Question for Practice Test: Reading Comprehension - 61 Question _index_: The author of the passage would be most likely to agree with which of the following statements about the Milankovitch theory? A. It is the only possible explanation for the ice ages. B. It is too limited to provide a plausible explanation for the ice ages, despite recent research findings. C. It cannot be tested and confirmed until further research on volcanic activity is done. D. It is one plausible explanation, though not the only one, for the ice ages. E. It is not a plausible explanation for the ice ages, although it has opened up promising possibilities for future research. View Solution

It is the only possible explanation for the ice ages.

It is too limited to provide a plausible explanation for the ice ages, despite recent research findings.

It cannot be tested and confirmed until further research on volcanic activity is done.

It is one plausible explanation, though not the only one, for the ice ages.

It is not a plausible explanation for the ice ages, although it has opened up promising possibilities for future research.

Question for Practice Test: Reading Comprehension - 61 Question _index_: According to the passage, which of the following is true of the ratios of oxygen isotopes in ocean sediments? A. They indicate that sediments found during an ice age contain more calcium carbonate than sediments formed at other times. B. They are less reliable than the evidence from rocks on land in determining the volume of land ice. C. They can be used to deduce the relative volume of land ice that was present when the sediment was laid down. D. They are more unpredictable during an ice age than in other climatic conditions. E. They can be used to determine atmospheric conditions at various times in the past. View Solution

They indicate that sediments found during an ice age contain more calcium carbonate than sediments formed at other times.

They are less reliable than the evidence from rocks on land in determining the volume of land ice.

They can be used to deduce the relative volume of land ice that was present when the sediment was laid down.

They are more unpredictable during an ice age than in other climatic conditions.

They can be used to determine atmospheric conditions at various times in the past.

Question for Practice Test: Reading Comprehension - 61 Question _index_: The purpose of the last paragraph of the passage is to A. offer a note of caution B. introduce new evidence C. present two recent discoveries D. summarize material in the preceding paragraphs E. offer two explanations for a phenomenon View Solution

summarize material in the preceding paragraphs

offer two explanations for a phenomenon

Question for Practice Test: Reading Comprehension - 61 Question _index_: In the passage, the author is primarily interested in A. suggesting an alternative to an outdated research method B. introducing a new research method that calls an accepted theory into question C. emphasizing the instability of data gathered from the application of a new scientific method D. presenting a theory and describing a new method to test that theory E. initiating a debate about a widely accepted theory View Solution

suggesting an alternative to an outdated research method

introducing a new research method that calls an accepted theory into question

emphasizing the instability of data gathered from the application of a new scientific method

presenting a theory and describing a new method to test that theory

initiating a debate about a widely accepted theory

Question for Practice Test: Reading Comprehension - 61 Question _index_: It can be inferred from the passage that the isotope record taken from ocean sediments would be less useful to researchers if which of the following were true? A. It indicated that lighter isotopes of oxygen predominated at certain times. B. It had far more gaps in its sequence than the record taken from rocks on land. C. It indicated that climate shifts did not occur every 100,000 years. D. It indicated that the ratios of oxygen 16 and oxygen 18 in ocean water were not consistent with those found in fresh water. E. It stretched back for only a million years. View Solution

It indicated that lighter isotopes of oxygen predominated at certain times.

It had far more gaps in its sequence than the record taken from rocks on land.

It indicated that climate shifts did not occur every 100,000 years.

It indicated that the ratios of oxygen 16 and oxygen 18 in ocean water were not consistent with those found in fresh water.

It stretched back for only a million years.

Question for Practice Test: Reading Comprehension - 61 Question _index_: It can be inferred from the passage that precipitation formed from evaporated ocean water has A. the same isotopic ratio as ocean water B. less oxygen 18 than does ocean water C. less oxygen 18 than has the ice contained in continental ice sheets D. a different isotopic composition than has precipitation formed from water on land E. more oxygen 16 than has precipitation formed from fresh water View Solution

the same isotopic ratio as ocean water

less oxygen 18 than does ocean water

less oxygen 18 than has the ice contained in continental ice sheets

a different isotopic composition than has precipitation formed from water on land

more oxygen 16 than has precipitation formed from fresh water

Question for Practice Test: Reading Comprehension - 61 Question _index_: It can be inferred from the passage that calcium carbonate shells A. are not as susceptible to deterioration as rocks B. are less common in sediments formed during an ice age C. are found only in areas that were once covered by land ice D. contain radioactive material that can be used to determine a sediment’s isotopic composition E. reflect the isotopic composition of the water at the time the shells were formed View Solution

are not as susceptible to deterioration as rocks

are less common in sediments formed during an ice age

are found only in areas that were once covered by land ice

contain radioactive material that can be used to determine a sediment’s isotopic composition

reflect the isotopic composition of the water at the time the shells were formed

Question for Practice Test: Reading Comprehension - 61 Question _index_: According to the passage, one advantage of studying the isotope record of ocean sediments is that it A. corresponds with the record of ice volume taken from rocks on land B. shows little variation in isotope ratios when samples are taken from different continental locations C. corresponds with predictions already made by climatologists and experts in other fields D. confirms the record of ice volume initially established by analyzing variations in volcanic emissions E. provides data that can be used to substantiate records concerning variations in the amount of sunlight received by the Earth View Solution

corresponds with the record of ice volume taken from rocks on land

shows little variation in isotope ratios when samples are taken from different continental locations

corresponds with predictions already made by climatologists and experts in other fields

confirms the record of ice volume initially established by analyzing variations in volcanic emissions

provides data that can be used to substantiate records concerning variations in the amount of sunlight received by the Earth

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