Author Question: Choose the option that puts the following steps in the correct sequence. 1. An electric sensor ... (Read 94 times)

maegan_martin · **on:** Jul 16, 2018

Choose the option that puts the following steps in the correct sequence.

1. An electric sensor records the signal's travel time. 2. A transducer changes the signal into a thump on the rock. 3. An electrical signal is delivered. 4. The wave travels through the rock.
A) 4, 2, 3, 1
B) 3, 4, 1, 2
C) 3, 2, 4, 1
D) 4, 1, 2, 3

Question 2

Which property of waves has been most important in allowing seismologists to identify the boundaries of the inner core/outer core and the outer core/mantle?

A) wave reflection
B) wave amplitude
C) wave velocity
D) wave refraction