by making inferences based on data from seismic waves.
Easy... with years and years of test, runs and special tools the scientist were able to discover layer by layer towards the earths core with knowledge of gravity they were able to consider that the core as a (giant magnet) to hold our world together
Scientists have placed sensors around the globe which detect sound and other waves that pass or don't pass through the Earth. When an event such as an Earth quake happens a lot of noise and energy is created (released). Different types of rocks and rock states (solid, liquid, etc) effect these sounds in certain identifiable ways. Using these sounds picked up on the other side or angle from where the event occurred (Quake), Scientists determine the composition of the Earth.
No one has yet to penetrate the crust of the Earth and reach a lower layer, so this is not totally proven.
They are scientists, They use machines and dig. i think...
How did scientist deduce which layer of the earth is solid liquid or semisolid
Well it is much smaller than the actual earth. The crust is a little tiny tiny sliver compared to the other layers. It doesn't get to show the temperature or state of matter on a model (at least most).
A geologist does that and he/she studies both the liquid and solid materials of earth.
If we're talking layers of the earth, that would be the upper mantle, below the crust.
the Earth has 3 main layers the Atmosphere, Crust, and Mantle/Core the Atmosphere is made up of mostly gas the Crust is made up of (mostly) solids and the Mantle/Core is filled mainly with liquid metals
They want to look into further details about any natural disaster that might happen that can damage the earth or OR they just want to discover more about the Earth's layers
PORN
The outer core is the only Earth layer that is liquid.
how scientist were able to arrive to the district layer of the earth
Hannah Montana
The outer core is liquid.
hi
The density of Earth's layers
Earth
the answer is the mantle
They measure how waves from earthquakes travel through the earth, and they test how waves travel through liquid and solid and goo, and they compare the results to find the consistency of the inner core and other layers of the earth.
the earth is in solid and liquid form thus penetration is different tha:t account for the different earth layers.
The physics and the formation of the Earth.