALLONS•PLANES•SATELLITES
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The FIVE Parts of the Earth SystemHYDROSPHERE: MADE UP OF ALL THE
WATER ON THE EARTH (OCEANS, LAKES, GLACIERS, RIVERS, UNDERGROUND)
WATER COVERS ¾ OF THE EARTH’S SURFACE• ONLY 3% IS FRESH WATER• NEARLY 70% IS IN GLACIERS AND POLAR ICE CAPSSTUDIED WITH:• DEEP –SEA VEHICLES• BUOYS• SATELLITE IMAGES• DIVING SUITSAFFECTS THE ATMOSPHERE WHEN WARM/COLD
OCEAN CURRENTS INTERACT WITH WIND CURRENTS
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The FIVE Parts of the Earth SystemBIOSPHERE: INCLUDES ALL LIFE
ON EARTH (IN THE AIR, WATER, AND ON LAND)
STUDIED WITH:• SATELLITE PHOTOS TRACK
YEARLY CHANGES IN PLANT AND ANIMAL LIFE
• SPECIAL EQUIPMENT ALLOWS SCIENTISTS TO STUDY PLACES WITHOUT HARMING THEM
WHEN TREES EXCHANGE GASES THE BIOSPHERE INTERACTS WITH THE ATMOSPHERE
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The FIVE Parts of the Earth SystemGEOSPHERE: ALL FEATURES ON
THE EARTH’S SURFACE (CRUST) ALONG WITH THE MANTLE, INNER AND OUTER CORES.
STUDIED WITH:• SATELLITE IMAGES• SOUND WAVES• COMPUTER MODELINGMATTER MOVES FROM THE
GEOSPHERE TO THE ATMOSPHERE WHEN VOLCANOES EXPLODE
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The FIVE Parts of the Earth SystemANTHROSPHERE: THE PART OF
THE ENVIRONMENT THAT IS MODIFIED BY HUMANS FOR USE IN HUMAN ACTIVITIES AND HABITATS
STUDIED WITH:• CENSUS• OBSERVING AND TRACKING
MOVEMENTS AND INFRASTRUCTURE
THE ANTHROSPHERE AND HYDROSPHERE INTERACT DURING A TSUNAMI.
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ALL FIVE PARTS OF THE SYSTEM SHAPE THE PLANET’S SURFACE
• Atmosphere and Hydrosphere- Not even the hardest stone can withstand the forces of wind and water. Over millions of years rain, wind, and moving water carved the Grand Canyon.
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• Geosphere: Landmasses pushing together have set off earthquakes and formed volcanoes and mountain ranges like the Andes around the world.
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• Biosphere: Plants, animals and humans have also changed the Earth. Walking or riding a bike over open land changes the surface of the planet.
How does this picture show all five parts of the Earth system working together?
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THE END