Oceanography 1

Mid-Ocean Ridges form through the process of what?

• Erosion

• Seafloor Spreading

• Volcanic Eruption

• Earthquakes

Seawater is typically denser than freshwater due to seawater’s —

• Greater depth
• Lower freezing point
• Smaller mass
• Higher salinity

What causes surface waves?

• underwater volcanoes
• earthquakes
• wind
• landslides

Deep ocean currents are caused by -

• density difference

• global wind patterns

• Sun-Moon-Earth interactions

• underwater earthquakes

Which of the following statements about upwelling is incorrect?

• Upwelling is when cold water rises toward the surface.

• Upwelling occurs because the wind pushes away surface water.

• Water that rises to the surface is too warm and harms local marine life.

• Water that rises to the surface during upwelling is usually rich in nutrients.

Which ocean floor feature is the relatively smooth portion of the ocean floor?

• Mid-Ocean Ridge

• Ocean Trench

• Rift Valley

• Abyssal Plain

Where does Upwelling occur?

• In deep ocean trenches

• In shallow gulfs

• In open ocean water

• Along a coastline

What is the most common way the continental shelf grows in size?

• Deposition of continental sediment

• Evaporation from ocean water

• Eruption of continental volcanoes creating new crust

• Subduction of oceanic crust under continental crust

Which ocean floor feature is associated with convergent plate boundaries?

• Mid Ocean Ridges

• Trenches

• Abyssal Plains

• Continental shelf

Which ocean floor feature is associated with divergent plates?

• Mid Ocean Ridges

• Trenches

• Abyssal Plains

• Continental Shelf