Plate Tectonics!!

What theory states that new ocean crust formed at ocean ridges where plates are diverging?

• SEAFLOOR SPREADING

• Tectonic Plates

• Pangea

• Continental drifting

The edge of ONE plate sinking BELOW another plate is called:

• tectonics

• faults

• eruption

• Subduction

What scientist is credited with developing the theory of continental drift?

• Harry

• Alfred Wegener

• Copernicus

• Ptolemy

What is the outermost layer of the earth?

• mantle

• core

• Crust

• mesophere

Which following statement is true about the earth's inner core.

• made of silicon and aluminum

• hydrogen

• oxygen

• Mostly made of Iron

Which statement BEST describes one difference between the earth's mantle and crust?

• The mantle is less dense than the crust.

• The crust is hotter than the mantle.

• The crust is a liquid and a solid.

• The mantle is the thinnest layer.

What causes mtns. to form?

• Two divergent plates under the sea.

• Two continental plates colliding together.

• Two continental plates that are moving away from each other.

• two oceanic plates sliding past one another.

Which is true regarding the earth's mantle?

• Made up of mostly metal and only liquid.

• Materials and plates move due to the convection currents.

• its the most densest of all the layers.

• It's the hottest of all layers

The tectonic plates move due to the earth's?

• Inner Core

• Outer Core

• Gravity

• convection currents

The mantle is the _____________ layer.