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- 1. Multiple Choice
In a section of the Grand Canyon, scientists have found the fossil remains of several dfferent groups of organisms. The diagram represents the number and age of the fossils the scientists found. The width of each shaded area in the diagram below indicates the relative number of fossils found.
Which of the following statements is supported by the fossil record?
Group C is now extinct.
Group D has been in existence the longest.
Group A is the most recent organism to come into existence.
Group B was the most numerous organism 10 million years ago.
- 2. Multiple Choice
The diagram shows the fossil record of different species.
When did a major extinction event most likely occur?
at the end of the Cenozoic
at the end of the Permian
at the beginning of the Silurian
at the beginning of the Cambrian
- 3. Multiple Choice
Use the diagram to answer the following question.
In which stage of the rock cycle shown above would you predict the formation of fossils?
Stage L
Stage M
Stage N
Stage P
- 4. Multiple Choice
The diagram represents a cross-section of a cliff. It shows several rock layers containing fossils.
Which of the following layers of rock is most likely the youngest?
the layer containing trilobites
the layer containing fishes
the layer containing amphibians
the layer containing dinosaurs
- 5. Multiple Choice
The drawings show some trilobite and crinoid fossils.
Which of the following is the most reasonable conclusion when fossils of these two dfferent types of organisms are found in the same layers of rock?
Crinoids were prey for trilobites.
Crinoids were ancestors of trilobites.
Crinoids and trilobites had similar behaviors.
Crinoids and trilobites lived at the same time.
- 6. Multiple Choice
The diagram shows a geologic cross section.
Which rock layer most likely contains fossils of the most recently evolved organisms?
1
2
3
4
- 7. Multiple Choice
Use the diagram to answer the following question.
In the diagram shown above, which rock layer is probably the oldest?
Layer 1
Layer 2
Layer 5
Layer 6
- 8. Multiple Choice
Use the diagram to answer the question below.
Which rock layer indicates a dry, hot climate at one time in geologic history?
Layer A
Layer B
Layer C
Layer D
- 9. Multiple Choice
The picture shows four different rock layers in a hillside.
What is the best evidence that one of these layers of rock was formed under an ocean?
the thickness of the layer
the type of fossils in the layer
the number of caves in the layer
the height above sea level of the layer
- 10. Multiple Choice
The diagram shows a cross section of a valley.
Which conclusion correctly describes the youngest rock layer in the diagram?
Layer W is the youngest because it is the top layer of sedimentary rock and the only layer that contains fossils.
Layer X is the youngest because it is the middle layer of sedimentary rock.
Layer Y is the youngest because it is the bottom layer of sedimentary rock.
Layer Z is the youngest because it was once molten rock that moved through all three layers of sedimentary rock.
- 11. Multiple Choice
The diagram shows two rock sections from different parts of the world.
The granite layer in Section W is 480 million years old (480m.y.). How can the relative age of the fossils in Section X be determined?
by using the potassium-40 dating method on parts of the fossils
by measuring the thickness of the fossil layer in each section, because fossils in a thick layer are older than fossils in a thin layer
by measuring the height of the fossil layer in each section, because fossils at a high elevation are younger than fossils at a low elevation
by comparing the location of the fossils in Section W to the location of the fossils in Section X
- 12. Multiple Choice
The diagram shows a cross-section of Earth.
What is most likely happening to rock at location X?
Rock is being dissolved.
Rock is being compressed.
Rock is being deposited as sediment.
Rock is being weathered and transported.
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