Unit 2: Tools of Oceanography

Question 1

Bathysphere

Answer 1

Steel ball with a window connected to the boat by an umbilical

Question 2

Bathyscaphe

Answer 2

Sphere attached to a large float instead of a cable and ship with a small electric motor (operates like a blimp)

Question 3

Chronometer

Answer 3

Clock or watch that is not affected by the waves or motion of the sea

Question 4

Echo sounding

Answer 4

Beams of sound waves bounced off the ocean bottom to map the sea floor

Question 5

Gps

Answer 5

Uses satellites to determine and display location within three to six meters of accuracy

Question 6

Hardsuits

Answer 6

Wearable submersibles

Question 7

LORAN-C

Answer 7

Location system was based on transmitted radio signals and was accurate within a few meters

Question 8

Multibeam bathymetry

Answer 8

Many beams of sound are simultaneously used to map much larger area of the sea floor during a single cruise.

Question 9

ROV

Answer 9

Small unmanned submarines with propellers, a video camera, and an umbilical to the surface

Question 10

Sea-net

Answer 10

Communication developed in 1995 to extend the Internet to ships at sea

Question 11

Satellites

Answer 11

Objects that orbit the earth and provide continuous measurements of sea-surface height, temperature, color, pollutions, etc.

Question 12

Scuba

Answer 12

Lightweight self contained system for underwater exploration

Question 13

AUV

Answer 13

Untethered robotic devices that are controlled by onboard computers