Science CH 6

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Author:
Rayna
ID:
291844
Filename:
Science CH 6
Updated:
2015-01-05 14:13:03
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Science
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Science
Description:
Science CH 6, Abeka Grade 8
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  1. Two factors that determine the density of seawater?
    • 1. temperature
    • 2. salinity
  2. Term for huge chunk of floating glacial ice?
    icebergs
  3. Term for outer edge of glacier floating on the ocean?
    ice shelf
  4. Is sea ice salty?
    NO
  5. Tern for pressure caused from water?
    hydrostatic pressure
  6. Term for where cold, deep water meets the sun-warmed surface water?
    thermocline
  7. Term for 78% of the salt in the ocean?
    sodium chloride
  8. Term for amount of dissolved solids in seawater?
    salinity
  9. Study of the earth's oceans?
    oceanography
  10. Name of units used to measure water pressure?
    psi = pounds per square inch
  11. Strong current formed as a wave retreats through a gap in a sandbar?
    rip current
  12. Upward-flowing current?
    upwelling
  13. Gentle current from receding waves?
    undertow
  14. Current that flows in the direction opposite the main current?
    countercurrent
  15. What does scuba stand for?
    self-contained underwater breathing apparatus
  16. Highest point of a wave?
    crest
  17. Term for daily or twice-daily period when the ocean levels are at their highest point?
    high tide
  18. The earth's rotationĀ causes surface currents to move in circular paths called?
    gyres
  19. Movement of ocean water caused primarily by the moon?
    tides
  20. Gentle, rolling waves that appear even in calm weather?
    ocean swells
  21. Wave with white foamy top due to strong winds?
    whitecap
  22. Length of time between one crest and the next?
    period
  23. Wave with white crest due to shallow water?
    breaker
  24. The depression in the water between crests?
    trough
  25. Giant wave, usually caused by and undersea earthquake?
    tsunami
  26. NameĀ for underwater mountain range?
    mid-ocean ridge
  27. Term for huge valley where the crust appears to by separating?
    rift
  28. Term for circular, coral-reef island?
    atoll
  29. Term for underwater mountain?
    seamount
  30. Term for huge muddy valey that cuts through the abyssal plain?
    trench
  31. Term for huge level deep ocean floor?
    abyssal plain
  32. Underwater mountain chain that stretches down the middle of the Atlantic Ocean?
    Mid-Atlantic Ridge
  33. The gently sloped region that stretches away from the continental slope?
    continental rise
  34. Deep depression that contains the ocean?
    ocean basins
  35. The deepest known point in the sea?
    Marianas Trench (Challenger Deep)
  36. Sandy, gently sloping underwater plain near a continent?
    continental shelf
  37. Beginning marked by shelf break?
    continental slope
  38. A pool of shallow, salty water at the center of an atoll?
    lagoon
  39. Large fissure in the continental shelf?
    submarine canyon
  40. Rhythmic back-and-forth motions of water that transfer energy?
    waves
  41. What kind of bottles do oceanographers collect water samples from the ocean depths in?
    Niskin bottles
  42. The revolutionary submersible design invented by Auguste Piccard?
    bathyscaphe
  43. Device with an open tube that is dropped to the sea floor, allowing its weight to puncture the sediment?
    gravity corer
  44. Name of the zone of the deepest regions of the sea, with depths greater than 6000 meters?
    hadal zone
  45. Name of tides halfway between the spring tides are weaker-than-normal tides?
    neap tides
  46. What device uses sound waves to detect underwater objects?
    sonar
  47. What device serves as a framework for many water collection bottles, allowing oceanographers to collect water from different depths?
    rosette

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