Ocean Resources Review

SONAR is used to

• identify ocean features

• see in the dark zones of the ocean

• create waves

• help breath under water

Tags

NGSS.MS-PS4-2

SONAR uses sound waves which...

• disperse into the water molecules

• bounce off the waves

• bounce off the ocean floor

• get absorbed by the ocean crust

Tags

NGSS.MS-PS4-2

SONAR equipment is mounted on...

• the bottom of the boat

• the side of a boat

• the deck of a ship

• in front of the boat

Tags

NGSS.MS-PS4-2

How do we use SONAR to map the sea floor?

• the time it takes the sound wave to reach the sea floor tells us how deep the seafloor is

• the time it takes the sound wave to return back as an echo tells us how deep the seafloor is

• the time it takes for the sound wave to be sent out and return to the boat tells us how deep the seafloor is

Tags

NGSS.MS-PS4-2

The boundary of the continent is not the coastline but rather the...

• edge of the continental shelf

• continental slope

• the high tide line

• the edge of the beach

Define Continental Shelf.

• final boundary between the continental crust and oceanic crust

• the break that descends toward the seafloor

• edge of the continent that lies under the ocean

Define Continental Slope.

• final boundary between the continental crust and oceanic crust

• the break that descends toward the seafloor

• edge of the continent that lies under the ocean

Define Continental Rise.

• final boundary between the continental crust and oceanic crust

• the break that descends toward the seafloor

• edge of the continent that lies under the ocean

Define Abyssal Plain.

• deep channels cut through the continental shelf

• underwater plain usually lying between the continental rise and mid-ocean ridge - covers more than 50% of the Earth's surface

Define Submarine Canyons.

• deep channels cut through the continental shelf

• underwater plain usually lying between the continental rise and mid-ocean ridge - covers more than 50% of the Earth's surface