15
RCMultiple Choice

Unit Test — Cumulative exam

Question 15 • VA-Earth Science CR

The theory of plate tectonics states that the outer layer of Earth is divided into large, rigid blocks called plates. What could happen that may lead to a change in this theory?

Answer
A
Scientists discover new information about Earth's layers.
B
Scientists begin observing Earth's outer layer.
C
Scientists update their opinion of the theory.
D
Scientists revise the definition of theory so that it fits with what they believe.

Explanation

Scientific theories may change when new evidence is discovered. If scientists learn new information about Earth’s layers, they may need to revise or expand the plate tectonics theory to account for it. Simply beginning observations or changing an opinion without new evidence would not be enough.

AI-written and checked against the verified answer.

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