Question

multiple - choice question
seismic waves give us ideas about:
the internal structure of oceanic waves.
the internal structure of the earth.
the internal structure of the moon.

Explanation:

Seismic waves travel through the Earth's layers and their behavior (such as speed and direction changes) help scientists understand the Earth's internal structure. They are not used to study oceanic waves or the moon's internal structure in the context of this question.

Answer:

B. the internal structure of the earth.