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Course Description
Geology is the study of the world around us and the way it was formed. The study expands beyond the earth and includes the building blocks of the whole universe.Without the study of geology, it would have been very difficult to build the modern world around us. For one thing, it would have been impossible to locate building materials for our roads, houses, and office buildings. Without ready access to metals like gold, we would never have been able to make the wide range of electrical devices like cell phones and digital cameras that we all depend on.
The study of geology is about more than just identifying rocks or finding mineral deposits. It is the study of how all Earth's systems work together so that we can work with nature instead of against it, and we can have a better grasp of the future implications of our actions on the world around us.
An understanding of geology and the Earth's systems has become critical in a wide range of fields. It's not just miners, oil riggers and college professors who study the story of the rocks: it is also civil engineers, architects, urban planners, government officials, and investors.
In this course, you will learn about: Geology History; Fossils and Earth History--Geologic Time; Fossils and Earth History--TheEons and Eras; Rock types; Geomagnetism; Plate Tectonics; Recycling and Renewal; Erosion; The Rock Cycle; Rocks and Minerals; Gemstones and Mining.
Course Lessons
Lesson 1 : Introduction
Geology is all about the earth. It is the study of the world around us and the way it was formed. In the broader scope of things, the study expands beyond the earth and includes the building blocks of the whole universe.
Lesson 2 : Geology History
In the beginning, people were just trying to find the best kinds of rocks to make arrowheads, or to use in a slingshot.
Lesson 3 : Fossils and Earth History--Geologic Time
When people talk about how long ago something happened, they often say "not too long ago," or "a long time ago." But the definitions of these expressions tend to vary with the age of the speaker.
Lesson 4 : Fossils and Earth History--The Eons and Eras
Lasting only 65 million years, the Cenozoic is the modern-day world we know--the age of mammals, birds, flowering plants, and insects.
Lesson 5 : Rock Types
Igneous rocks are formed when hot magma cools. There are two different kinds of igneous rocks: Plutonic (intrusive) and volcanic (extrusive).
Lesson 6 : Geomagnetism
The earth has its own magnetic field. This is why compasses point north. Compasses have been used for centuries as a reliable navigation tool for travelers on land and sea, and they were especially helpful when the sun or stars were behind clouds.
Lesson 7 : Plate Tectonics
Ever since its earliest days, the Earth has been constantly changing and recreating itself. Even today, it continues to move and evolve.
Lesson 8 : Recycling and Renewal
Okay, so we know that plates are making mountains, but what's happening to all the plates that keep sinking under other plates? Where does all this material go?
Lesson 9 : Erosion
In the previous chapter, we talked about how the backbones of the mountains are raised from the ground, but we have not yet discussed the thin blanket of soil that lies between the bedrock and the atmosphere.
Lesson 10 : Rock, Mineral, and Rock Cycle
Geologists often talk about the rock cycle. This is one illustration of the many ways the earth reuses everything. Take, for example, the Appalachian Mountains.
Lesson 11 : Rocks and Minerals
If you have ever gone for a walk and seen a pretty rock, you might have picked it up and admired it, but did you ever wonder where it came from, how it arrived where it is, how old it might be.
Lesson 12 : Gemstones and Mining
Unlike the very specific definition of a mineral, the term "gemstone" is much looser. It is an attractive stone or mineral that is polished and used to make jewelry.
Lesson 13 : Conclusion
The science of Geology started with the need to find minerals that would allow people to improve their basic quality of life.
Optional Certificates Awarded
Certificate of Merit
Certificate of Academic Excellence
Certificates may be awarded by the instructor at his/her own discretion and are based on student merit.
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This is a non-credit course, and is provided for your personal enrichment.
This course is not intended to be a substitute for any state, government, licensing, or educational requirements.
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