Plate tectonic

What feature is occurring at location B?

• Subduction Zone

• Ocean Ridge

• Convection Currents

• Hot Spot

Where is sea floor spreading creating new crust?

• A

• B

• C

• No where

What causes the plates to move?

• Earth's rotation spinning the continents.

• Ocean currents pushing the land.

• The wind in the atmosphere.

• Convection currents in the mantle.

What is the energy source for convection currents in the asthenosphere?

• Geothermal heat

• Heat from the sun that permeates through earth's crust

• Heat from the core

• Earth's magnetic field

Which type of crust is thinner but denser; continental crust or oceanic crust?

• Continental crust

• Oceanic Crust

What is this a picture of?

• plate tectonics
• continental drift
• pangea
• glacier scaring

What does the theory of continental drift state?

• The continents were once joined in a super-continent and have moved over time
• Continents are stationary and do not move
• The Earth is broken into lithospheric plates that move due to convection currents
• none of the above

What does this picture illustrate?

• subduction at a deep ocean trench

• seafloor spreading at a mid-ocean ridge

• diverging continental crust

• converging of continental crust

what is the name of the following picture ?

• Vally

• Ocean trench

• mid ocean ridge

• sea floor

When the oceanic crust is moving into the mantle we call this process ...........

• subduction

• sea flooring

• ocean vally

• ocean trench