ell whether right or wrong. Correct the
rong statement
D) The density of various materials is not
the same in the interior of the earth.
3) The core of the earth's interior is made
up of hard rock
D) Secondary waves cannot pass through
outer core.
)) Continental crust is made up of silica
and magnesium
nswer the following
-) What are the two parts of the crust?
What is the basis of classification?
:) Why is the upper mantle called the
asthenosphere?
) Magnetosphere of the earth is a result
of rotation. Explain.
raw neat diagrams, label them and
plain.
The interior of the earth
Answers
Answer:
1)Density is volume per unit mass, therefore, materials with different masses and volumes will have varied densities hence the density of various materials is not equal though the force of gravity is the same
2)The core of the earth is in the form of a solid sphere with a radius of 1220 kilometers which is 20% of the earth's radius. The inner core is said formed by metals like the iron and nickel alloy and other heavy elements
3)The upper part of the mantle is made up of peridotite, a rock denser than rocks common in the crust. The crust and the upper mantle make up the lithosphere.
4) The two parts of crust, the outer and thinner-most part of the Earth are Oceanic crust and Continental Crust. This classification is based on chemical composition.
6) This is made up rock that is fluid and can move.It is this fluidity that powers the movement of the tectonic plates of the Earth's crust
7)The earth's rotation gives them eddy (circular) motion. Electric currents develop in these spiral eddies of liquid iron and thus magnetic field is generated.HENCE,The magnetic field thus developed around the earth, is called magnetosphere
Explanation: