When was the make-up of each layer determined by whom?

Question

PLEASE!!! I really need HELP!

Answer 1

Okay, if I interpret your question, it's about the different layers earth has...?

I don't know about the person who determined it, but I can tell you about the layers.

There's the land and seas and whatever.
There's the crust, the thing land and seas stay on.
There's the asthenosphere, this really hot gooey rock layer that separates the crust from the mantle.
The upper mantle is the mantle that's higher than the lower mantle.
The lower mantle is the mantle that the upper mantle covers.
The outer core is (I think) hard rock.
The core is reeeeeeaaaaaaalllly hot, it's as hot as the sun, some people think.

Answer 2

till we superior the seismograph we've been purely having assumption approximately earth layers. After interpreting the seismograph image recorded the earthquake waves purely we leaned approximately earth layers. because of the fact diverse waves from earthquake behaves in a various way whilst it travels via earth center. The Richter scale became superior interior the 365 days 1935.

Answer 3

The make up of each layer of what ?????

Answer 4

each layer of what?

Answer 5

Your questions have to make sense so that we can answer them