Deep Ocean Technology

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Deep Ocean Technology The Ocean Floor
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IMPORTANT VOCAB

• Continental margin
• Continental shelf
• Continental slope
• Continental rise
• Deep ocean basin
• Abyssal plain
• Mid-ocean ridges
• Rift valley
• Ocean trenches
• Sea mounts

LETS LABEL THE DRAWING WITH THE FOLLOWING
TERMS
PGS 86 -- 87
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Vocabulary words

• The continental shelf is the gently sloping
  section of the continental margin. The depth can
  reach 200 meters.
• The continental slope is steeply inclined section
  between the continental shelf and the ocean
  floor.
• The continental rise is the base of continental
  slope, made of piles of sediment.
• The abyssal plain is the broad, flat part of the
  ocean floor.
• An ocean trench is a deep canyon on the ocean
  floor. They form where one tectonic plate is
  pushed under another.

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Vocabulary continued

• A seamount is a volcanic mountain on the ocean
  floor.
• Guyot is a submarine volcanic mountain with a
  flat top.
• Islands are seamounts that rise above the water
  surface.
• The mid-ocean ridge is a mountain range that runs
  through all the worlds oceans. It is almost
  64,000 kilometers (40,000 miles) long! It forms
  where tectonic plates pull apart. Magma erupts
  through the ocean floor to make new seafloor. The
  magma hardens to create the ridge.
• Rift valley is a long valley formed between the
  two sides of mid-ocean ridges.

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LABEL THE PICTURE WITH THESE PARTS Continental
shelf, Continental slope, Continental rise,
Abyssal plain, Mid-ocean ridge, rift valley,
ocean trenches, and seamounts
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Continental
Continental
Continental rise
Ocean trench
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Pgs 84 85, 88 89

• TASK 1 List the 3 ways that humans study the
  ocean floor?

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Pgs 84 85

• TASK 2 Make a flow map that shows how SONAR
  works.

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HOW DOES SONAR WORK

• Works like bats
• SOUNDWAVE (PING) is sent down, towards bottom of
  ocean
• PING hits land.
• PING bounces back.
• Time it took for PING to hit something and come
  back is recorded.
• Time is converted into a distance.

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Mata Volcano pictures
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Pgs 84 85

• TASK 3 What are the 2 satellites used to study
  the ocean floor and what information do they give?

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SATELLITE

• Satellite images cover more territory than SONAR

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Pgs 88 89

• TASK 4 Explain the differences between piloted
  vessels and robotic vessels.

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UNDERWATER VESSELS

• Piloted vessels are expensive and more dangerous
  for humans in the vessels.
• Robotic vessels are cheaper and safer because
  humans control the vessels from the surface of
  the ocean.

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ALVIN
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TRIESTE