Why is radiometric dating a reliable method for determining numerical dates?
What will be an ideal response?
Answer: Each radioactive isotope used for dating has been decaying at a fixed rate since the formation of the minerals in which it occurs.
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Which of the following is a correct statement about cirrocumulus clouds?
A. They are larger than altocumulus clouds. B. They consist of ice crystals. C. They are middle clouds. D. They are so thin that the sun can be seen through them.
As waves pile up water onshore, the water may stream back offshore to create a(n) _______________
Fill in the blank with correct word.
Mudflows of volcanic ash are referred to as _____
a. talus b. avalanches c. heavings d. solifluctions e. lahars
When a meandering stream is incised into a gradually rising crust or bedrock, the result is a(n) ________
A) cut off B) entrenched meander C) delayed tributary junction D) stream terrace E) peneplain