Earth History - MARS 1010 - Lecture 1 Origin of the Earth...

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MARS 1010 - Lecture 1 Origin of the Earth System Dr. Yager Read Chapter 2 in Sverdrup and Armbrust Note that this chapter includes useful information about mapping (not covered in lecture) that will be very useful to your first lab. 1. What evidence (data) is used to argue for an expanding universe that began with a central ancient explosion (the Big Bang)? How long ago do we think this happened? What data is used to estimate the age of the universe? Evidence that is used to argue for an expanding universe that began with a central explosion provides the outward force to overcome gravity. This happened 15 billion (+ or -) years ago. The age of the universe is estimated by measuring the velocities of stars since they are all moving outward from where the big bang occurred. 2. How does our understanding of the Big Bang illustrate the scientific method? The big bang theory uses the scientific method to ask questions and further explore the theory. 3. How did our solar system form? How are the four inner planets (Mercury, Venus, Earth,
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Earth History - MARS 1010 - Lecture 1 Origin of the Earth...

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