Past Ecosystems (HSC SSCE Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Which types of rocks work best for radiometric dating?
Which types of rocks work best for radiometric dating?
Igneous and metamorphic rocks
After two half-lives, what percentage of the original parent isotope remains?
After two half-lives, what percentage of the original parent isotope remains?
25%
What type of mineral grains does SHRIMP technology date?
What type of mineral grains does SHRIMP technology date?
Zircon
What is the age of the oldest rocks on Earth identified using SHRIMP?
What is the age of the oldest rocks on Earth identified using SHRIMP?
4.4 billion years
What is the maximum age that carbon-14 can accurately date?
What is the maximum age that carbon-14 can accurately date?
50,000 years
Why can't sedimentary rocks be reliably dated using radiometric methods?
Why can't sedimentary rocks be reliably dated using radiometric methods?
They contain mixed samples from sources
In luminescence dating, what does brighter luminescence indicate?
In luminescence dating, what does brighter luminescence indicate?
Longer burial time
What do oxygen isotope ratios () in ice cores reveal?
What do oxygen isotope ratios () in ice cores reveal?
Ancient water temperatures
How does the enhanced greenhouse effect differ from the natural greenhouse effect?
How does the enhanced greenhouse effect differ from the natural greenhouse effect?
Enhanced effect causes rapid climate change
In fission track dating, what does a higher density of tracks indicate?
In fission track dating, what does a higher density of tracks indicate?
The sample is older