6.3 Plate Tectonics

What is the process called where mantle material is heated by the core and rises, causing plates to spread apart?

• Subduction

• Convection current

• Erosion

• Sedimentation

What are the two main types of crust shown in the diagram?

• Continental and Oceanic Crust

• Sedimentary and Igneous Crust

• Upper and Lower Crust

• Inner and Outer Crust

What layer is directly beneath the lithosphere according to the diagram?

• Plastic Asthenosphere

• Upper Mantle

• Sedimentary Deposits

• Oceanic Crust

What is the term used for the layer beneath the lithosphere that is partially molten?

• Plastic Asthenosphere

• Upper Mantle

• Oceanic Crust

• Continental Crust

What process occurs at a divergent boundary?

• Subduction

• Seafloor spreading

• Mountain building

• Earthquake formation

Which geological feature is formed by divergent boundaries on land?

• Oceanic trenches

• Rift valleys

• Mountain ranges

• Volcanic arcs

Where is new crust created?

• At convergent boundaries

• At divergent boundaries

• At transform boundaries

• At subduction zones

Which boundary type is associated with the creation of new crust?

• Convergent boundary

• Transform boundary

• Divergent boundary

• Static boundary

What is created at divergent boundaries?

• Mountains

• New crust

• Earthquakes

• Volcanoes

Which type of crust is denser?

• Oceanic crust

• Continental crust

• Both are equally dense

• Neither is dense