LAYERS OF THE EARTH

The layer of the earth that is composed of rock, yet flows due to extreme heat and pressure, is known as the _____.

asthenosphere

The geosphere refers to the _____.

All of the above, at the same time.

The hottest layer of the earth is the _____.

inner core

Match each Earth layer with the correct description.

inner core- innermost region of the earth; composed of solid iron outer core- layer immediately outside the inner core; composed of liquid iron and sulfur lower mantle- innermost layer of the two mantle layers; composed of rock and cooler than the core upper mantle- outermost layer of the two mantle layers; includes the asthenosphere and lower lithosphere crust- the outermost layer that forms the surface of the earth

Carl is on an expedition to the bottom of the ocean. As the submersible sets down on the ocean floor, it is resting on what layer of the earth?

lithosphere

The layer of the earth that is composed of large plates that interlock and move over time is the _______.

lithosphere

The ability of solid rock to flow is called

plasticity

An area where the earth's crust would be expected to be thin would be _____.

under the Pacific Ocean