NATS 1570 Study Guide - Quiz Guide: Convection, Plate Tectonics, Convergent Boundary

• School: York University
• Department: Natural Science
• Course: NATS 1570
• Professor: Daniela Monaldi

Document Summary

Earth is composed of 3 main layers -> core, mantel, crust. Inner core is mostly solid due to high pressures. Outter core is molten and can flow. Made of various rocks, silicates, and is molten. It can flow so convection currents in the mantle are present. Hot material rises, cools and sinks back down causing a circular flow. In the mantel, the convection current happens since it is warmer near the core and cooler at the crust. Debatable as to whether there are multiple layers of current. We find out about earths interior a couple of different ways, these include studying the magnetic field and how it shifts, earths gravitational field, and most importantly using earthquakes. We probe in the interior of the earth using earthquakes. Earthquakes produce two different types of motion or waves. Earth active surface since convection currents are active within mantle, earths crust is broken up into plates.