Geologic Time

A large amount of dust found in a layer of ice in an ice core can indicate_________________________.

• Warm temperatures

• Low levels of volcanic activity.

• High levels of volcanic activity.

• Cold Temperatures

In a tree core sample, a wide tree ring represents_____________.

• A cold growing season

• A warm growing season

• A season with very little precipitation

• Both A and C

The diagram below shows the cross section of rock layers for an area. What geologic process is responsible for the change in shape of the top of rock layer C? 

• Deposition

• Erosion

• Volcanic Activity

• Igneous Intrusion

According to cross-cutting relationships, a fault or fracture is always:

• Older than the rock it cuts through

• Younger than the rock it cuts through

• The same age as the rock it cuts through

In order for a fossil to be a good index fossil it must:

• Be widely distributed

• Be found in a relatively small area

• Be found in a relatively short time frame

• Be found throughout history

What type of fossil isn’t really the preserved remains of an organism but rather “biologic activity” of an organism?

• Mold Fossil

• Cast Fossil

• True fossil

• Trace Fossil

What type of fossil is considered the best fossil because it gives the most information?

• True Fossil

• Trace Fossil

• Mold Fossil

• Petrified Fossil

What can you predict about fossils of different organisms found in the same rock layer? 

• One organism must have fed on the other organisms

• ONe organism must have caused the extinction of the other organisms

• The organisms must have lived at the same time

• None of these

 Fossils are found in:

• Sedimentary rock

• Igneous rock

• Metamorphic rock

• All of these types of rock

What is a fossil?

• An extinct species

• A type of rock

• A type of fuel

• The preserved remains of a once living organism