Earth Science Chapter 17

Continental crust is typically younger than oceanic crust

 What was the name of the single continent that existed 200 million years ago?

Crust is neither created or destroyed along which type of boundary?

Convection currents drive the movement of the tectonic plates

Which of the following features forms when two oceanic plates converge?

The theory of continental drift was rejected at the time it was proposed because

The boundary where two plates collide

Places where tectonic plates move apart are called

The process by which plates sink back down into the earth is

Who came up with the idea of continental drift?

Tectonic plates interact at places called plate 

What type of boundary occurs when two plates are moving away from each other?

What process creates trenches?

Why does molten rock in Earth's mantle rise to Earth's lithosphere in a convection current?

What features form along continental-continental convergent boundaries?

A divergent boundary over land forms a(n)

At which tectonic plate boundary do plates slide horizontally past each other?

The process that creates new ocean crust by pushing up magma at ocean ridges

Which is a piece of evidence for continental drift?

What happens along a divergent boundary on the seafloor

What feature is present at a transform boundary?

The idea that the continents used to all be attached