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Earthquakes occur frequently. They create different types of waves that travel through the earth at a variety of speeds. Certain waves are also reflected and refracted by some materials. As a result it is possible to tell where boundaries are between two different types of materials. By knowing the speed the various waves travel through the various materials, it is also possible to know the density of various materials.
Geologists know the material ejected by volcanoes of various types.
The density in the center of the earth is the same as a mixture of iron and nickel.
Just above the center of the earth is heavy material, but is a guess!
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoGeologists have used two main types of evidence to learn about Earth's interior: direct evidence from rock samples and indirect evidence from seismic waves.
Anonymous
Wiki User
∙ 12y agothis is a dumb question because u can just go on Google and search for it and click on some science website ok
Wiki User
∙ 10y agothey use the scientific machines and let these enter near the earth and see about the earth's interior! i think...!
Wiki User
∙ 8y agoScientists can determine the materials made of the earths interior by giving off the three types of waves, which are p-waves, s-waves, and finally surface waves.
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What are five careers that require a knowledge of science?
You don't have to be a genius to know this but a: Psychologist, Quantum Physicist, Geologist, Astro Physicist, And Mycologists need require some knowledge of science.
What happens to earths materials when they are exposed to sunlight?
I really really really really really really really do not know
What kind of matter that makes up earth interior help scientists make inferences?
scientists know the mass and the volume of earth how could this information help them make inferences about thr kind of matter that makes up the earth interior
How does the general public feel about hydroelectric power?
he general public would not feel comfortable using hydroelectic power because, why should they waste all this money to make the machines for it? I would want that cause shouldn't the public reserve the earths energy? he Earths energy wont be lasting forever you know.
Why do scientist study earth?
Scientist study earth because earth is the place that we envolved on and is the only planet in our solar system that is know to support life and is the fifth- largest planet in our universe.
What is plate tectonics nature of earths interior?
id ont know
How do scientists know about the structure of the earth's interior?
Because of the study of seismic waves from earthquakes
How do geologist know that earths core is made up of two parts?
Seismology - echo patterns of sound waves traveling through the earth.
How do geologist know he or she is looking at a disconformity?
How does a geologist know when he or she is looking at a disconformity
What clues tell geologist how extrusions form?
I am learning about this in my Science class, and when a geologist looks at an extrusion, they know it's an extrusion because it is Igneous rock, and an extrusion helps tell the reletive ages of the layers around it.
How do geologist know that rock layers are undisturbed?
the way geologist know that rock layers are undisturbed is the rock layers are folded
What tells geologists how extrusion forms?
I am learning about this in my Science class, and when a geologist looks at an extrusion, they know it's an extrusion because it is Igneous rock, and an extrusion helps tell the reletive ages of the layers around it.
What clues tells geologists how extrusions are formed?
I am learning about this in my Science class, and when a geologist looks at an extrusion, they know it's an extrusion because it is Igneous rock, and an extrusion helps tell the reletive ages of the layers around it.
How do you know if your gemstones are genuine?
Your local jeweler would know, show them to him. Also if you know a geologist, he would know also.
What do you call someone who studies geometry?
A Geologist needs to know a lot about geometry.
What do calls someone who studies geometry?
A Geologist needs to know a lot about geometry.
What can you do after B.a geography for make geologist?
what can i do know about animal rights and Abuse deegry
