How Old is the Grand Canyon? Quick Check

Question

1. Which concept of relative dating refers to the process of matching similar fossils from different locations?

correlation

law of inclusion

law of crosscutting

uniformitarianism

2. Which describes the difference between the law of inclusion and the law of crosscutting in relative dating of rocks and fossils?(1 point)

Intruding objects are younger in the law of inclusion.

Bottom layers of rock are older only in the law of crosscutting.

Bottom layers of rock are younger only in the law of crosscutting.

Intruding objects are older in the law of inclusion.

3. Use this sentence: A scientist finds fossils of the same marine animal in two distant locations.

Which conclusion statement is correct?

(1 point)

Both areas were covered by seawater at some time.

Water in both areas dried out at the same time.

The fossils closest to Earth’s surface are the oldest.

All rocks in both areas are the same age.

4. Which organism is most likely to leave a fossil record?(1 point)

mushrooms

bacteria

jellyfish

turtles

5. Which statement best describes why most individual organisms never fossilized?(1 point)

Conditions for fossilization are rare.

Chemicals that fossilize organisms are rare.

Only organisms that lived in the ocean fossilize.

Only organisms with hard parts fossilize.