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EnglandGeologyQuick questions
The Earth and its history
Quick questions on Geochronological principles: superposition, cross-cutting, correlation and half-life - Eduqas GCSE Geology
5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is relative dating?Show answer
Relative dating works out which events came first, without giving an age in years. Three principles do most of the work:
What is absolute dating?Show answer
Relative dating gives only the order. To get an age in years, geologists use radiometric (radioactive) dating, which relies on the idea of half-life.
What is q1?Show answer
State the law of superposition. [1 mark]
What is q2?Show answer
A fault cuts through three beds but is covered by a fourth, undisturbed bed. Is the fault older or younger than the fourth bed? Explain.
What is q3?Show answer
Name the property of a radioactive isotope used in absolute dating. [1 mark]
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