Fossils

What is a way an organism can become a fossil?

• amber
• strata
• geologic column
• superposition

What causes an unconformity?

• water
• wind
• ice
• nondeposition and erosion

What is a geologic column?

• determining whether an event is older or younger
• an arrangement of rock layers in which the oldest rocks are at the bottom
• a law that states younger rocks lie above older rocks
• a break in the geologic record

What is an unconformity?

• a break in the geologic record created by erosion or nondeposition
• disturbed rock layers
• rock layer puzzles
• an intrusion

What type of unconformity is in the picture?

• disconformity
• nonconformity
• angular unconformity
• intrusion

What type of disturbed rock layer is show in the picture?

• tilting
• instrusion
• folding
• fault

Which is an example of a trace fossil?

• animal tracks
• coprolite
• burrows
• all of the answers given here

What type of fossil is a mold?

• a cavity made by a shell (cake pan)
• a type of fossil that forms when sediments fill in the cavity left behind by a shell

What type of fossil is a cast fossil?

• a cavity made by a shell (jello mold)
• a type of fossil that forms when sediments fill in the cavity (jello)

What is an example of an index fossil?

• t-rex fossils
• insect in amber
• trilobites or ammonites
• woolly mammoth fossils