Radiometric Dating Techniques and Insights into Earth's Geological History

Radiometric Dating Techniques and Insights into Earth's Geological History

Assessment

Interactive Video

Science, Chemistry, Geology

9th - 12th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video explains how geologists determine the age of rocks and the Earth using radiometric dating. It covers the concept of isotopes and half-life, focusing on carbon-14 and uranium isotopes for dating. The video also discusses the use of zircon crystals in dating and compares radiometric dating with other methods like tree rings and ice layers, highlighting the reliability of radiometric dating.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What year was the carving of Mount Rushmore completed?

1951

1961

1941

1931

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary technique used to determine the age of rocks?

Thermoluminescence

Radiometric Dating

Dendrochronology

Carbon Dating

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a half-life in the context of radiometric dating?

The time it takes for an isotope to double

The time it takes for a full isotope to decay

The time it takes for an isotope to become stable

The time it takes for half of the isotope to decay

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which isotope is commonly used for dating ancient rocks?

Potassium-40

Thorium-232

Uranium-238

Carbon-14

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the 'parent' in radiometric dating?

The stable isotope

The original radioactive element

The mineral trapping the isotopes

The rock formation

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What makes zircon crystals useful for radiometric dating?

They are easy to find

They are resistant to weathering

They trap uranium and lead isotopes

They are abundant in nature

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How old is the oldest zircon crystal found on Earth?

3.4 billion years

6.4 billion years

4.4 billion years

5.4 billion years

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