If a magnetic stripe is 120 km wide and formed over 4 m.y., what would the rate of seafloor spreading be?
A. 116 km/m.y.
B. 30 km/m.y.
C. .03 km/m.y.
Answer: B
You might also like to view...
Why would a pile of gravel weather faster than a single solid boulder?
What will be an ideal response?
Which of the following would not typically be considered an Earth Science study?
A) studies of impact craters on the moon B) chemical refining of petroleum C) studies of volcanic eruptions D) studies of acid mine waters and the bacteria that live in those waters
The Exclusive Economic Zones established by the 1982 Law of the Sea Treaty
A. could be claimed by more than one nation, which will result in appeals to the United Nations for conflict resolution. B. include up to 200 nautical miles of the continental shelf offshore of a country's border or further if that country's petition to the United Nations is approved. C. encompass, in different areas, such diverse resources as fish, placers and metal-rich muds. D. include all of the choices.
Factories, sewage treatment plants, and oil wells are ________ sources of water pollution.
A. Tertiary pollutant B. Point C. Secondary D. Primary E. Nonpoint