How is the age of Earth measured?
A) by counting tree rings
B) by analyzing the strength of Earth's magnetic field
C) by studying the ratios of radioactive materials in rocks
D) by measuring the amount of heat the planet emits into space
Correct Answer:
Verified
Q35: What might explain how the core formed?
A)
Q36: Why is the core hot?
A) from the
Q37: Carbon-13 is a radioactive isotope. About half
Q38: How is the age of a rock
Q39: Suppose that we have a sample of
Q41: _ and _ are common in regions
Q42: The process in which two tectonic plates
Q43: How fast are Earth's plates moving due
Q44: The process by which material heated from
Q45: Within the mantle, how is heat transported
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