Ch. 12 Less 1-3 Quiz

What is a hollow area found in sediment in the shape of an organism or part of an organism called?

• a cast

• a mold

• a trace fossil

• a petrified fossil

Which of these represents a solid copy of the shape of an organism?

• a mold

• a carbon film

• a cast

• a fossil record

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

• molds & casts

• petrified fossils

• trace fossils

• carbon films

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

• sticky tar

• water

• amber

• ice

Why do scientists value the information collected from studying fossils?

• It can show the habitat where the organism is currently living.

• It can indicate how many there were and how often the organism reproduced.

• It can provide accurate details of what external features the organism had.

• It can provide evidence as to how the organism has evolved over time.

Which term refers to the number of years that have passed since the rock has formed?

• relative age

• law of superposition

• absolute age

• index fossil

What is the age of a rock compared to the ages of other rocks called?

• absolute age

• geologic age

• sedimentary age

• relative age

What refers to the formation of igneous rock on Earth's surface is known?

• a gap

• an intrusion

• a fault

• an extrusion

What is a fault?

• the formation of sedimentary rock

• a break in the Earth's crust

• a mistake in the analysis of geologic data

• the formation of fossils

Which statement supports the law of superposition?

• The surface layers of a rock formation are younger than the bottom layers.

• All rocks are the same age no matter where they are.

• Rocks are older at the top of a formation than at the bottom.

• Since rock layers always move it is difficult to determine their ages.