Plate Tectonics

According to the plate tectonic theory, where is new oceanic crust being formed?

• on the beach
• in the deepest parts of the ocean
• on the abyssal plain
• mid ocean ridges

All of the following is evidence that Alfred Wegener used in his theory of continental drift EXCEPT

• fossils of the same plants and animals were found on different continents
• convection currents in the mantle
• matching rock layers on different continents
• continents seeming to fit together like a puzzle

What is the landform created when 2 continental plates collide?

• mountain range
• mid ocean basin
• volcano
• canyon

The circular flow of magma due to differences in temperature and density that occur in the mantle is called

• plate movements
• sea floor spreading
• convection currents
• subduction

The Earth's outer layer, the lithosphere, is broken up into large chunks called ________ that move on top of the mantle due to convection.

• tectonic plates
• plate boundaries

• rift valleys
• volcanic islands

Crust is neither created nor destroyed at the type of boundary were plates slide past each other. What is this boundary?

• transform boundary
• convergent boundary

• divergent boundary
• transportation boundary

The Himalaya Mountains are the tallest mountains on Earth. They formed when India slammed into Asia. What types of crust were involved in this collision?

• continental to continental crust

• continental and oceanic crust
• Oceanic and oceanic crust
• lithospheric and mesospheric

The mid ocean ridge is an example of which type of boundary

• transform

  
  

• convergent
• divergent
• traditonal

Which statement is true about earth's tectonic plates?

• they stay in one place all the time
• they move 1 meter
• they are constantly moving
• they moved about 200 million years ago, but do not move anymore

Seafloor spreading occurs at what kind of plate boundary?

• divergent
• convergent

  
  

• transform
• all of the above