Ch2 L1 Exploring the Ocean Quiz

What is salinity?

• The total amount of dissolved salt in a sample of water

• The temperature of the ocean water

• The force exerted by the weight of water

• The depth of the ocean

Which zone in the water column has the highest density?

• Surface zone

• Transition zone

• Deep zone

• All zones have the same density

What happens to the water temperature as you descend through the ocean?

• It increases

• It stays the same

• It fluctuates

• It decreases

What is the relationship between depth and water pressure in the ocean?

• Pressure decreases with depth

• Pressure increases with depth

• Pressure remains constant at all depths

• Pressure is unrelated to depth

What technology is used to map the ocean floor?

• Sonar

• Radar

• Satellite imagery

• Underwater cameras

How does sonar work?

• It uses sound waves to calculate the distance to an object

• It uses radio waves to calculate the distance to an object

• It uses light waves to calculate the distance to an object

• It uses magnetic waves to calculate the distance to an object

What is a seamount?

• A gently sloping shallow area that extends outward from the edge of each continent

• A long, deep valley on the ocean floor through which the old ocean floor sinks back toward the mantle

• A volcanic mountain rising from the ocean floor

• A broad area covered with thick layers of mud and silt

What are mid-ocean ridges?

• Long chains of mountains on the ocean floor

• Gently sloping shallow areas that extend outward from the edge of each continent

• Volcanic mountains rising from the ocean floor

• Broad areas covered with thick layers of mud and silt

What is the continental shelf?

• A gently sloping shallow area that extends outward from the edge of each continent

• A long, deep valley on the ocean floor through which the old ocean floor sinks back toward the mantle

• A volcanic mountain rising from the ocean floor

• A broad area covered with thick layers of mud and silt

What is the continental slope?

• A gently sloping shallow area that extends outward from the edge of each continent

• A long, deep valley on the ocean floor through which the old ocean floor sinks back toward the mantle

• A volcanic mountain rising from the ocean floor

• A steep edge of the continental shelf