Earth Science Unit 8

What is the age of the Earth?

The principle that newer layers are formed on top of older layers used in relative dating

Which of these events is the youngest?

Which plants were dominant during the mesozoic.

The amount of time that it takes for 50% of a radioactive isotope to decay

Which of the following is NOT a period of the Mesozoic

The certain traits that organisms have that affect their ability to survive and reproduce

A fossil formed when an organism’s remains “turn to stone.”

Which animals are dominant during the cenozoic

The principle that individuals that are better adapted are more likely to survive.

Which animal like life forms where dominant during the precambrian

Which plant like organisms were dominant during the precambrian.

When all of the members of a species are no longer found living on the Earth

Which of the following are the shortest amount of time?

A fossil created that is wide spread but only around for a short time use in relative dating

The principle that undisturbed layers remain in a position parallel of the surface of the earth

Which of these events is an example of the law of Superposition

What is something geologists use separate the different time periods

Which plants developed the most recently?

An unconformity formed when layers of rock formover older rock layers that are tilted or folded

Which plants became dominant during the cenozoic.

Which plants were dominant during the late paleozoic.

Actual animal tissues that are found mummified, frozen, or encased in amber or tar.

A fossil created when a hard structure is buried, dissolved and filled in with minerals

Which of the following are the longest amount of time?

The principle that igneous intrusions and faults must be younger than the rocks they form in.

Which of the following are the shortest amount of time?

The principle that processes that we observe today occur the same now as they did in the past

Which plants were dominant during the early paleozoic.

Which of the following is NOT an eon of the precambrian

An unconformity formed when an erosional surface separates older rocks from younger rocks. 

The remains or traces of an organism preservedfrom the geologic past

Which animals were dominant during the paleozoic

Which of these layers is the oldest

An unconformity formed when two sedimentary rock layers are separatedby an erosionalsurface

Which of the following are the longest amount of time?

The amount of time that a rock has been around based on radiometric dating

Which of these events is an example of the principle of cross cutting?

Which animals were dominant during the mesozoic

Which of the following is NOT a period of the Paleozoic

Fossilized tracks, and burrows, or other things that show indirect evidence of prehistoric life

The approximate amount of age of a rock based on surrounding rock layers and fossils

The method that is used in finding the age of things that have died in the last 100000 years