A Cross Section of Earth Reveals a Layered Structure That

question 19

Multiple Choice

A cross section of Earth reveals a layered structure that has different thicknesses and densities. How do geologists know this?

• A) From drilling and digging down into the various layers.
• B) From observing the characteristics of lava and gas issuing from volcanic vents.
• C) From observing the transit times through the Earth of waves generated by large earthquakes.
• D) From comparisons with drill cores taken by robot spacecraft on Mars and Venus.

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Definitions:

Information Recall

The ability to retrieve and reproduce information from memory that was previously learned or experienced.

Analogical Inconsistency

Discrepancies or lack of uniformity in reasoning or outcomes when comparing two similar situations or analogies.

Mental Set

A tendency to approach situations in a certain way because that method worked in the past, potentially hindering the solution of new problems.

Functional Fixedness

A cognitive bias that limits a person to using an object only in the way it is traditionally used, hindering problem-solving.