Ch. 7 Plate Tectonics

Mountain range located on the seafloor in the middle of the ocean

Where two plates separate

The place where two plates meet is called a(n) ____________

Force created by rising mantle of ocean ridges-creates potential for plates to move from ridge

Which type of plate is more dense?

Circulation of material caused by differences in temperature and density

What evidence suggests that continents were once joined

Where two plates collide

Magnets point north when Earth's magnetic field has this

Sinking of a denser plate below a more buoyant plate at a convergent plate boundary

Draws dense rock away from mid-ocean ridges.

Where two plates slide by each other

Of all the Earth's tectonic plates, the ________plate is the largest

Who is the person that started the continental drift theory?

Process that forms new oceanic crust and moves it 

____________ move with the ocean crust as the seafloor spreads

Which 2 continents look like a perfect fit?

Cold, rigid outermost rock layer of Earth

Hypothesis that continents are in constant motion

Event in which the magnetic field reverses direction

What 2 mountain ranges fit together although they are an ocean apart?

What is Pangaea?

Capable of being molded or changing shape

Magnetic data from the ocean crust support seafloor ________________

When two plates slide by eachother a transform plate boundary forms and causes __________

Theory that Earth's surface is made of rock plates that move with respect to eachother

Force created by sinking of a plate,or slab, that pulls on the rest of the plate

Conforming to a type, standards, or regular pattern

The word___describes the forces that shape Earth's surface and structures that form as a result