Chapt 6 Explore the Sea Floor

What is the average depth of the ocean?

• a. 1,500 meters

• b. 3,682 meters

• c. 5,000 meters

• d. 11,000 meters

Which of the following features is formed by the movement of Earth's lithospheric plates?

• a. Coral reefs

• b. Ocean currents

• c. Mid-ocean ridges

• d. Tidal pools

Tags

NGSS.MS-ESS2-3

What technology uses sound waves to measure ocean depth?

• a. Radar

• b. Sonar

• c. Lidar

• d. Satellite imaging

Tags

NGSS.MS-PS4-2

What is the deepest part of the ocean known as?

• a. Mariana Trench

• b. Mid-ocean Ridge

• c. Abyssal Plain

• d. Continental Shelf

Which of the following is NOT a type of seafloor sediment?

• a. Terrigenous

• b. Biogenous

• c. Hydrogenous

• d. Lithogenous

Which seafloor feature is characterized by a gently sloping land area along the edges of continents?

• a. Continental Shelf

• b. Abyssal Plain

• c. Mid-ocean Ridge

• d. Trench

Tags

NGSS.MS-ESS2-3

Echolocation is primarily used by which type of animal?

• a. Fish

• b. Birds

• c. Toothed whales

• d. Sea turtles

How do scientists map the ocean floor using satellites?

• a. By measuring the temperature of the water

• b. By observing the surface of the water

• c. By tracking sea level changes

• d. By analyzing gravity variations

Which oceanographic tool is used for side-scan imaging of the seafloor?

• a. Multibeam sonar

• b. Sonar towfish

• c. ROV (Remotely Operated Vehicle)

• d. Acoustic Doppler Current Profiler

Tags

NGSS.MS-ESS2-3

What is the primary source of biogenous sediment?

• a. Volcanic ash

• b. Eroded land particles

• c. Marine organism shells

• d. Chemical precipitates