Law of Superposition Review Quiz

What is the law of superposition?

• Rocks are arranged randomly with no specific order

• The age of rocks has no relation to their position in a rock formation

• Oldest rocks are at the bottom and youngest rocks are at the top

• Youngest rocks are at the bottom and oldest rocks are at the top

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Explain the principle of original horizontality.

• Layers of sediment are originally deposited horizontally under the action of gravity.

• The principle of original horizontality states that layers of sediment are originally deposited at a 45-degree angle.

• The principle of original horizontality does not apply to sedimentary rocks.

• Layers of sediment are originally deposited vertically due to tectonic forces.

Describe the principle of lateral continuity.

• Layers of sediment initially extend upwards only.

• Layers of sediment initially extend vertically in all directions.

• Layers of sediment initially extend laterally in all directions.

• Layers of sediment initially extend diagonally in all directions.

How does the principle of cross-cutting relationships help in relative dating?

• It has no relevance in determining the sequence of events in geological formations.

• It only applies to sedimentary rocks and not other types of rocks.

• It helps in determining the sequence of events and the relative ages of rock layers and geological features.

• It helps in determining the absolute ages of rock layers and geological features.

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What is the difference between relative dating and absolute dating?

• Relative dating provides an exact age in years for an object.

• Absolute dating compares the age of one object to the age of the universe.

• Relative dating compares the age of one object to the age of the Earth.

• Relative dating compares the age of one object to another, while absolute dating provides a specific age in years.

How can the age of rock layers be determined using the law of superposition?

• By observing the relative position of rock layers, with the youngest layer on top and the oldest layer on the bottom.

• By counting the number of fossils in each rock layer

• By analyzing the color of the rock layers

• By measuring the thickness of each rock layer

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Explain how fossils can be used to determine the relative age of rock layers.

• By measuring the amount of radioactive decay in the rock layers.

• By analyzing the color and texture of the rock layers.

• By studying the weathering patterns on the surface of the rock layers.

• By comparing the types of fossils found in different layers and applying the principle of faunal succession.

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In what real-life scenario can the law of superposition be applied?

• Geology

• Dentistry

• Astronomy

• Cooking

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How does the law of superposition help in understanding the geological history of an area?

• It has no impact on understanding the geological history of an area.

• It helps in understanding the geological history by determining the absolute ages of rock layers.

• It only applies to sedimentary rocks, not other types of rocks.

• It helps in understanding the geological history by allowing geologists to determine the relative ages of rock layers and the events that occurred in the area.

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NGSS.MS-ESS1-4

What is the youngest layer?

• Layer C

• Layer A

• Intrusion D

• Fault E

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