Weekly Quiz 4/29

Record of Earth’s history from its origin 4.6 bya to the present

• era

• periods

• index fossil

• geological time scale

a rock or sediment layer with distinctive characteristics that make it easily identifiable in correlation

• fossil

• index fossils

• geology

• key bed

method used by geologists to fill in the missing gaps in an area's rock record by matching rocks and fossils from separate locations (this work also has a non-science definition that is similar)

• causation

• inclusions

• correlation

• lateral continuity

Which of the follow is INCORRECT about an index fossil?

• The fossil must have lived only during a short part of the Earth's history.

• Many fossils of the organism must be found in the rock layers.

• The fossil must be found over a wide area of the Earth and be unique.

• The fossil must only be found in one area.

What can the fossil record tell us?

• history of life on Earth

• groups of organisms changed over long periods of time

• Information about the past climate of our Earth

• information about the past environments and changes of the Earth's surface

• all of these are correct

Index fossils CAN tell us the age of a rock layer.

• True
• False

Which layer is the oldest?

• A
• B
• C
• D

Which is younger: A or D?

• A
• D
• Both are the same

Why is D younger than B?

• D had to be there for B to intrude
• D and B happened at the same time
• B was laid on top of D
• B had to be there for D to intrude

What is the law that states why F is younger than G?

• law of uniformitarianism
• law of superposition
• law of cross-cutting
• law of Memorial Jags