GEOLOGIC TIME

Fossils are commonly found in _________ rocks.
 a. igneous    b. intrusive     c. metamorphic      d.extrusive     e. sedimentary

 Which of the following is not a use of fossils in geology:
 a. figuring out past environments     b. providing a record of the changes in life
 c. documenting evolution    d. providing a time line    e. giving a record of ocean-floor spreading

The ONLY valid tool for correlation of local sequences is:
 a. superposition   b. crosscutting   c. continuity d. fossils    e. inclusions

Which of the following is NOT used to figure out local sequences in relative dating?
 a. horizontality   b. superposition   c. continuity    d. fossils  e. inclusions

Dinosaurs, conifers and ammonites were most common during the:
 a. Cenozoic   b. Mesozoic   c. Paleozoic  d. Pre-Paleozoic   e. Age of man

Analysis of a rock indicates that when we consider the parent/daughter pair K/Ar, the percentages of  these are 6% and 94 % respectively. If the half life for this pair is 500 million years it is ______  years old:
 a. 500 miilion     b. 1 billion    c. 1.5  billion    d. 2 billion    e. 2.5 billion

Which of the following would have the greatest chance of being fossilized?
 a. a clam shell  b. mouse ears  c. feathers  d. footprints in the sands of time  e. worms.

What is the highest taxonomic level from among the following?
 a. genus    b. species   c. order    d. family    e. class

Fossils are used as indicators of:
 a. environment   b. evolution   c. time   d. all of these    e. none of these

Fossils are commonly found in _________ rocks.
 a. igneous  b. intrusive   c. metamorphic   d. extrusive  e. sedimentary

Analysis of a rock indicates that the rock contains K/Ar and the percentages of this parent/daughter pair  is 6% and 94 % respectively. If the half life for this pair is 500 million years we could say that:
 a. the rock is about half the age of the earth   b. the rock was formed near the time the earth was  forming  c. the rock must be extraterrestrial because it is older than the earth  d. there must be an  error in the dating process because the rock is too old  e. the rock was a newly made rock.