1, Comparing the composition of the crust to other bodies in the solar system
2. By studying things from Earths layers that have been pushed up through the cracks of the crust.
3.By measuring diffrent kinds of vibration from earthquakes
3.By doing laboratory expirements
I HOPE THIS HELPS YOUU!!!!!
The seismic waves are the method that is used by scientists to study the composition of layers of Earth.
A scientist is a professional who researches a concept, collects the needed information, and then makes a conclusion from it.
Seismic waves are created out of happening of earthquakes or even explosions from nuclear weapons. When these waves are passed the layers of the earth's surface, they may even speed up, bend down, or even gets decreased depending upon their speed,
Therefore, scientists used seismic waves to know about the composition of the surface of Earth.
Learn more about the seismic waves in the related link:
https://brainly.com/question/13056218
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