Plate Tectonics

The volcanoes located on the Ring of Fire are most likely caused by

• seafloor spreading

• a transform boundary

• a subduction zone

• metamorphism

Which best describes this diagram?

• divergent boundary

• subduction zone

• transform boundary

• volcanic islands forming

The diagram illustrates that

• seafloor spreading occurs at a convergent boundary

• the oldest oceanic crust is located far from where the plates are separating

• the continents are slowly moving toward each other

• the youngest oceanic crust is located far from where it is separating

The source of energy that drives or causes tectonic plate movement is

• convection currents in the mantle

• subduction of oceanic crust

• plates grinding past one another

• slab pull

This movement of tectonic plates will MOST likely cause

• mountains to form

• seafloor spreading

• an earthquake

• a rift valley

The Earth's surface is divided into

• several oceanic plates

• oceanic and continental plates

• continental and crustal plates

• seven continental plates

Why does the continental crust rise over the oceanic crust?

• The continental crust is less dense.

• The oceanic crust is thinner.

• The continental crust is not made of granite.

• The oceanic crust is younger.

Looking at the diagram, where do think most earthquakes would most likely occur?

• in the center of tectonic plates

• along the boundaries of tectonic plates

Which geological force might be responsible for creating a mountain range?

• diverging tectonic plates

• transforming tectonic plates

• converging tectonic plates

The Appalachian Mountains were formed when

• volcanoes erupted

• landmasses split

• landmasses came together

• earthquakes happened