NCERT Class 11 Geography — Chapter 2: Interior of the earth

With reference to 'Body Waves', consider the following statements: 1. They are generated due to the release of energy at the focus. 2. They move only in a vertical direction towards the surface. 3. They interact with surface rocks to generate surface waves. Which of the statements given above is/are correct?

Which of the following statements is correct regarding the 'Shadow Zone' of P-waves?

With reference to the 'Mantle', consider the following statements: 1. The lower mantle is in a liquid state. 2. It extends from Moho's discontinuity to a depth of 2,900 km. 3. It has a lower density than that of the crust. Which of the statements given above is/are correct?

Consider the following statements regarding the 'Crust': 1. It is the innermost solid part of the earth. 2. It is brittle in nature. 3. Its thickness varies between oceanic and continental areas. Which of the statements given above is/are correct?

With reference to the sources of information about the interior of the earth, consider the following statements: 1. Mining and drilling projects provide direct information about the earth's interior materials. 2. Meteors are considered a direct source of information because they originate from the earth's core. 3. Gravitation and magnetic fields are indirect sources of information. Which of the statements given above is/are correct?