Plate Tectonics Review

What is the correct order (starting from the surface) of Earth's layers?

What did scientists in a submersible see when they observed the mid-ocean ridge?

The lithosphere is broken into sections called  _____________, which float on top of the asthenosphere.

Alfred Wegener believed that the continents had once been joined in one landmass called

The asthenosphere and lithosphere are part of which layer?

What forms when continental plates pull apart at a divergent boundary on land?

What is Pangaea?

Subduction occurs where the oceanic crust bends down toward the mantle at a

What type of boundary occurs when a continental plate collides with an oceanic plate.

Earth's inner core is

The place where two plates come together is know as a

Geologists study the constructive forces, such as volcanoes, that build up landmasses on Earth's surface.

To support his theory, Wegener provided evidence  from _____________, traces of ancient organisms preserved in rock.

The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle is known as

The mantle makes up what percentage of Earth by volume?

What theory claims that all the continents were once joined as a single supercontinent and have since drifted apart?

Pressure increases from Earth's surface toward the center of Earth.

The part of the mantle that is made of soft rock that seems plastic-like and bends

The outermost layer of Earth is called the mantle.

The longest mountain chain on Earth that mostly lies under the ocean.

The mid-ocean ridge occurs along transform boundaries.

The geological theory that states that pieces of Earth's lithosphere are in constant, slow motion is the theory of

The North American Plate and the Eurasian plate are moving apart at a very slow rate.

How did scientists discover that rocks farther away from the mid-ocean ridge were older than those near it?

Combined, the inner core and outer core make up what percentage of Earth by volume?

Scientist that study the forces that shape Earth's surface are called

Two of earth's plate's slip past each other, moving parallel but in opposite directions at a

Earth's mantle is

The mid-ocean ridge is

The place where two plates come together is known as a

Any trace of an ancient organism that has been preserved in rock is called a

Most geologists rejected Alfred Wegener's idea of continental drift because

A rift valley forms where two plates

Pressure increases with depth toward the center of Earth. Which layer would you expect pressure to be the greatest?

6. Forces that shape Earth's surface by building up mountains and landmasses are called

Scientists who study the forces that make and shape planet Earth are called

According to Wegener's hypothesis of continental drift,

Earth's solid inner core spins inside the hot, molten metal of which layer?

The formation of volcanoes and mountain ranges can be explained by the theory of

This process continually adds new crust to the ocean floor along both sides of the mid-ocean ridge.

Which layer is made up of the continents and oceans?

An ocean plate sinks beneath a trench and back into the mantle in a process known as

Earth's magnetic field results from the spinning of the

The crust makes up what percentage of Earth by volume?

Geologists learn about Earth's interior by studying _____________, which move through Earth during an earthquake.

Oceanic crust is made up mostly of an igneous rock called