Theory of Isostasy

Options:

1. They are directly relate
2. They are inversely relate
3. They are not relate
4. They fluctuate randomly.

Correct Answer

Options:

1. Density does not change within one column but it changes from one column to other columns above the level of compensation.
2. Density changes both above and below the level of compensation.
3. Density remains constant within each column.
4. Density only changes in the lithosphere.

Correct Answer

Options:

1. The law of floatation.
2. The law of compensation.
3. The law of uniform depth.
4. The law of root form action.

Correct Answer

Options:

1. They are unrelate
2. Pratt's concept indirectly supports the law of floatation.
3. Pratt's concept directly contradicts the law of floatation.
4. Pratt's concept and the law of floatation are identical.

Correct Answer

Options:

1. Airy believes in the law of compensation while Pratt does not.
2. Airy believes in the law of floatation while Pratt does not.
3. Airy believes in uniform depth with varying density while Pratt believes in equal mass along the line of compensation.
4. Airy believes in varying density with uniform depth while Pratt believes in equal surface area underlying equal mass.

Correct Answer

Options:

1. The density of the Himalayas
2. The height of the Himalayas
3. The gravitational deflection difference
4. The average density of the Himalayas

Correct Answer

Options:

1. Lithosphere only
2. Pyrosphere only
3. Barysphere only
4. Both lithosphere and pyrosphere

Correct Answer

Options:

1. Uniform depth with varying density
2. The law of floatation
3. The law of compensation
4. Root form action

Correct Answer

Options:

1. Airy
2. Pratt
3. Hayford and Bowie
4. All of the above

Correct Answer

Options:

1. A plane where there is complete compensation of the crustal parts
2. A plane where there is no compensation of the crustal parts
3. A plane where there is complete compression of the crustal parts
4. A plane where there is complete expansion of the crustal parts

Correct Answer

Options:

1. Direct relationship
2. Inverse relationship
3. No relationship
4. Random relationship

Correct Answer

Options:

1. 10 km depth
2. 100 km depth
3. 1000 km depth
4. 10000 km depth

Correct Answer

Options:

1. The Earth's crust is made up of different types of rock
2. The height of mountains is directly related to their density
3. There is a balance between the weight of the Earth's crust and the underlying mantle
4. The ocean floor is denser than the continental crust

Correct Answer

Options:

1. Above the plane of compensation
2. Below the plane of compensation
3. At the plane of compensation
4. There is no such zone

Correct Answer

Options:

1. They both believed in the concept of root formation
2. They both believed in the law of floatation
3. They both believed in the concept of isostasy
4. They had no similarity in their views

Correct Answer

Options:

1. Joly
2. Airy
3. Wooldridge
4. Morgan

Correct Answer

Options:

1. Because they believed in a zonal phenomenon instead of a linear one
2. Because the temperature at a depth of 100 km would be too high for a level of compensation to exist
3. Because geological events could easily disturb the level of compensation
4. All of the above

Correct Answer

Options:

1. Linear
2. Zonal
3. Both
4. Neither

Correct Answer

Options:

1. 100 km
2. 16 km
3. 10 miles
4. 10 km

Correct Answer

Options:

1. Joly explicitly mentioned the law of floatation in his concept
2. Joly's concept is closer to the Airy's concept than the concept of Hayford and Bowie, which is in close agreement with the law of floatation
3. Joly's concept is in contradiction with the law of floatation
4. Joly's concept has nothing to do with the law of floatation

Correct Answer