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The age of the Earth is most precisely determined by 1. careful analysis of ancient written records. 2. fossil analysis. 3. radiometric dating of its oldest.

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Presentation on theme: "The age of the Earth is most precisely determined by 1. careful analysis of ancient written records. 2. fossil analysis. 3. radiometric dating of its oldest."— Presentation transcript:

1 The age of the Earth is most precisely determined by 1. careful analysis of ancient written records. 2. fossil analysis. 3. radiometric dating of its oldest rocks. 4. radiometric dating of meteorites.

2 The age of the Earth is most precisely determined by

3 She bathes in the warmth of a natural hot spring located in the quiet and peaceful mountains. Interestingly enough, the spring water is warmed by 1. fires beneath the Earths surface. 2. the Earths own natural heat. 3. solar power. 4. nuclear power.

4 She bathes in the warmth of a natural hot spring located in the quiet and peaceful mountains. Interestingly enough, the spring water is warmed by

5 An archaeologist extracts a sample of carbon from an ancient ax handle and finds that it emits an average of 10 beta emissions per minute. She finds that the same mass of carbon from a living tree emits 40 betas per minute. Knowing that the half-life of carbon-14 is 5730 years, she concludes that the age of the ax handle is about 1. 2865 years. 2. 5730 years. 3. 11460 years. 4. 17190 years.

6 An archaeologist extracts a sample of carbon from an ancient ax handle and finds that it emits an average of 10 beta emissions per minute. She finds that the same mass of carbon from a living tree emits 40 betas per minute. Knowing that the half-life of carbon-14 is 5730 years, she concludes that the age of the ax handle is about


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