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Author Question: How did the science community piece together the absolute ages of rocks in the last half of the ... (Read 40 times)

Jkov05

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on: Jul 16, 2018
How did the science community piece together the absolute ages of rocks in the last half of the twentieth century?
 
  A) based on where the rock is found, scientists know exactly how old the rock is
  B) based on the type of rock, scientists know exactly how old it is
  C) they never did
  D) through the measurement of radioactive decay

Question 2

A student concluded, The rock record is incomplete because of weathering and erosion. Evaluate this statement.
 
  A) The statement is true.
  B) The statement is partially true; the student forgot to include metamorphism.
  C) The statement is partially true; the student forgot to include tectonic forces.
  D) The statement is partially true; the student forgot to include soft-shelled animals that are now extinct and not fossilized.


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jackie

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Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: A


Jkov05

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Reply #2 on: Jul 16, 2018
Correct answers!


jackie

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Reply #3 on: Jul 16, 2018
Great! Please up vote :D


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