IA #4 Review

In some areas of the world, like California and Japan, earthquakes are a common occurrence. How can this best be explained?

• The strong ocean currents are undermining both areas causing earthquakes.

• Both areas are located near the edge of the Pacific Ocean, the unstable sand causes earthquakes.

• Both areas are subjected to strong ocean wind and waves that causes earthquakes.

• Both areas are on the boundary of active plates, the motion of the plates causes earthquakes.

___________ currents in the Earth's asthenosphere cause plate to shift at their boundaries. This movement also causes earthquakes and volcanic activity.

• conduction

• convection

• radiation

• ocean

In sea-floor spreading, molten material rises from the mantle and erupts

• along the edges of all the continents.

• along mid-ocean ridges.

• in deep-ocean trenches.

• at the north and south poles.

Mountains form from ...

• plates sliding past one another
• collision of plates
• plates moving away from each other

What is the motion of Earth's plates like?

• fast and in stages

• slow and in stages

• fast and constant

• slow and constant

Name the boundary

• convergent boundary
• divergent boundary
• transform boundary
• sergent boundary

What evidence was NOT used by Wegener as proof of continental drift?

• land features

• erosion

• climate

• fossils

What type of landform is at C?

• mid-ocean ridge

• continental crust

• deep ocean trench

• sea floor spread

Identify the landform labeled A

• mid-ocean ridge

• deep ocean trench

• sea floor spread

What is the elevation of Y?

• Between 120-140 meters
• Between 100-120 meters
• Between 140-160 meters
• Between 80-100 meters