Plate Tectonics Initial Review

What is a scientist who studies the earth called?

How many continents does the Earth have presently?

How many oceans does the Earth have presently?

Alfred Wegner thought these 2 Continents had coastlines appearing to fit like matching puzzle pieces.

This scientist observed enough evidence leading him to conclude the 7 continents once fit together in one giant super continent, Pangea!

Pangea initially Split into two major landmasses called Laurasia and Gondwana

The layer of the Earth with the greatest thermal energy is called the

This layer of the Earth is the thinnest, outermost layer, with its continental plates being the thickest part.

This layer is the name for the upper part of the mantle combined with the crust, it is hard and solid.

This layer is the name for the lower part of the mantle.

This layer of the Earth contains slowly moving rocks that makes up the Earth's continents and oceans.

This layer of the Earth is semiliquid and it is responsible for the convection currents that move plates around.

Which of the following events can BEST be explained by the movement of the plates in Earth's lithosphere? SELECT ALL THAT APPLY!

Where would seismic activity (Earthquakes) and volcanic activity (eruptions) be most likely to occur?

Alfred Wegner used these types of evidence matching between continents to help him draw his conclusions of Continental Drift.

SELECT ALL THAT APPLY!

Why do oceanic plates sink underneath continental plates in subduction, thus forming volcanic regions?

New seafloor is formed here