Topic: Earth Structure (21 Questions)

Which of the following are the evidences of the phenomenon of continental drift?

• I.The belt of ancient rocks from Brazil coast matches with those from Western Africa.
• II.The gold deposits of Ghana are derived from the Brazil plateau when the two continents lay side by side.
• III.The Gondwana system of sediments from India is known to have its counterparts in six different landmasses of the Southern Hemisphere.

Select the correct answer using the code given below.

Consider the following statements:

• Statement I.In the context of effect of water on rocks, chalk is known as a very permeable rock whereas clay is known as quite an impermeable or least permeable rock.
• Statement II.Chalk is porous and hence can absorb water.
• Statement III.Clay is not at all porous.

Which one of the following is correct in respect of the above statements?

Consider the following statements:

• Statement I.Scientific studies suggest that a shift is taking place in the Earth's rotation and axis.
• Statement II.Solar flares and associated coronal mass ejections bombarded the Earth's outermost atmosphere with tremendous amount of energy.
• Statement III.As the Earth's polar ice melts, the water tends to move towards the equator.

Which one of the following is correct in respect of the above statements?

Consider the following statements: Statement-I: The atmosphere is heated more by incoming solar radiation than by terrestrial radiation. Statement-II: Carbon dioxide and other greenhouse gases in the atmosphere are good absorbers of long wave radiation. Which one of the following is correct in respect of the above statements?

Consider the following statements: Statement-I: Thickness of the troposphere at the equator is much greater as compared to poles. Statement-II: At the equator, heat is transported to great heights by strong convectional currents. Which one of the following is correct in respect of the above statements?