fossils, relative and absolute age dating

Front

The image shown could best be used for which purpose? Relative Dating, Absolute Dating, Radiometric Dating, Paleomagnetic Dating

Back

Relative Dating

Front

What event occurred after layer C was deposited and before layer B was deposited?

Back

Igneous activity caused new rock to form

Front

How many instances of mass extinctions do scientists believe are shown in the fossil record?

Back

Dozens

Front

What is the process called where slight differences in traits make some individuals in a species better able to survive than others, leading to more of their offspring surviving?

Back

Natural Selection

Front

A science class is exploring a rocky hillside for fossils. They find some fossils from ancient seashells. The species of animal that created the fossils is now extinct. What conclusion can be drawn from this fact?

Back

The species was unable to adapt to environmental changes.

Front

Scientists are studying layers of rock and the fossils contained within them. They notice that the oldest fossils (found in layers B-D) are all aquatic organisms. Then there is a layer of volcanic ash (Layer E), followed by new land dwelling fossilized organisms. Which hypothesis supports the fossil evidence about the extinction of the older aquatic organisms?

Back

The aquatic organisms went extinct because a volcanic eruption caused the environment to change.

Front

Which part of an organism is least likely to form into a fossil?
Options: Bones, Horns, Teeth , Skin

Back

Skin

Front

Using the cross section, explain how the geologist knows the relative age of the intrusion compared with that of the gravel.

Back

The intrusion is older relative to the gravel.

Front

Charles Darwin came up with this theory.

Back

Natural Selection

Front

What did Charles Darwin think about natural selection?

Back

organisms with better traits for their environment will survive and reproduce