Physical Geography - Lithosphere - MCQs with answers - Part I
1. Who gave the theory of Nebular Hypothesis?a. Harry Hess
b. Immanuel Kant
c. F B Taylor
d. Kepler
View Answer / Hide AnswerANSWER: b. Immanuel Kant
The Earth, fifth planet in the solar system dates back to 4.6 billion years. Nebular Hypothesis is a theory given by Kant. It was later revised by Laplace. According to this hypothesis, planets were a resultant of a cloud kind of material that is associated with a slow rotating star.
a. Laplace
b. Otto Schmidt
c. Carl Weizascar
d. Wilson Smith
View Answer / Hide AnswerANSWER: d. Wilson Smith
The other three persons mentioned above revised the Nebular Hypothesis. In 1950, Schmidt and Weizascar revised it to consider that Sun is surrounded by various gaseous materials along with the dust. This collision of particles let to formation of a cloud and their accretion resulted in the planets.
i. The inner core is also known as barysphere.
ii. The outer core is solid in nature.
a. I only
b. ii only
c. both
d. none
View Answer / Hide AnswerANSWER: a. I only
The inner core is solid in nature while the outer core is liquid in nature. The inner core has an approximate temperature of 6000 degree celcius. Above this core, there is a outer liquid core which consists of molten iron and nickel.
a. Less rigidity
b. High temperature
c. Low pressure
d. All the above
View Answer / Hide AnswerANSWER: d. All the above
Asthenosphere is a part of the upper mantle. It is a plastic kind of layer lying between the inner-outer mantle and the outer-outer mantle. This is also the main source of magma coming out of volcanic eruptions.
a. The mohorovicic discontinuity
b. The moho discontinuity
c. Guttenberg's discontinuity
d. The Litho discontinuity
View Answer / Hide AnswerANSWER: c. Guttenberg's discontinuity
The crust and the mantle is separated by the mohorovicic discontinuity. This is also known as the moho's discontinuity. The discontinuity between the mantle and the core is called the guttenberg's discontinuity.
a. The mohorovicic discontinuity
b. Guttenberg's discontinuity
c. Litho discontinuity
d. None of the above
View Answer / Hide AnswerANSWER: a. The mohorovicic discontinuity
i. The period of nearest distance between the moon and earth is called apogee.
ii. The period of farthest distance between the moon and earth is called perigee.
a. I only
b. ii only
c. both
d. none
View Answer / Hide AnswerANSWER: d. none
The period of nearest distance between the moon and earth is called perigee. The period of farthest distance between the moon and earth is called apogee. The nearest distance is 356,000 kms while the farthest distance is 4,07,000 kms.
i. The period of nearest distance between the sun and the earth is called aphelion.
ii. The period of farthest distance between the sun and earth is called perihelion.
a. I only
b. ii only
c. both
d. none
View Answer / Hide AnswerANSWER: d. none
The period of nearest distance between the sun and earth is called perihelion that occurs on January 3rd ,while the period of farthest distance between the sun and earth is called as aphelion, that occurs on July 4th.
i. The day and night are of equal length throughout the year at equator.
ii. The region that receives maximum heat is called torrid zone.
a. I only
b. ii only
c. both
d. none
View Answer / Hide AnswerANSWER: c. both
The Earth's axis is inclined at an angle of 661/2 degree which is the reason for different seasons and variations of day and night. Had it been perpendicular, it would have resulted in equal days and nights at all the time throughout the year.
a. Equal nights
b. Equal distance
c. Equal pressure
d. Equal angles
View Answer / Hide AnswerANSWER: a. Equal nights
Equinoxes means equal nights. The sun lies vertically overhead at the equator on March 21st and 23rd of September. On these two days, all places on the Earth have equal days and equal nights.
