Rock Layers And Geologic Time Question Preview (ID: 36181)


Review For Earth Science Test. TEACHERS: click here for quick copy question ID numbers.

Which of the following allows us to assume that, in undisturbed rock, the oldest layer is on the bottom?
a) The Law of Superposition
b) The Law of Original Horizontality
c) Principle of Cross-Cutting Relationships
d) All of the above

What does the principle of cross-cutting relationships tell us?
a) Rock layers will cross each other after an earthquake
b) Volcanoes are examples of cross-cutting relationships
c) If an intrusion exists within a rock layer, the intrusion must be older
d) If an intrusion exists within a rock later, the rock layer must be older

What are fossils of species that lived for a short period of time over a wide area?
a) Imprint
b) Cast
c) Index
d) Mold

T/F: Imprint fossils allow geologists to approximate the age of the rock layers in which they were found.
a) True
b) False
c)
d)

If the same fossils were found in different rock layers of different areas, geologists can assume that
a) The rock layers are approximately the same age
b) The rock layers were created more than 50 million years apart
c) The fossils were moved from one layer to another by other animals
d) There is nothing we can conclude about finding the same fossils

What is Earth's approximate age?
a) 400.5 million years
b) 4000.6 million years
c) 400.5 billion years
d) 4.6 billion years

We know Earth is approximately 4.6 billion years old, even though no rocks have been dated older than 4 billion years, because _________
a) Earth's crust is difficult to date
b) Earth's crust was blasted away during the formation of Earth
c) Earth's crust is subject to extensive erosion
d) Earth's crust is being destroyed by solar radiation

Which of the following causes erosion?
a) Running water
b) Animal behavior patterns
c) Wind
d) All of the above

T/F- Crevices in a mountain can become larger as water freezes and expands, then melts again.
a) True
b) False
c)
d)

Removing plants in an area with running water will cause which of the following?
a) Sedimentation of the lake will increase
b) Erosion of the area will decrease
c) Sedimentation of the hillside will decrease
d) Erosion of the area will increase

A sample of four rock layers is being examined. Layers 1-4 are tilted, and an intrusion cuts through layers 1-4. Which of the following must be true?
a) The layers were tilted after the intrusion
b) The 4th layer was tilted after the intrusion
c) The intrusion formed after the layers were tilted
d) The 4th layer was formed after the intrusion

Which of the following is the correct term for giving the age of rock layers and fossils with specific years?
a) Relative dating
b) Absolute Dating
c) Numerical Dating
d) Sequential Dating

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