Earth Science

Scientists used this during the 40's & 50's (after WWI) to map large areas of the ocean floor

This layer of the Earth is made of liquid iron.

This is the idea that geologic processes that operate today also operated in the past.

The type of force that shapes the surface of the Earth by building mountains.

Two plates move side by side, but do not overlap are found at a ______________.

This includes the top layer of the mantle.

Two plates that pull apart, and allow magma to fill in the gap are found at a ______________.

A _______ is a device that can detect changes in a magnetic field. 

This is a cycle of heating, rising, cooling, & sinking of magma in the asthenosphere.

This German meteorologist who developed the theory of Continental Drift.

Scientists use data from ______________ to learn about the inside of the earth. 

These are breaks & cracks in the Earth's crust where two pieces of crust become offset.

This is the name of the southern piece of land that existed after Pangaea broke apart.

All of the following are pieces of evidence that support Continental Drift except: 

This is the bottom layer of the mantle.

Who developed the theory of Seafloor Spreading?

Two plates moving together & both plates push up to create mountains are found at a __________.

The study of the Earth.

He was a geologist in the late 1700's, and developed the principle of uniformitarianism.

Where are youngest rocks in the seafloor located?

This layer of the mantle contains hot, taffy-like molten rock.

This layer of Earth is made of solid iron

This type of force slowly wears away at Earth's surface.

Two plates that push together and overlap are found at a ________________.