Earth's History: Fossils
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Question 11 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER]
What is radio active decay?
The preserved remains of an organism.
Atoms in an unstable element break down to form another element.
When things die and their remains are buried.
The time it takes for 1/2 of the radioactive atoms to decay in an element.
Question 12 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER]
Several different fossils were found in rock layers in a geologic column. Above these rock layers, the fossils were almost nonexistent. Which most likely explains these observations?
A nonconformity occurred
All the organisms migrated.
A period of mass extinction occurred.
Question 13 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER]
How is the geologic time scale divided?
major change in species
major change in geology
all of the above
Question 14 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER]
Which generalization can be made about the relative age of a fossil found in a sedimentary rock bed?
The fossil is younger than the rock layer above it.
The fossil was formed before the rock layer that contains it.
The fossil and the rock were formed in different environments.
The fossil was formed around the same time as the rock that contains it.
Question 15 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER]
Many fossils of large amphibians were found in an area that is currently barren desert. Which is most likely true?
The climate of the area was once much wetter than it is now.
Amphibians were once better at surviving in dry environments.
The amphibians migrated there after a catastrophic event destroyed their habitats.
The amphibians are not native to the area and their bones were brought there by other animals.
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