Radiometric Dating: Unveiling Earth's Age and the Secrets of Carbon-14

Radiometric Dating: Unveiling Earth's Age and the Secrets of Carbon-14

Assessment

Interactive Video

Physics, Chemistry, Science

9th - 12th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial explains the concept of radiometric dating, focusing on carbon-14 and uranium-238 isotopes. It introduces the idea of half-life, illustrating how radioactive decay is a random process that can be statistically analyzed. The tutorial also discusses how these principles are applied to date the Earth and Neanderthal bones, using zircon crystals and carbon dating. The continuous nature of radioactive decay is highlighted, contrasting it with a coin-toss analogy to explain statistical predictability.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the estimated age of Earth according to the video?

6.5 billion years

5.5 billion years

4.5 billion years

3.5 billion years

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the half-life of carbon-14?

2,730 years

10,000 years

1,000 years

5,730 years

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to carbon-14 after 5,730 years?

It completely decays to nitrogen-14

Half of it decays to nitrogen-14

It doubles in amount

It remains unchanged

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the half-life of uranium-238?

10 billion years

4.5 billion years

1 billion years

1 million years

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the coin-toss analogy, what does getting a tail represent?

An atom splitting

An atom doubling

An atom decaying

An atom remaining stable

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is radioactivity considered a random process?

Because the decay of individual atoms is unpredictable

Because it occurs at a fixed rate

Because it only occurs in certain conditions

Because it can be influenced by external factors

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does a shorter half-life indicate about an isotope's radioactivity?

It is less radioactive

It is more radioactive

It is equally radioactive

It is not radioactive

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