Earth Science Review

Who formulated the continental drift hypothesis?

• Charles Darwin

• Isaac Newton

• Alfred Wegener

• Albert Einstein

What is a key characteristic of divergent boundaries?

• Plates slide sideways past each other

• Plates come together to form mountain ranges

• Magma fills in where plates move apart, often creating volcanoes

• One plate goes under another

What happens at convergent boundaries?

• Plates move apart

• Plates slide past each other

• Plates come together and can form mountain ranges

• Plates do not interact

What is the role of convection currents in the Earth's mantle?

• They cool down the magma

• They prevent the movement of tectonic plates

• They move the plates of the Earth by variations in density and temperature of magma

• They create earthquakes directly

Like the spreading sea floor of the Atlantic Ocean,  Africa's Great Rift Valley is caused by

• Convergent plates
• Frequent earthquakes
• Divergent plates
• A tsunami

Subduction plate boundaries around the Ring of Fire occur where

• Continental plates run into each other
• The sea floor is spreading
• Denser ocean crust goes under continental crust
• Fault lines are building potential energy 

What geological feature is commonly formed at transform boundaries?

• Volcanic islands

• Mountain ranges

• Earthquakes along fault lines

• Deep ocean trenches

What is primarily formed at convergent boundaries where two continental plates collide?

• Volcanic arcs

• Mid-ocean ridges

• Transform faults

• Mountain ranges

Process by which new ocean crust forms.

• Seafloor spreading

• Continental drift

• Mid-ocean ridge

• Rift

The zone where one plate slides under another is called the

• Convergent zone
• Subduction zone
• Transform zone
• Mantle zone