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A seismograph is used to sense seismic waves in the earth. The seismic waves are sent down by scientist and how fast and how straight the line is when the seismograph reads them is how they tell which mineral or if its a liquid or solid.
Which is how they know about the inner and outter core, and the mantel.
Wiki User
∙ 13y ago
Wiki User
∙ 11y agoBack in the early 1900s, two seismologists, Sir Harold Jeffreys and Keith Edward Bullen, made a series of travel-time curves that show how long it takes for different seismic waves to travel certain distances in through the earth. These curves show a general velocity through the earth. Seismic waves from an earthquake go through the earth in a push-pull, or sine wave motion (vertically and horizontally). These seismic waves reflect off of, refract off of, or speed up through different layers in the earth that have large changes in density. These velocities are used to determine approximate thicknesses of layers within the Earth, as distance (or thickness) = velocity*time.
Wiki User
∙ 9y agoOnly one segment of inner earth is theorized to be liquid. This segment is known as the outer core. Scientists suspect that the outer core is liquid because of its interaction with seismic waves. A type of seismic wave known as an "S" wave or Shear wave moves side-to-side in a shearing motion and does not propagate through liquid only through solid.
Wiki User
∙ 13y agoReflection and refraction seismology.
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What defines the three main parts of the solid earth?
IDK find it out yourself you cheater I'm kidding it is the crust,inner core,and the lithosphere
What has a seismology taught us about the earth interior?
Through Seismology, or through studying earthquakes, we have been able to find that the Earth's interior is composed of three layers: Crust, Mantle and Core. The core is further divided into outer core and inner core.
How many layers is the world divided into?
atmosphere/hydrospherelithosphereasthenospheremantleouter coreinner core(you could divide these further, but the above are the main 6 layers)
What layer of earth is hot rock?
The mantle is the hot rock.
Where can you find mud rock?
You cn find Mudrock in caves, and on beaches. It is most commonly found on the inner core of our perpendicular earth. If Mudrock reaches 5000 degrees it becomes igneous formations into crystals
The core is how far beneath Earth's surface?
To be precise, there is actually an outer core and an inner core. You can find the details in the Wikipedia article "Structure of the Earth".
What 2 substances would you find in the inner core?
Earth's core is made primarily of iron and nickel.
How do scientist find out stuff about the inner core of the earth?
They measure how waves from earthquakes travel through the earth, and they test how waves travel through liquid and solid and goo, and they compare the results to find the consistency of the inner core and other layers of the earth.
How do you know what earth interior is like below the deepest drilled holes?
The answer is we know what it is because if you Google it up you will find it says the heatness of the earth's inner core is why.
How do scientists find out information on the core?
Scientists find out information on the core by using special tools to dig out samples from deep inside the earth. Special instruments "look inside" parts of the earth we cannot see.
Where would you find the most dense layer of the earth?
The center of the planet. The Inner Core.
Where can iron and nickel be found most in earth's interior?
You can find the most Iron and nickel in the earth's inner and outer core.
What defines the three main parts of the solid earth?
IDK find it out yourself you cheater I'm kidding it is the crust,inner core,and the lithosphere
What has a seismology taught us about the earth interior?
Through Seismology, or through studying earthquakes, we have been able to find that the Earth's interior is composed of three layers: Crust, Mantle and Core. The core is further divided into outer core and inner core.
How far beneath the surface is the Earths core?
It's approximately (3,963)miles down to the earths core.
How many layers is the world divided into?
atmosphere/hydrospherelithosphereasthenospheremantleouter coreinner core(you could divide these further, but the above are the main 6 layers)
What layer of earth is hot rock?
The mantle is the hot rock.
