Using data from seismic waves, geologists have learned that earth’s interior is made up of several a. continents. b. layers. c. ridges. d. trenches. select the best answer from the choices provided

The correct answer is B. Layers

Explanation:

Seismic waves are energy waves able to travel through the Earth and that result from eruptions, earthquakes and other movement phenomena. The study of these waves allowed geologists who are the scientist that study the Earth to know how deep energy waves can go and how energy behaves in different levels of depth. As geologist noticed energy waves changed their speed and other features depending on the depth in Earth they were and that certain patterns repeated they could determine the Earth was composed by different levels or strata each with different features. These strata are commonly known as layers as these are levels that compose the Earth and are consistent all around it being mainly uniform; these layers include the cruts, the mantle, the outer and inner core among others. Thus, by using data from seismic waves the geologists have learned that the Earth's interior is made up of several layers. This is the correct answer as layers this the most accurate word to describe the levels or strata (plural of the word stratum) that composed Earth.

according to hess's theory, when the magma cooled, it would expand and push the tectonic plates apart. it would push the north and south america plates to the west and eurasia and africa ones to the east. the atlantic ocean would get wider but the coastlines of the masses would stay the same.

harry hammond hess was a geologist and a united states navy officer in the second world war. he is considered to be one of the founding fathers of the theory of plate tectonics. he is known for his theories on sea floor spreading, stating that the movement of the continents was the result of see floor spreading. the continents are attached to the plates and do not move separately. the plates themselves shift and change shape, carrying the continents along.

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