Internal Structure of Earth Quiz 1

The crust accounts for _______ of earth's mass.

The fourth layer of ultra basic rocks is known as _____ layer.

Continental crust accounts only about ______ of the earth's global surface.

For every 108 feet descent bellow the surface of earth temperature rises for ________.

Thickness of core is:

When material breaks away due to earth flow it normally leaves:

Monsoon winds are largely caused by the differences in _____ between the land and the sea:

________ of mental material produces convection currents beneath the surface of the earth.

Earthquake waves _______ in velocity upon entering the mentle.

______ is the densest of all layers

_______ of outer layer prevents the core from becoming a liquid or gas.

Oxygen in earth crust is _______ .

Mohorovic Discontinuity is the difference of density from:

The proportion of ______ rocks decreases with depth.

Temperature of ______ ranges from 3000

Two parts of the crust are:

Just beneath the rigid lithosphere a soft layer of upper mental is called:

__________ Waves move material in their path parallel to the direction of movement.

Inner core of the earth contains:

According to Jaffery's division the 3rd layer is made up of _________.

Radius of solid inner core is _____ miles.

The most rigid and crystallize part of earth is _______.

______ waves move objects at right angles to their direction of motion.

An average depth of Sial varies from ______ km.

Hanging valleys are formed by the action of:

Earth flows normally take place:

The ______ Layer circumscribes the entire planet but is exposed only in ocean basins.

________ rocks are there in oceanic crust.

The fourth layer of earth described by Vander Gracht is ________

Liquid outer core is ______ thick.

5% of the lithosphere is composed of:

Mesosphere extends up to _______ km:

When earth and moon are farthest:

Core has a pressure of ______ times greater than the atmospheric pressure ______ billion.

If an earthquake occurs at 0 degree P and S waves are recorded everywhere to ______ degrees from its source.

Most widespread rocks in the world are:

Seismic waves are the result of:

Continental crust consists of _______ rocks.

________ is the least rigid sometimes described as plastic in nature.

When earth and moon are nearest that position is called:

_______ has oxides of iron, magnesium and silicon.

Temperature:

_______ has divided the entire earth into two broad divisions.

Silicon found in earth crust________.

Temperature of core could be:

When three heavenly bodies are in same line, that situation is:

The interior layer of the earth which is subjected to great heat and pressure is known technically as the barysphere. Which part of the earth does it refer to: