Question

INSTRUCTIONS: Fill in the blanks with the most appropriate word. Ensure that your answers are underlined and bold.

Answer 1

Answer:

Oceanic, Seafloor Spreading, Submarine Volcanic, Rift Valleys, Great african

Explanation:

DIVERGENT PLATE MARGIN (Also known as a constructive boundary or an extensional boundary)

Here two plates moves __away__________from each other. Molten rock, or magma,  immediately rises to fill any possible gap and forms new oceanic crust.  When this happens underwater, it is described as seafloor spreading. Huge underwater submarine volcanic ranges are formed from magma coming up from the mantle. Over time these submarine volcanoes may become large enough to reach the surface .eg. Iceland in the North Atlantic Ocean.

Where plates move apart on land, rift valleys are formed. An example of this is the Great African Rift Valley.