Question

Scientists discovered that the inner core of Earth is a solid. Explain what evidence supports this thinking. Be sure to include how pressure, temperature, and density play a role.

Answer 1

Answer:

Hi! The answer is this, The pressure on the inner core makes the inner core into a solid state, the temperature is hotter that the outer core but it's not hot enough to melt a substance do to the pressure squeezing down from all the layers above! :3

Explanation:

I took this test and got 100% on it so if you need help on other questions just let me know! <3

P.S: Make sure you put your answer in your own words!

Answer 2

Explanation:

From the studies done on seismic elastic waves, it has been discovered that the innermost core of the earth is a solid concentric layer. Seismic P and S waves can be propagated through solids but the s-waves are cut off in contact with a liquid medium. This is because s-waves are shear waves and fluids do not shear.

• At the outer core, the s waves is cutoff and it reappears in the region of the inner core.
• This shows that the inner core is solid.
• The inner core is made up of iron and nickel with some other siderophiles.
• At the inner core, the pressure is very great. Pressure here is about 350gigapascal.
• This huge pressure compresses matter into solids despite the very high temperature.
• Also, during the differentiation of the earth, the heavier minerals moves downward to the core due to their density. Metals in the core have density of about 13g/cm³.

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