**So you're taking a Midterm Exam...maybe this will help you out**
What is the Geosphere?
The geosphere is the solid Earth that includes continental and oceanic crust as well as the various layers of the Earth's interior.
The geosphere includes the lithosphere, the mantle, and the dense metallic cores.
The surface of Earth has identifiable major features--land masses (continents), oceans, rivers, lakes, mountains, canyons, and glaciers.
The movement of Earth's lithospheric plates causes both slow changes in the earth's surface (e.g., formation of mountains and ocean basins) and rapid ones (e.g., volcanic eruptions and earthquakes).
Earth's surface is built up and worn down by natural processes, such as rock formation, erosion, and weathering.
Physical evidence, such as fossils and radiometric dating, provide evidence for the Earth system's evolution and development.
Section 1: How Old is that Rock? Absolute vs. Relative Dating
Make a time scale based on your life so far. Divide the activities or events into eons, eras, periods, and epochs. Remember the longest subdivision of time (eons) and the shortest (epochs). Remember also that each unit of time is separated or marked by specific events. So, split up your time scale using major events from your life. My advice is to divide your life into Eons, then divide your Eons into Eras, etc. Name these as you like or use a few of the real names such as Pre-Cambrian, Phanerozoic, Paleozoic, Mesozoic and Cenozoic, and use them properly.
For example:
If you had a "Teenage Eon" for your teenage years and you moved to a new town, you could have a "Waitsfield Era" for your early years spent in Waitsfield and a "Waterbury Era" that sets apart the years after you moved. Each Era would be divided into Periods based on other smaller events, perhaps during the Teenage Eon, Waterbury Era you didn't have a girlfriend and then you did. You could have an early Waterbury Era Period called "Nogirlfriend Period" and a later one for the time that you had a girlfriend. Got it?.
The Paleomap Project: illustrating the plate tectonic development of the ocean basins and continents, as well as the changing distribution of land and sea during the past 1100 million years.
GeoSleuth Lab Presentation.ppt
Plate Tectonics Survey002.pdf
Seafloor Spreading Class Lab.doc
Class Earthquake Lab.pdf
Volcanic Environments.ppt
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