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Course: Science — Third Preparatory
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Science — Third Preparatory

Text lesson

Unit 4 — Dating Planet Earth

Science — Third Preparatory

Unit 4 — Dating Planet Earth

💡 High-Yield Exam Traps & Key Takeaways:

💡 High-Yield Exam Traps & Key Takeaways:

Comparison aspectMain ideaKeywords
Exam Trap
  • The rate of radioactive decay (half-life) is completely unaffected by physical temperature
  • pressure
  • chemical reactions
  • or magnetic fields
rateradioactivedecayhalf
Index Fossil Criteria
  • An ideal index fossil must possess three strict attributes: 1. Short chronological lifespan
  • 2. Wide global geographic distribution
  • 3. Abundant
  • easily recognizable morphology
idealmustpossessthree
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