Internal Structure of Earth Quiz 1

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

When earth and moon are nearest that position is called:

Most widespread rocks in the world are:

Mesosphere extends up to _______ km:

Hanging valleys are formed by the action of:

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

The proportion of ______ rocks decreases with depth.

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

Earth flows normally take place:

Mohorovic Discontinuity is the difference of density from:

_______ has divided the entire earth into two broad divisions.

An average depth of Sial varies from ______ km.

The fourth layer of earth described by Vander Gracht is ________

Silicon found in earth crust________.

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

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

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

Continental crust consists of _______ rocks.

Temperature of core could be:

Oxygen in earth crust is _______ .

Temperature:

______ is the densest of all layers

The crust accounts for _______ of earth's mass.

Thickness of core is:

When earth and moon are farthest:

________ rocks are there in oceanic crust.

Two parts of the crust are:

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

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

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

Seismic waves are the result of:

Inner core of the earth contains:

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

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

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

The most rigid and crystallize part of earth is _______.

Earthquake waves _______ in velocity upon entering the mentle.

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

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

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:

_______ has oxides of iron, magnesium and silicon.

Liquid outer core is ______ thick.

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

5% of the lithosphere is composed of:

Temperature of ______ ranges from 3000

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

Radius of solid inner core is _____ miles.