GOL 106 Northern Virginia College Evidence for Snowball Earth Web Research 6 DIRECTIONS
1. Select one (1) of the following questions for research. Research sources of information can include Internet sources, books, articles, videos, etc. Every explanation must include a picture/diagram that helps detail your answer. Then post your answer to one of these in Web Research 6.
Discuss the evidence for Snowball Earth.
What is the Snowball Earth hypothesis?
What evidence exists that the Earth was covered with ice?
When did Snowball Earth events take place?
How did the Earth turn into a snowball? What caused it?
Provide pictures/diagrams to illustrate.
How did the continental crust of the Earth form?
How is the continental crust different from the oceanic crust?
What was there before continental crust formed?
Where do we find remnants of Earth’s earliest continental crust?
What type of rocks are these?
Provide pictures and/or diagrams to illustrate.
What lifeforms existed during the Archean?
What are stromatolites?
Discuss the importance of stromatolites in the formation of Earth’s modern atmosphere.
Do paleontologists believe that stromatolites were the earliest organisms on Earth? Why or why not?
Discuss and provide evidence for other lifeforms during the Archean.
Provide at least one picture or diagram.
What are banded iron formations?
Where do we find them?
Why are they so important relative to the early atmosphere on Earth?
Are they still forming today? Why or why not?
Provide a picture or diagram.
2. In Web Research 6
State the question(s) you selected to research.
Post a synopsis, based on the results of your research, with answers to the question (and the sub-questions) selected. In the synopsis, include a brief explanation of the significance of the knowledge you learned from your research (two paragraphs) and on the importance to historical geology (one paragraph).
Cite the reference source(s) of your research in proper citation format.
Grading Criteria
Demonstrates comprehension of research question through detailed explanations. 3 points
Applies concepts, definitions, etc. from assigned readings or other reference resources. 3 points
Includes an explanation of the importance to the study of Historical Geology. 2 points
Picture or diagram provided 1 point
Writing is clear, concise and free of spelling and grammatical errors. Uses APA Style to cite reference sources. 2 points
Comments to two (2) other students’ postings. 4 points
TOTAL 15 points
Do not worry about commenting on other students.