28. Give an example of an instrument or method of measuring absolute time?

Question

21. Describe how each of the following could cause plate movements?

Earthquakes

Tsunamis

Volcanoes

22. Name two conditions that help the process of fossilization?

23. Name the era for each of the following:

Age of mammals; age of man

Age of the reptile and the dinosaur

Age of the invertebrate, fish and amphibian

Birth of the earth; earliest life forms

24. Describe the principle of superposition.

25. We have a radioactive isotope - RI-1. It decays and forms daughter element 1- DE-1. The half-life of RI-1 is 12 my (million years). A geologist has used radiometric dating to determine that the rock being dated has an approximate age of 36 my. How many half lives would that represent?

26. Define inferences and be able to identify them.

27. Distinguish between absolute time and relative time. and give an example of each.

28. Give an example of an instrument or method of measuring absolute time?

Answer 1

28.atomic clock

Answer 2

Simultaneous  implosion and explosion of supernova

Answer 3

28.  There is no such thing as absolute time.  This is a consequence of Einstein's theory.

25.  Three.

27.  See 28.