Question 1

Which of the following is an indirect source of information about the interior of the earth?

Accepted Answer

Meteors are an indirect source of information about the interior of the earth because they belong to the same type of materials that the earth is made of, helping scientists understand planetary composition.

Question 2

Which earthquake waves are called surface waves?

Accepted Answer

L-waves (surface waves) are the last to report on seismographs and travel along the earth's surface, causing the most destruction.

Question 3

What is the approximate depth of the crust from the surface?

Accepted Answer

The crust is the brittle outer part of the earth with a variable thickness, averaging about 30 km under continents and 5 km under oceans.

Question 4

Which layer of the earth is known as NIFE?

Accepted Answer

The core is composed of heavy metals like Nickel (Ni) and Iron (Fe), hence it is frequently referred to as NIFE.

Question 5

The upper portion of the mantle is called:

Accepted Answer

The upper portion of the mantle is known as the asthenosphere, which is the main source of magma and extends up to 400 km.

Interior of the Earth