What evidence did Lord Kelvin and Charles Darwin each use to support their conclusions about the age of the Earth?Kelvin's evidenceDarwin's evidenceAnswer BankWater bodies accumulate sediment in a predictable manner, and the rate of accumulation is measurable.The temperature of rocks in mine shafts shows how long the solid Earth has been cooling.Counting sedimentary rock layers in geologic formations gives an estimate of the rocks' ages.Heat moves through a solid, such as rock, at a predictable and measurable rate as the solid cools.

Answered: What evidence did Lord Kelvin and…

Human Anatomy & Physiology (11th Edition)

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Author:Elaine N. Marieb, Katja N. Hoehn

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Chapter1: The Human Body: An Orientation

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What evidence did Lord Kelvin and Charles Darwin each use to support their conclusions about the age of the Earth?
Kelvin's evidence
Darwin's evidence
Answer Bank
Water bodies accumulate sediment in a predictable manner, and the rate of accumulation is measurable.
The temperature of rocks in mine shafts shows how long the solid Earth has been cooling.
Counting sedimentary rock layers in geologic formations gives an estimate of the rocks' ages.
Heat moves through a solid, such as rock, at a predictable and measurable rate as the solid cools.

Expert Solution

Step 1

Kelvin evidence:-

Based on the time required for an initially uniform and hot thermal structure to decay to the presently observed surface temperature gradient, is briefly reviewed.

Kelvin calculated the age of Earth by using thermal gradients, and arrived at an estimate of 100 million years old which he later reduced to 20 million years.

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