Geologic Time & Rock Record Test

Front

Approximately how old is the Earth?

Back

4.6 billion years old

Front

The remains or traces of once-living organisms; which form when specific conditions occur that preserve an organism’s remains.

Back

Fossil

Front

Many fossils are the result of organisms dying near or in water.
Options: Bodies naturally decompose, and soft tissues like skin and eyes will decompose the fastest. The tissues that last the longest have the best chance to become fossils., Earth’s layers are created by depositing new layers of sediment on top of old ones., Water carries and deposits sediment. Objects underneath water are likely to be covered by new layers of earth more quickly than objects on land.

Back

Water carries and deposits sediment. Objects underneath water are likely to be covered by new layers of earth more quickly than objects on land.

Front

Fossils are more likely to be of hard body structures such as bones, teeth, and shells.

Back

Bodies naturally decompose, and soft tissues like skin and eyes will decompose the fastest. The tissues that last the longest have the best chance to become fossils.

Front

Older fossils are found in lower rock strata while more recent fossils are found closer to the surface.

Back

Earth’s layers are created by depositing new layers of sediment on top of old ones.

Front

The theory that changes in the earth's crust during geological history have resulted from the action of continuous and uniform processes.

Back

Uniformitarianism

Front

... states that in any undisturbed rock sequence deposited in layers, the youngest layer is on top and the oldest on bottom, each layer being younger than the one beneath it and older than the one above it.

Back

The law of superposition

Front

Assuming that each rock layer formed horizontally, which rock layer is the oldest?

Back

Layer D

Front

Assuming that each rock layer formed horizontally, which rock layer is the youngest?

Back

Layer A

Front

How does relative dating help determine the age of a fossil?

Back

It determines whether a fossil formed before or after another fossil.