Earth Interior

Which of the following sources is not an artificial source which provide knowledge about the interior of the earth?
Options:
1. Density
2. Pressure
3. Temperature
4. Earthquakes
Option: D
Which of the following sources is not a natural source which provide knowledge about the interior of the earth?
Options:
1. earthquakes
2. volcanic eruption
3. temperature
4. seismology
Option: C
The average density of the whole earth is about
Options:
1. 5.5
2. 5
3. 3.5
4. 12
Option: A
What is the average thickness of the sedimentary rock layer on the earth’s surface?
Options:
1. 0.8 km to 1.6 km
2. 2.6 g cm-3 to 3.3 g cm-3
3. 3.0 to 3.5 at different places
4. 11.0 g cm-3
Option: A
Who attempted to calculate the average density of the earth in 1798?
Options:
1. Poynting
2. Cavendish
3. Newton
4. Galileo
Option: B
What was the average density of the earth calculated by Poynting in 1878?
Options:
1. 2.6 g cm-3 to 3.3 g cm-3
2. 3.0 to 3.5 at different places
3. 5.48 g cm-3
4. 5.49 g cm-3
Option: D
What is the density of the core of the earth?
Options:
1. 2.6 g cm-3 to 3.3 g cm-3
2. 3.0 to 3.5 at different places
3. 5.517 g cm-3
4. 11 g cm-3
Option: D
Which part of the earth has the highest density?
Options:
1. The sedimentary rock layer
2. The crystalline rock layer
3. The surface of the earth
4. The core of the earth
Option: D
What can be inferred about the constitution of the earth based on its density
Options:
1. Nothing can be inferred
2. The constitution of the earth is made up of only sedimentary rocks
3. The constitution of the earth is made up of only crystalline rocks
4. Numerous inferences can be drawn
Option: D
What is the density range of the second layer of rocks beneath the sedimentary layer?
Options:
1. 0.8 km to 1.6 km
2. 2.6 g cm-3 to 3.3 g cm-3
3. 3.0 to 3.5 at different places
4. 11.0 g cm-3
Option: C
What are the factors that determine the density of rocks inside the earth?
Options:
1. Weight of overlying rocks, temperature, and crystalline structure
2. Pressure of overlying rocks, temperature, and density
3. Weight of overlying rocks, pressure, and increasing trend of temperature
4. None of the above
Option: C
Why was it previously believed that the high density of the earth’s core was due to heavy pressure of overlying rocks?
Options:
1. The density of rocks always increases with increasing pressure
2. The weight and pressure of rocks increase with increasing depth
3. The density of rocks can never be increased beyond a critical limit
4. Both A and B
Option: D
What is the composition of the core of the earth?
Options:
1. Sedimentary rocks
2. Crystalline rocks
3. Iron and nickel
4. None of the above
Option: C
How is the composition of the core of the earth validated?
Options:
1. On the basis of the density of rocks
2. On the basis of the geocentric magnetic field
3. On the basis of the temperature at the core
4. Both A and C
Option: B
What explains the high temperature in the continental crust?
Options:
1. Disintegration and decay of radioactive minerals
2. Increase in depth
3. Continental drift
4. Plate tectonics
Option: A
What is the estimated temperature at the junction of mantle and outer molten core standing at the depth of 2900 km?
Options:
Option: D
What is the estimated temperature at the junction of outer molten core and inner solid core standing at the depth of 5150 km?
Options:
Option: D
According to the findings of boreholes and deep mining, what is the rate of temperature increase from the surface of the earth downward?
Options:
Option: B
What is the depth beyond which it becomes very difficult to find out the rate of increase of temperature?
Options:
1. 5 km
2. 8 km
3. 10 km
4. 15 km
Option: B
Options:
1. Tectonically stable areas
2. Arctic areas
3. Tectonically active areas
4. Desert areas
Option: C

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Earth Interior

Which of the following sources is not an artificial source which provide knowledge about the interior of the earth?

Options:

Which of the following sources is not a natural source which provide knowledge about the interior of the earth?

Options:

The average density of the whole earth is about

Options:

What is the average thickness of the sedimentary rock layer on the earth’s surface?

Options:

Who attempted to calculate the average density of the earth in 1798?

Options:

What was the average density of the earth calculated by Poynting in 1878?

Options:

What is the density of the core of the earth?

Options:

Which part of the earth has the highest density?

Options:

What can be inferred about the constitution of the earth based on its density

Options:

What is the density range of the second layer of rocks beneath the sedimentary layer?

Options:

What are the factors that determine the density of rocks inside the earth?

Options:

Why was it previously believed that the high density of the earth’s core was due to heavy pressure of overlying rocks?

Options:

What is the composition of the core of the earth?

Options:

How is the composition of the core of the earth validated?

Options:

What explains the high temperature in the continental crust?

Options:

What is the estimated temperature at the junction of mantle and outer molten core standing at the depth of 2900 km?

Options:

What is the estimated temperature at the junction of outer molten core and inner solid core standing at the depth of 5150 km?

Options:

According to the findings of boreholes and deep mining, what is the rate of temperature increase from the surface of the earth downward?

Options:

What is the depth beyond which it becomes very difficult to find out the rate of increase of temperature?

Options:

Options: