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EarthsSpheres.notebook
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November 04, 2011
Sep 31:20 PM
TP: How do the spheres of the earth make up its systems?
Do now: Describe what occurred in Vermont & upstate NY following Hurricane Irene?
Homework:
Oct 141:12 PM
Oct 141:17 PM Oct 141:22 PM
EarthsSpheres.notebook
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November 04, 2011
Oct 1711:44 AM
TP: What is geography?
Do Now: Can you name 3 different formations of land? How are they different?
HomeworkRd pp. 3439P. 39 #1Draw a poster illustrating these landforms. Name an example of where you would find it
Sep 31:28 PM
What is Geography?
Geography study of Earth's phenomena, including people and their environment.
Geographers seek to understand: why one place is different from another why people live where they do why volcanoes are found where they are, etc. Geographers ask the questions; where and why? Where things are located and why they are found where they are. Geography is a spatial science. Geographers examine the distribution of people, diseases, rock types, climate types, etc. This is what we call the geographical approach to scientific inquiry.
Sep 31:44 PM
Five Key Themes in Geography
Location: Absolute and relative location on Earth. Location answers the question...where?
Region: Portions of Earth's surface that have uniform characteristics
Movement: Movement, circulation, and communication across Earth's surface. Examples would be wind and ocean currents.
HumanEarth Relationships: Humans and the environment. Oldest theme.
Place: Tangible and intangible living and nonliving characteristics that make each place unique
Oct 1711:49 AM
Teaching Point (TP): How do the biospheres of the earth work together?
Do Now: List the 4 spheres of the earth?
EarthsSpheres.notebook
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November 04, 2011
Sep 31:48 PM
What is a System? A system is a group of interrelated, interdependent parts that form a complex whole. Actions that affect one component (part) will ultimately influence everything else.
Example of a system
Heavy rainfall increases stream velocity which in turn increases channel erosion. More erosion increases channel width. This increase in surface area increases external friction and friction decreases the stream's velocity. See, one change (rainfall) causes all of these changes within the stream system.
Oct 171:29 PM
Sep 310:50 PM
+ Lithosphere rocks, earth materials+ Hydrosphere water+ Atmosphere air+ Biosphere plants and animals
What powers this system?What are the "spheres" of this system?Where is this system?
http://www.classzone.com/books/earth_science/terc/content/investigations/es0103/es0103page02.cfm
Oct 1811:49 AM
TP: To examine the details of the spheres of earth
Do Now: Describe at least 2 interaction between the lithosphere and hydrosphere in picture below
Homework List an interaction for each pair of spheres
EarthsSpheres.notebook
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November 04, 2011
Oct 1811:55 AM Sep 311:08 PM
The diagram shows the main components of the earth:
Oct 1811:43 AM
Hydrosphere liquid H2O (water) Oceans, lakes, rivers, streams, underground water, frozen water(___________) known as cryosphere
Oct 1811:45 AM
Atmosphere gaseous layer that surrounds earth• Troposphere bottom 10 km or so, (from a Greek word for "turning.") The sun warms the surface, but warm air rises, and as it rises, it expands and cools. Then the cool air sinks. This constant churning creates the weather.
• Stratosphere Above 10 km or so, air is too thin for warm air from the surface to continue rising. stable and stratified, with cold air at the base and warm air above. Because it is so stable, Airplanes fly at the lower boundary of the stratosphere.
• Ozone Layer Near the top of the stratosphere, solar ultraviolet causes oxygen to form ozone (O3). Ozone absorbs solar ultraviolet and helps protect the surface.
EarthsSpheres.notebook
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November 04, 2011
Oct 1811:43 AM
Biosphere• The domain of life, from several kilometers deep in the lithosphere to 10 km or so above the surface.• On land, the life layer is the zone of interactions among the biosphere, lithosphere and atmosphere.
Sep 310:56 PM
Lithosphere about 25% 0f earth's surface
• Earth is slightly wider atthe equator than from North Pole to South Pole.This is called:oblate spheroid", "oblate ellipsoid", or "geoidal". • There are differences in the terrain all over the earth.• Relief refers to the difference in elevation between the highest and lowest points in an area.
Sep 311:11 PM Sep 311:03 PM
Other measurements of Earth you should be familiar with...
Radius: distance from center to the surface = 3,950 miles
Diameter: 2 x radius (distance from one point on the surface to the other side, passing through the center of the earth) = 7,900 miles (without the bulge)
Circumference: greatest distance around the Earth's surface = 24,900 miles.
Interesting Fact: First accurate estimate of circumference was by Eratosthenes (276-195 BC) = 26,700 miles. Whether or not Eratosthenes or his contemporaries made errors in their calculations, it is evident that even at this early time, much was known about the shape and size of the Earth.
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November 04, 2011
Sep 311:07 PM
