Divergent Boundary Practice

Draw arrows representing the direction in which plates move in a DIVERGENT PLATE BOUNDARY.

Match the following:

• Harry Hess

• The scientist who discovered that the continents were once joined together.

• Alfred Wegener

• The process of using sound waves to determine the depth of the ocean floor.

• Rift valley

• This land feature is created when two pieces of continental crust diverge.

• Sonar Mapping

• The scientist who used sonar mapping to determine that the oceans were spreading.

• Mid ocean ridge

• This land feature is created when two pieces of oceanic crust diverge.

Which of the following statements is FALSE about iceland?

• Iceland is constantly shrinking because of plate movement

• Iceland is created because of a divergent boundary

• Iceland is created because of a hotspot

• Iceland has younger rock located in the center and older rock along the outer edge.

Categorize the pictures and descriptions into the correct divergent boundary type:

Groups:

(a) Oceanic-Oceanic

,

(b) Continental-Continental

• 
• land pulling apart

• Mid Atlantic Ridge

• East African Rift Valley

• New seafloor is created

• East Pacific Ridge

• Rift Valley

• 
• Mid Ocean Ridge

Iceland is the only place on Earth with plate​ (a)   that lies ​ (b)   sea level.

• growth
• shrinking
• above
• below

Iceland along with other divergent boundaries creates: (select the 2 that apply)

• Faults

• Volcanic Activity

• Plate Shrinking

• Earthquakes

Select the part of Iceland with the YOUNGEST ROCK!

Which ocean is spreading faster?

• Mid Atlantic Ridge

• East Pacific Ridge

What causes the plates to move?

(Alfred Wegener didn't know this)

• Convection currents in the ocean

• Convection currents in the asthenosphere (upper mantle)

• Convection in the atmosphere

In the orange layer (mantle), draw convection currents that would cause the plates to diverge or move apart.