Is banded iron formation a chemical or detrital sedimentary rock? Explain. What will be an ideal response?
Banded iron formation is a chemical sedimentary rock, the precipitation of which was induced by the
presence of free oxygen in ocean water and the atmosphere reacting with reduced iron in seawater.
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Why do gyres rotate differently in the northern hemisphere than they do in the southern hemisphere?
A. Because Earth rotates from west to east B. Because Earth rotates C. Because Earth rotates from east to west
Meteorites disintegrate and burn up as shooting stars; meteoroids survive an impact event and a trip through Earth's atmosphere
Indicate whether the statement is true or false
Discuss the three types of energy sources and give examples of each
What will be an ideal response?
One important limitation when using potassium-argon for age-dating is that ________
A) potassium decays twice as fast as other isotopes B) potassium can only age-date rocks younger than 70,000 years old C) argon is a gas and may leak from minerals, throwing off measurements D) argon is unstable at surface conditions and easily weathered from rocks