8th Unit 4 Review

People who study fossils are called ____.

• meterologists
• fossilologists
• paleontologists
• fossil hunters

In which kind of rock do we usually find a fossil?

• sedimentary  rock
• metamorphic rock
• igneous rock

In order for a fossil to form, which of the following events must happen FIRST?

• Slowly, minerals in the water replace the bone.
• Sediment covers the bone.
• An animal dies.
• The bone is no longer a bone, but a rock copy.

What happens when a group of animals become extinct?

• All of its members have died.
• Only a few of its members are still living.
• The animals can no longer lay eggs.
• All of its members move to another place.

Where can the oldest layer be found?

• The top layer
• The middle layer
• They are all the same age
• The bottom layer

How are fossils created?

• Traces of organisms get turned into stone.
• Dead organisms are quickly buried for millions of years.
• Animals get trapped.
• All of the above

Which layer formed first?

• Rock Layer W
• Rock Layer X
• Rock Layer Y
• Rock Layer Z

Several wooly mammoth fossils have been found. Mammoths, which lived hundreds of thousands of years ago, were covered with thick fur.  Based on the evidence, mammoth fossils tell us that the area in which they are found - 

• has too many humans 
• no longer has large animals 
• was, at one time, very cold
• receives more rain that it used to 

Preserved parts or traces of animals and plants that lived in the past

• natural gas
• imprints
• photos
• fossils

Geologic processes that occur suddenly

• uniformitarism

• catastrophism

• geologic time scale