6th--Ch. 5 Plate Tectonics Review

Earth's magnetic field results from movements in the ___.

Using data from seismic waves, geologists have learned that Earth's interior is made up of ___.

According to Wegener's hypothesis of continental drift, ___.

The asthenosphere is part of which layer?

Pressure increases with depth toward the center of the Earth. Where is pressure the greatest?

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

Holes drilled into Earth's crust provide direct evidence about Earth's interior because of ___.

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

A place where 2 plates slip past each other, moving in opposite directions:

What is Earth's mantle like?

Where does a rift valley form?

Scientists think that convection currents flow in Earth's ___.

According to the theory of P.T., which layer is broken into separate sections called plates?

Process where the ocean floor sinks beneath the deep-ocean trench and back into the mantle:

What is Pangaea?

What is Earth's inner core like?

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

In sea-floor spreading, molten material rises from the mantle and erupts ___.

The place where two plates come together is known as a ___.

What technology did scientists use in the mid 1900s to map the mid-ocean ridge?

Earth's solid inner core is surrounded by the hot, molten metal of which layer?

What is the correct order of Earth's layers? (Outside > Inside)

Mid-ocean ridges are ___.

Geological theory that states the pieces of Earths lithosphere are in slow, constant motion: