Question

How do geologists study direct evidence of Earth’s interior?

1. by collecting core rock samples
2. by measuring seismic wave activity
3. by analyzing how living things survive
4. by recording changes in climate patterns

Answer 1

Option (1)

Step-by-step explanation:

The core rock samples are usually referred to the rocks that are collected using the borehole drilling method. It is a method, where the drilling is done vertically downward using heavy machines. It is a very costly and time consuming process. But its very helpful in determining the subsurface rocks vertically downward. This enables a geologists to understand the interior of the rock and how the rock composition changes in the downward direction.

Thus, it is considered to be a direct evidence of studying the earth's interior.

Hence, the correct answer is option (1).

Answer 2

1. by collecting core rock samples

Step-by-step explanation:

Geologist obtain direct information about the interior of the earth by carrying out core rock sampling.

The rocks contained in the core used gives a better view as to the nature of the rock found at a particular depth in the earth. Core rock sampling involves the use of a drilling machine that has been built and designed for that purpose. As the drill goes through the earth, a core barrel helps collect intact samples of rock layers when the bits penetrates.

There is limit to which core rock sampling can be used to investigate the earth's interior due to the temperature and pressure in the interior. High temperature and pressure easily damages drill bits.

Other methods used to sample the interior of the earth are indirect. Such example is the use of seismic waves.