Plate Tectonics Review Quiz

The boundary between the crust and mantle is discovered in 1909 by Andrija Mohorovicic at a depth of ___km beneath Ocean Basins.

The Upper Mantle, known as the Asthenosphere, is made up of rocks rich in Fe & Mg but poor in silica and is ___km thick.

The Core of the earth is made up of mostly ___ & Nickel.

The Outer Core is ___km thick and made up of molten nickel and iron.

The ___ is the layer that’s beneath the crust and has a thickness of 2900km.

The ___ - Layer that’s beneath the crust - Has a thickness of 2900km.

The hotter part of the earth's mantle is closer to the ______

More than half of the world's volcanoes are found in the ______

The ______ plate is mostly continental and covers the Arabian Peninsula

The ______ plate is oceanic and is beneath the Pacific Ocean off the Pacific Northwest of the U.S.

Alfred Wegener was a German ______ and geophysicist

The ______ belt is formed by the collision of African and Indo-Australian plates with the southern margin of the Eurasian Plate