A trip through geological time

A hollow area in sediment in the shape of an organism is a 

• a cast
• a mold
• a trace fossil
• a petrified fossil

Which of the following substances is not able to preserve entire organisms?

• sticky tar
• water
• amber 
• ice

What type of fossils provide evidence of the activities of ancient organisms?

• molds and casts
• petrified fossils
• trace fossils
• carbon films

Most fossils form when living things die and are buried by ___________ that hardens into rock over time.

• dirt
• materials
• erosion
• sediment

The __________ tells the history of life, past environments on Earth, and how different organisms have changed over time.

• fossil record
• law of superposition
• absolute age
• relative dating

The number of years since the rock has formed?

• relative age
• your grandmas age
• absolute age
• law of superposition

The was to determine the relative age of rocks

• law of superposition
• relative dating
• relative age
• absolute age

A hardened layer of magma beneath the Earth's surface

• fault
• unconformity
• extrusion
• intrusion

Fossils used to help geologists match rock layers

• trace fossils
• index fossils
• carbon film
• petrified fossils

The age of a rock compared to with the age of other rocks

• law of superposition
• relative age
• absolute age
• unconformity