Unit 1 Plate Tectonics Review

Heat transfer within a fluid takes place by

What technology did scientists use to map mid-ocean ridges?

What are the 4 main layers of the Earth?

Scientists think that convection currents flow in Earth's

How did scientists discover that rocks were older as you move away from the mid-ocean ridge?

Sea floor spreading occurs at

What is Pangaea?

Which is Earth's thickest layer?

Which type of evidence was NOT used by Wegener to support his hypothesis?

Who discovered Sea Floor spreading?

What was Alfred Wegener's idea?

The transfer of heat through empty space is called

what is the thinnest layer of Earth's layers

Holes drilled several miles into Earth's crust can show us:

The place where two plates collide is called a

A collision between two pieces of continental (land vs. land) crust at a converging boundary produces a:

What plate movement forms a rift valley?

What kind of man was Alfred Wegener?

When a heat source is removed from a fluid, convection currents in the fluid will...?

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

Is this the End?

The boundary where two plates slide past each other and grind.

Earth's inner core is ______________ .

Using data from seismic waves, we learned that Earth is made up of several

Old oceanic crust is more dense than new oceanic crust because it is

What causes tectonic plates to move?

Does Mr. Daybell like awesome music?

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

What is sea floor spreading

What color is the Earth's Mantle?

What sphere contains the Earth's plates?

What is the theory of Plate Tectonics?

Earth's magnetic field results from movements in the

Geologists obtain indirect evidence about earths interior by