Chapter 3 Earth Plate Tectonics

___________ are the remains of the material that formed the early solar system and are thought to be similar to material in Earth's interior.

Waves that radiate out from an earthquake's focus are called ______ waves.

The _____ is less than 1% of Earth by mass. This layer of the Earth is made up of two types, oceanic and continental.

The _____ is hot rock composed of primarily silicates, iron and magnesium. It represents about 68% of the Earth's mass and makes up one of the layers of the Earth's crust.

The layer of the Earth that is mostly iron and some nickel metal and makes up about 31% of the Earth is called the _____.

The Layers of the Earth are divided by mechanical properties and are called the lithosphere, _____, mesosphere, outer core, and inner core.

The layer of the Earth called the _____ is composed of all of the crust and the portion of the upper mantle and behaves a a brittle, rigid solid.

This layer of the Earth _____ is partially molten upper mantle material and behaves plasitcally and can flow.

The layer found directly under the asthenosphere is solid is called the _____.

The layer creating Earth's magnetic field is a liquid layer of metal found directly below the mesosphere and is called the _____________.

The solid most inner most layer of the Earth is called the ________ ______.

Alfred Wegener was a German meteorologist who named the super continent Pangaea and developed the hypothesis of _____________ drift.

The super continent named by Alfred Wegener was called _____________.

Which of the following is not evidence to support the theory of continental drift?

When old seafloor sinks back into the Earth to be recycled this is called _____