How does seismicity on mid-ocean ridges differ from seismicity caused by converg

Question

How does seismicity on mid-ocean ridges differ from seismicity caused by convergent plate tectonics?
A. Mid-ocean ridge earthquakes are deeper

B. Convergent plate boundaries produce primarily transform motion

C. Mid-ocean ridge earthquakes are caused by sea level change

D. Convergent plate boundaries are characterized by Benioff zones

E. None of the above

Numerical age dating is more accurate than relative age dating.

A. True

B. False

The principle of fossil succession says:

A. fossil fuels are formed from buried organic matter

B. an inclusion is older than the rock in which it is found

C. fossil assemblages are found in a predictable sequence

D. sedimentary rocks form in horizontal layers

E. fossils are the remains and traces of once living things

An non-conformity is:

A. formed between layers of non-sedimentary rocks

B. requires a rise in sea level to form

C. forms from erosion of sedimentary rocks

D. forms from erosion of non-sedimentary rocks

E. formed between layers of sedimentary rocks

The principle of superposition says:
A. the oldest rock in an undisturbed sequence of strata is found at the bottom

B. sedimentary rocks form in layers parallel to the surface of the Earth

C. older fossils are found deepest inside the Earth

D. In a cross-section, the oldest rocks are found at the bottom

E. None of the above

Which of the following is not a relative age principle?
A. principle of fossil succession

B. principle of radiometric dating

C. principle of cross-cutting relationships

D. principle of superposition

E. principle of inclusion

Approximately how old is the oldest rock ever found on Earth?
A. 4,000 years

B. 400,000 years

C. 400,000,000 years

D. 4,000,000,000 years

E. 40,000,000,000 years

A radioactive isotope has a half-life of 20,000 years. Thus:
A. after 20,000 years, the half-life will be 10,000 years

B. after 20,000 years, half of the nuclei of the isotope will have decayed

C. after 20,000 years, twice the number of the daughter isotope will be formed

D. the age of the rock sample is 20,000 years

E. None of the above

The principle of cross-cutting applies only to:

A. sedimentary and some rocks

B. sedimentary and metamorphic rocks

C. metamorphic and igneous rocks

D. faults, unconformities and metamorphic rocks

E. None of the above

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In radioactive decay of an atom:

A. the atom becomes a member of a different element

B. the mass of the atom can not change

C. the number of protons can stay the same, but the number of neutrons always changes

D. the daughter isotope is half the mass of the parent isotope

E. None of the above

A zircon in a clastic sedimentary rock is subject to radiometric age dating of the isotopes of uranium it contains. Which of the following is true?

A. the testing will fail because the decay products of uranium are Noble gases

B. the testing should reveal the age of the sedimentary rocks

C. the testing will reveal that the sedimentary rock is the same age as the zircon

D. the testing will reveal the age of the zircon clast

E. None of the above

Which of the following is not a fossil fuel?
A. coal

B. oil

C. natural gas

D. wood

E. All of the above are fossil fuels

We are able to generate heat by burning coal because it contains so much uranium.

A. true

B. false

The oil window is:

A. the depth at which oil forms in the Earth

B. the range of temperatures under which oil can form

C. the time between extraction and production of oil

D. the range of sale prices for different kinds of oil

E. how an oil well generates pressure

How is coal formed?
A. decay of marine organic matter under oxidizing conditions

B. decay of dinosaur corpses deep underground

C. underground fires caused by lightning

D. alteration of plant material under anoxic conditions

E. None of the above

Which of the following is considered a renewal resource?
A. coal

B. oil

C. natural gas

D. wood

E. All of the above are renewable resources

Which of the following is true of the average granite rock?

A. its feldspar minerals contain abundant aluminum

B. it generally will not contain fossil fuels

C. it can be burned for fuel in a furnace

D. A and B above

E. None of the above

An ore must:

A. contain abundant quartz

B. contain native elements

C. contain ore minerals

D. Either B or C above

E. Both B and C above

Placer deposits are:

A. igneous rocks emplaced in plutons

B. usually formed by the action of moving water

C. were originally named for Placer, Kentucky

D. logically non-clastic sedimentary rocks

E. All of the above

Explanation / Answer

How does seismicity on mid-ocean ridges differ from seismicity caused by convergent plate tectonics?

D. Convergent plate boundaries are characterized by Benioff zones

Convergent plate boundaries are characterized by Wadati-Benioff Zone which are the zone for earthquakes.

Numerical age dating is more accurate than relative age dating.

A. True

Numerical age dating will tell the actual age.

Where as relative age dating will not tell the actual age but it tells which is younger or older only.

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