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G112 Exam 1

For G112 at IUSB Spring 2014

QuestionAnswer
When did the Big Bang occur? 14 Billion years ago.
When was the expansion of the universe discovered and by whom? 1929 Hubble.
How was the Doppler Effect shown? Red Shift
When was Background Radiation discovered? 1965
Which planet type is rocky? Terrestrial
Which planet type is gaseous? Jovian
How old is the earth? 4.6 Million Years
How did the earth form? Meteor impacts, gravitational compression, radioactive decay.
What is the density of granite? 2.7 g/cm^3
What is the density of basalt? 3.0 g/cm^3
When did plate tectonic theory arise? 1960's
What did Edward Suess hypothesize and how? Gondwana from tree ferns.
When did Taylor Show the Mid Atlantic Ridge? 1910
When did Wegener provide evidence for continental drift? 1915
What evidence did Wegener show for continental drift? Continental fit, rock sequences, glaciers, fossils.
When did Hess give evidence for seafloor spreading? 1962
How old is oceanic crust? 180 Million Years
How old is continental crust? 3.9 Billion Years
Examples of Divergent plate boundaries: East African Rift, Red Sea, Gulf of California.
Examples of Ocean to Ocean Convergent plate boundaries: Aleutian, Tonga, Philippines, Japanese Islands
Examples of Continent to Ocean Convergent plate boundaries: Andes and Cascade Mountains
Examples of Continent to Continent Convergent plate boundaries: Himalaya's and Appalachians
Example of Transform plate boundary: San Andrea's fault
What constitutes a mineral? natural, inorganic, crystalline solid.
How many minerals are there? 3500
What percent of crust are Silicates? 95%
What are igneous rocks called when crystallized from magma? Plutonic
Aphanitic Fine Grained
Phaneritic Course Grained
Porphyritic Mixed Grains
Created by: 1486802684
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