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How does the composition of earths interior effect an earthquake?
The composition of Earth's interior affects earthquakes by influencing the propagation of seismic waves. The different layers, such as the crust, mantle, and core, have varying densities and properties that impact how seismic waves travel through them. This influences the speed, direction, and intensity of seismic waves during an earthquake.
Why do seismic waves speed up beneath the surface of continents?
Because earths crust is denser than the mantle
Do seismic waves speed up or slow down as they travel downward and reach the Moho?
Seismic waves generally speed up as they travel downward and reach the Moho, the boundary between the Earth's crust and mantle. This increase in speed is due to the change in density and composition of the Earth's layers, causing the waves to travel faster in the more rigid mantle layer compared to the crust.
Where is the place within the earth where the speed of seismic waves increases sharply?
The place within the Earth where the speed of seismic waves increases sharply is known as the Moho discontinuity, or Mohorovicic discontinuity. This boundary separates the Earth's crust from the underlying mantle, and seismic waves are thought to speed up due to the change in composition and density between these two layers.
What happens when seismic waves move from the Earth's crust to the mantle?
When seismic waves move from the Earth's crust to the mantle, they experience a change in speed and direction due to the difference in properties of the two layers. The mantle is denser and more rigid than the crust, causing seismic waves to refract and reflect as they propagate through it. This helps scientists understand the composition and structure of Earth's interior.
What are the waves that move through the Earth's crust called?
Seismic waves.
Why do seismic waves change speed?
"True, the Seismic Waves change speed and direction when they encounter different materials."
What does seismic mean?
(not seismic, seismic wave)Seismic waves are waves of energy that travel through the earth.
What occurs when they are seismic waves travelling on Earth's crust?
Earthquakes
How did mohorovicic discover interior layers of Earth?
He noticed that seismic waves changed velocity at measurable depths. The boundary where seismic waves increased in speed is the boundary between the crust and the mantle, where seismic waves start to travel through more dense rock.
What characteristic of seismic waves tell you this?
Seismic waves are the waves that rapidly move through the earth's crust causing a shift in techtonic plates. These waves tell us how strong an earthquake was.
The propagation of seismic waves through the Earth's interior provides evidence of internal layering the first boundary discovered was the boundary between the?
crust and mantle, known as the Mohorovičić discontinuity or Moho. This boundary is where seismic waves change speed, indicating a transition between the Earth's outermost solid layer (crust) and the underlying denser layer (mantle).
