Ocean Exploration

Question 1

HMS Challenger

Answer 1

Tied a wire to a weight and dropped it overboard, reached the bottom and pulled it up and measured the length of the wet wire

Question 2

Sonar

Answer 2

(SOund Navigation And Ranging) Sends sound waves to the ocean floor and they bounce back up, deeper the water, longer the round trip

Question 3

Seasat

Answer 3

(Satellite) focused on the ocean, send images back to Earth, allowed scientists to measure the direction and speed of ocean currents

Question 4

Geosat

Answer 4

(Once a top-secret military satellite) measured slight changes in the height of the oceans surface

Question 5

Alvin

Answer 5

Can reach some of the deepest parts of the ocean, searched for sunken ships and lost hydrogen bombs (piloted)

Question 6

Deep Flight

Answer 6

Underwater airplane, explored deep ocean, moves like an airplane (piloted)

Question 7

Jason II

Answer 7

(robotic) flown by pilot at the surface, explores ocean floor

Question 8

Medea

Answer 8

attached to Jason II and explores above the sea floor