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March 15, Earth Layers

Across
it’s layers vary greatly in size, composition, temperature and pressure
1 of 2 main types of evidence of how to learn about Earth’s interior; from rock samples - rocks drilled from deep inside Earth allow geologists to make inferences about conditions
2nd of 2 main types of evidence of how to learn about Earth’s interior; from SEISMIC waves - seismic waves produced by earthquakes allow scientists to measure the speed in which they travel, giving clues to the structure of the planet
Physical layer; solid material extending all the way to the Earth’s core - ; Strong, lower part of the mantle between the asthenosphere and the outer core;MANTLE
denser basaltic crust formed at mid-ocean; heavier and thinner crust - portion of the crust that is made of darker,
central part of the earth below the mantle; central part of the Earth that is made mostly of the metals iron and nickel; consists of 2 parts: outer and inner core;
Physical Layer; layer of molten (liquid) metal that surrounds inner core
Down
Physical Layer; solid part of the core
between Earth's crust and core; layer of solid, hot rock 40 kilometers beneath the surface;
portion of the crust that made is made lighter granitic crust; lighter and thicker crust;
Physical Layer - Softer part of the mantle; where the tectonic plates move; Solid, plastic layer of the mantle beneath the lithosphere; made of mantle rock that flows very slowly, which allows tectonic plates to move on top of it; - MANTLE
THIN layer of SOLID rock that forms the Earth’s outer “Skin” (ABOVE THE MANTLE) and includes: the oceanic and continental crusts, the mantle (Litho, Astheno, Meso), core (inner and outer);
uppermost part of the mantle about 100 km thick; Physical Layer; Solid, outer layer of the Earth that consists of the crust and the rigid upper part of the mantle; - MANTLE