UNIT TWO: Earth’s Air and Water

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Presentation transcript:

UNIT TWO: Earth’s Air and Water WHAT IS EARTH SCIENCE? UNIT TWO: Earth’s Air and Water

Earth Science Biosphere Hydrosphere Geosphere Atmosphere We can visualize the Earth system as a set of four overlapping, interacting spheres. Lets take a closer look …. Biosphere Hydrosphere Geosphere Atmosphere

Earth Science is… The study of Earth’s interior, rocks and soil, atmosphere, oceans and outer space. EARTH SCIENCE IS ABOUT CONNECTIONS System- an organized group of parts that work together to form a whole

EARTH SCIENCE VOCABULARY 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.

The Four Parts of the Earth System ATMOSPHERE: THE MIXTURE OF GASES THAT SURROUNDS AND PROTECTS THE EARTH COMPOSITION: NITROGEN (78%) OXYGEN (21%) CARBON DIOXIDE WATER VAPOR OTHER GASES STUDIED WITH: WEATHER BALLOONS PLANES SATELLITES

The Four Parts of the Earth System HYDROSPHERE: 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 CAPS STUDIED WITH: DEAP –SEA VEHICLES BUOYS SATELLITE IMAGES DIVING SUITS AFFECTS THE ATMOSPHERE WHEN WARM/COLD OCEAN CURRENTS INTERACT WITH WIND CURRENTS

The Four Parts of the Earth System BIOSPHERE: 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

The Four Parts of the Earth System GEOSPHERE: ALL FEATURES ON THE EARTH’S SURFACE (CRUST) ALONG WITH THE MANTLE, INNER AND OUTER CORES. STUDIED WITH: SATELLITE IMAGES SOUND WAVES COMPUTER MODELING MATTER MOVES FROM THE GEOSPHERE TO THE ATMOSPHERE WHEN VOLCANOES EXPLODE