Question

why is the composition of the crustal layer of the earth of great interest....​

Answer 1

Hey mate,.

The earth crust is a thin layer which is used to surround the world and which composed of soil and dust particles.

It is part of the earth which makes up one percent of the planet volume of total.

The earth of planet is made up of the three shells such the thin, mantle, and crust.

Hope it will help you

✌️sai

Answer 2

The internal structure of the Earth is layered in spherical shells: an outer silicate solid crust, a highly viscous asthenosphere and mantle, a liquid outer core that is much less viscous than the mantle, and a solid inner core. Scientific understanding of the internal structure of the Earth is based on observations of topography and bathymetry, observations of rock in outcrop, samples brought to the surface from greater depths by volcanoes or volcanic activity, analysis of the seismic waves that pass through the Earth, measurements of the gravitational and magnetic fields of the Earth, and experiments with crystalline solids at pressures and temperatures characteristic of the Earth's deep interior.

Mass

Edit

The force exerted by Earth's gravity can be used to calculate its mass. Astronomers can also calculate Earth's mass by observing the motion of orbiting satellites. Earth’s average density can be determined through gravimetric experiments, which have historically involved pendulums.

The mass of Earth is about 6×1024 kg.[1]