Three centuries ago, the English scientist Isaac Newton calculated, from his studies of planets and the force of gravity, that the average density of the Earth is twice that of surface rocks and therefore that the Earth's interior must be composed of much denser material. Our knowledge of what's inside the Earth has improved immensely since Newton's time, but his estimate of the density remains essentially unchanged. Our current information comes from studies of the paths and characteristics of earthquake waves travelling through the Earth, as well as from laboratory experiments on surface minerals and rocks at high pressure and temperature. Other important data on the Earth's interior come from geological observation of surface rocks and studies of the Earth's motions in the Solar System, its gravity and magnetic fields, and the flow of heat from inside the Earth.
The planet Earth is made up of three main shells: the very thin, brittle crust, the mantle, and the core; the mantle and core are each divided into two parts. All parts are drawn to scale on the cover of this publication, and a table at the end lists the thicknesses of the parts. Although the core and mantle are about equal in thickness, the core actually forms only 15 percent of the Earth's volume, whereas the mantle occupies 84 percent. The crust makes up the remaining 1 percent. Our knowledge of the layering and chemical composition of the Earth is steadily being improved by earth scientists doing laboratory experiments on rocks at high pressure and analyzing earthquake records on computers.
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BhoZsx MhiNe PhowZx_14_
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To know more about earths, origin, formation and history.
because what happens in the earth interior affects the exterior,so can help perhaps predict earthquakes and volcanic eruptions and evacuate populated ares
Because you study earth and science and astronomy is study of stars and planets. So I think astronomers are a scientist of earth dont you!:)
why do you think scientists study earths interior?if you were a scientists ,will you undertake a study of the earths interior?
P waves and S waves
sociologist i think!
the inside of something i think
big bang
All scientist study science so every one you could think of :)
they put monkeys on earth
i dont know about the answer
They do not think plant life 'came' to Earth. They believe it evolved here.
Biologists study life; they can be considered to be of two kinds: zoologists study animals, and botanists study plants.