Earthquakes are made up of 4 different seismic waves, P, S, L and R. L and R are surface waves, and have virtually nothing to do with the interior. However, P and S are body waves and do.
P waves are compressional waves, that is they push and pull against rock in the same direction as the waves move. They are the fastest. S waves vibrate material up and down. Both travel faster in more dense material, and P waves travel slower in liquid while S waves are unable to move through liquid at all.
As the Earth's outer core is liquid, and inner core is very dense, this affects the waves as they travel through the Earth. It speeds them up and slows them down according to the density. Because S can't go through the outer core, there is a "shadow zone" at a certain area on the Earth where there are no S waves at all. P waves also have a smaller shadow zone, where the waves are diflected and bent within the outer core.
Scientists have studied seismic waves produced by earthquakes to learn about Earth's interior. These waves travel through the Earth at different speeds and can reveal information about the composition and structure of the planet's layers. By analyzing how seismic waves behave as they move through the Earth, scientists have been able to create models of the Earth's interior.
The shadow zone is an area on Earth's surface where no seismic waves are detected after an earthquake. This helps scientists understand the Earth's interior structure, as the absence of seismic waves in this zone indicates the presence of a liquid outer core that blocks the transmission of certain seismic waves.
body waves
False. Geologists do not rely on evidence from fossils to study Earth's interior. Instead, they use seismic waves, drilling samples, and other direct methods to gather information about the Earth's interior, such as its composition and structure. Fossils are used by paleontologists to study ancient life forms and environments, not the Earth's interior.
The image likely shows the layered model of Earth's interior, consisting of the crust, mantle, outer core, and inner core. This model is based on seismic data and helps in understanding the composition and structure of our planet.
deflect
Because of the study of seismic waves from earthquakes
A body wave is a seismic wave that travels through Earths interior.
A body wave is a seismic wave that travels through Earths interior.
Seismic waves
body waves
body waves
Seismic data
Scientists have studied seismic waves produced by earthquakes to learn about Earth's interior. These waves travel through the Earth at different speeds and can reveal information about the composition and structure of the planet's layers. By analyzing how seismic waves behave as they move through the Earth, scientists have been able to create models of the Earth's interior.
From seismic interpretations of earthquake date. From computer modeling. From the study of meteorites, From geochemistry and form the study of mantle xenoliths.
scientists use seismic waves to map earths interior by seismographs that measure the times at witch seismic waves arrive at different distances from an earth quake.
The shadow zone is an area on Earth's surface where no seismic waves are detected after an earthquake. This helps scientists understand the Earth's interior structure, as the absence of seismic waves in this zone indicates the presence of a liquid outer core that blocks the transmission of certain seismic waves.