Much of What We Know About the Internal Structure and Composition

question 47

Multiple Choice

Much of what we know about the internal structure and composition of Earth has come from the study of ____. ​

• A)satellite imagery
• B)seismic waves
• C)volcanic eruptions
• D)Mars
• E)deep-ocean sediments

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Definitions:

Frequency

The rate at which something occurs over a particular period of time or in a given sample.

Sound Waves

Sounds that move through air or a different medium and become audible when they arrive at the ear of a human or animal.

Night Vision Improvement

The enhancement of the ability to see in low light conditions, which can be achieved through various means including training or specialized equipment.

Dim Light

A low level of illumination, often creating a subdued or intimate atmosphere, but may be insufficient for activities requiring detailed vision.