What are the two parts of the crust?
What is the basis of classification?
B) Why is the upper mantle called the
asthenosphere?
C) Magnetosphere of the earth is a result
of rotation. Explain.
lagnetosphe
Answers
Explanation:
Earth's crust is divided into two types: oceanic crust and continental crust. The transition zone between these two types of crust is sometimes called the Conrad discontinuity. Silicates (mostly compounds made of silicon and oxygen) are the most abundant rocks and minerals in both oceanic and continental crust.May 29, 2015
A) Earth's crust is divided into two types: oceanic crust and continental crust. The transition zone between these two types of crust is sometimes called the Conrad discontinuity. Silicates (mostly compounds made of silicon and oxygen) are the most abundant rocks and minerals in both oceanic and continental crust.
B) Basis of Classification– The characteristics based on which the living organisms can be classified. Characteristic: A distinguishing quality, trait or feature of an individual seen in all members of the same species.
C) The upper mantle is called asthenosphere, “astheno” is a Greek word meaning 'weak'. It is called weak layer because it is in liquid state where rock material deforms more readily, and magma formation takes place.
D) Earth's magnetic field is developed due to a phenomenon called dynamo effect. This electric current is a result of the spiral eddies generated due to earth's rotation and vertical currents formed due to the temperature difference between the outer core and inner core.