MGH 5.1-5.2 Measuring Earth's Age Quiz

What is the principle of superposition in geology?

• The oldest rocks are at the top, and the youngest are at the bottom.

• The oldest rocks are at the bottom, and the youngest are at the top.

• Rocks are deposited in vertical layers.

• Rocks are deposited in random order.

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Which method is used to determine the absolute age of rocks?

• Superposition

• Radioactive dating

• Original horizontality

• Lateral continuity

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In the principle of original horizontality, how are most rock layers initially deposited?

• Vertically

• Horizontally

• Diagonally

• In a circular pattern

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What does the principle of lateral continuity suggest about rock layers?

• They are deposited in small, isolated patches.

• They are deposited in large, continuous sheets.

• They are deposited in vertical columns.

• They are deposited in random clusters.

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If a rock contains pieces of another rock, what can be inferred about the age of the rock containing the pieces?

• It is older than the pieces.

• It is younger than the pieces.

• It is the same age as the pieces.

• It is unrelated in age to the pieces.

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How does the principle of cross-cutting relationships help in determining the relative age of rocks?

• It shows that the feature that cuts is older.

• It shows that the feature that is cut is older.

• It shows that both features are the same age.

• It shows that the features are unrelated in age.

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Which of the following is a method for measuring the age of Earth?

• Superposition

• Radioactive dating

• Lateral continuity

• Original horizontality

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Why is the law of superposition important in geology?

• It helps determine the absolute age of rocks.

• It helps determine the relative age of rock layers.

• It helps identify the mineral composition of rocks.

• It helps in the chemical analysis of rocks.

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What can be inferred if a rock layer is tilted or folded?

• It was originally deposited in a tilted position.

• It was originally deposited horizontally and later disturbed.

• It was originally deposited in a folded position.

• It was originally deposited vertically.

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How does radioactive dating differ from the principle of superposition?

• Radioactive dating determines relative age, while superposition determines absolute age.

• Radioactive dating determines absolute age, while superposition determines relative age.

• Both determine absolute age.

• Both determine relative age.

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