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Most of what we 'know' about earth's interior is theoretical. We do not have any way to gather physical evidence beyond a few miles in depth. Some of what we know comes from observing material that comes from deep within the earth, such as volcanic material and extremely old rock formations.
We also know quite accurately the mass of the earth and its volume, and can divide to get the density. From that density we can make a model of the most likely interior composition. We can also observe the earth's magnetic field to gather information to form theories about the core.
When atomic bombs were detonated below the surface (mainly in the 1950s) the artificial earthquakes they created produced compression waves that bounced off of interior structures up to about 1000 miles inside the earth. This gave scientists a tremendous opportunity to learn about the layers of the earth.
There are still some hot debates (pun intentional) regarding the temperature of the inner core. One study said confidently that the core was 3677 C. Wikipedia quotes the estimate 5700 C. Writer Byrdand Black says 5000 C to 7000 C. Others give different estimates. Al Gore goofed and said that the core of the earth was several million degrees (he probably meant several thousand, or was referring to the sun).
What else can I help you with?
What two types of rock provide evidence of the composition of earths interior?
What two types of rock provided evidence of the composition of Earth'sinterior
What changes occur in the composition of the earths interior layers as you move toward the core?
the material is hotter & denser
What changes occur in the composition of the earths interior layer as you move towards the core?
the material is hotter & denser
What is plate tectonics nature of earths interior?
id ont know
Is earths interior hot or cold?
The earths interior is cold
How do scientists know about the structure of the earth's interior?
Because of the study of seismic waves from earthquakes
Why do you think scientists study earths interior?
Scientists study Earth's interior to better understand the planet's composition, structure, and dynamics. This helps in predicting natural disasters like earthquakes and volcanic eruptions, as well as in understanding processes like plate tectonics and magnetic field generation. Studying the Earth's interior also provides insights into the planet's history and evolution.
What type of scientist studies the earths insides?
Geologists study the Earth's interior. They also study the Earth's composition and all the processes that cause it to change.
What do geoligists use to map the earths interior?
Geologists use seismic waves to map the Earth's interior. By studying how these waves travel through the Earth, geologists can infer information about the composition and structure of different layers beneath the surface. This helps them understand the different layers of the Earth, such as the crust, mantle, and core.
What is the seismic wave that travel's through the earths interior?
A body wave is a seismic wave that travels through Earths interior.
Why is earths composition of earths atmosphere important?
The Chemical Composition of the Earth's atmosphere is important because it holds the Earth together.
How do you know the Earths structure if man has never been to the core?
Scientists use seismic waves from earthquakes to study the Earth's interior. By analyzing how these waves travel through the layers of the Earth, they can determine the composition and structure of the planet without physically reaching the core.
