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2 years ago

How did scientist discover that earths outer core is liquid

Chemistry

1 answer:

liberstina [14]2 years ago

6 0

By studying seismic waves

Explanation:

Scientists discovered that the earth's outer core is liquid by simply studying seismic waves.

Seismic waves are elastic waves that have been used by geophysicists to study the earth's interior.

Interior of the earth is inaccessible due to high pressure and temperature conditions therein.
To study this part of the earth, an indirect method should be used.
Seismic waves produced during an earthquake due to their permeating nature have been used to study the interior.
Seismic P-waves can pass through any materials because they are longitudinal waves. They go through solids, liquids and gases.
S-waves can only pass through solids and not fluids.
On a seismograph, it was discovered that the S-waves were cut off in a part of the reading.
The waves re-appeared after a distance.
Since S-waves cannot pass through liquids, it has been hypothesized that the outer core is liquid.

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