Explain the interior of the earth. How do earthquakes help us understand theinterior of the earth ? Upsc
Answers
Earth Is Made of Many Layers
Have you ever thought about digging a hole to China? It seems like a logical way to get there instead of flying all the way around the globe. While this sounds like a great idea, it would take you much longer to dig through the earth than to travel around it. Even if you could dig down that far, you would have a difficult time getting through all of the stuff that lies underneath the surface of the planet.
So, if we can't dig that far, how do we know what makes up the interior of the earth? Scientists are able to understand Earth's interior by studying seismic waves. These are waves of energy that travel through Earth, and they move similarly to other types of waves, like sound waves, light waves, and water waves. Seismic waves are sent through the earth during earthquakes, and those energy waves are what cause the ground to shake as they travel through it.
Seismic waves are recorded by a machine called a seismograph, which tells us about the strength and speed of the seismic waves. These recordings made by a seismograph are called seismograms. Seismic waves travel at different speeds when they pass through different types of material, so by studying seismograms, scientists can learn a lot about Earth's internal structure.