water l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Water PowerPoint Presentation
Download Presentation
Water

Loading in 2 Seconds...

play fullscreen
1 / 61

Water - PowerPoint PPT Presentation


  • 309 Views
  • Uploaded on

Water H 2 O, Sea Water and what it means to life in the ocean…. Figure 3.01 Hydrogen Bonds, Between water molecules Are weak, but IMPORTANT! States of water Water occurs as solid, liquid & gas naturally No hydrogen bonds in water vapor

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Water' - bernad


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
water
Water
  • H2O, Sea Water and what it means to life in the ocean….
figure 3 01
Figure 3.01

Hydrogen Bonds,

Between water molecules

Are weak, but

IMPORTANT!

states of water
States of water
  • Water occurs as solid, liquid & gas naturally
  • No hydrogen bonds in water vapor
  • Some molecules joined by hydrogen bonds in liquid – bonds break & reform
  • All molecules rigidly bonded in solid
heat and water
Heat and Water
  • Adding heat makes molecules vibrate
  • Heat energy is used to cause vibration AND to break hydrogen bonds
heat and water6
Heat and Water
  • Ice melts at relatively high temperatures compared to similar substances
    • (OoC instead of –90oC)
water universal solvent
Water = Universal Solvent
  • Good at dissolving salts (the solutes)
  • Salts exist as separate ions in seawater
seawater
Seawater
  • Salts come from weathering of rock or outgassing from hydrothermal vents
  • Sodium and Chloride account for 85% of the dissolved solids (solutes) in sea water.
  • This makes it various degrees of SALINE: “total amount of salt dissolved in sea water”
seawater11
SeaWater
  • WHERE does the “salt” come from?
  • And WHAT else is in the water?
salinity
Salinity
  • The total amount of dissolved salts in seawater
  • Measured in parts per thousand (ppt or o/oo)
  • Average salinity of sea water is 35%
density of sea water
Density of (sea)water
  • Density also affects the salinity of water
  • Liquid water gets denser as the temperature decreases
  • BUT ice is LESS dense than liquid water
  • Increases with decreasing temperature
  • Increases with increasing salinity
slide17

Temp. of ocean surface: cold = blue, warm = red

Typical Ocean temp. range are 28-86 degrees F

stratified ocean 3 layers
Stratified Ocean (3 Layers)
  • Salinity, Temperature and Density all effect ocean waters giving OCEAN GRADIENTS or stratified layers.
  • Dense, cold water @ bottom
  • Less dense, warmer water @ surface (floating on layer below)
3 layered ocean
3 layered Ocean
  • Surface “mixed” layer: 100-200 m thick
  • Mid “intermediate” layer: 200-1500 m thick contains the main thermocline (transition zone between warm and cold top/bottom layers)
  • Deep “bottom” layer: after 1500 m
light in the ocean
Light in the ocean
  • Transparency depends on what is suspended in the water
  • Different colors penetrate to different depths
pressure
Pressure
  • Water is heavier than air
  • Pressure changes ( a lot!) w/ increased water depth
  • 1 atm. of pressure = sea level (on land) but in ocean each 10 m of depth (33’) you add another atm. of pressure
water salinity light pressure depth
Water, salinity, light, pressure, depth
  • How does this affect marine “life?”
life in the ocean
Life in the Ocean
  • Deal with challenges that are unique to marine environment
  • Must maintain suitable conditions inside the organism’s body
figure 4 13a
Figure 4.13a

More salt in cell,

Water diffuses in

to cell, it will swell

and burst.

figure 4 13c
Figure 4.13c

More salt outside cell,

Water moves out

of cell, it will shrivel.

figure 3 14
Figure 3.14

Groupers swim bladder has expanded, due to pressure, thus stomach has

Been forced through mouth!

buoyancy
Buoyancy

Two deep-sea fishes on the deck of a ship after being hauled up from a depth of 800 m. Both fishes were seriously damaged and distorted by the rapid expansion of gases in their swim bladders as they were brought to the surface.

buoyancy41
Buoyancy

Fnft: A physoclistous swim bladder and associated blood vessels.

temperature
Temperature
  • How does this effect marine organisms?
  • It dictates where they live and metabolize
temperature regulation
Temperature Regulation
  • Most marine animals are ectotherms (“cold-blooded”)
temperature regulation45
Temperature Regulation
  • Most marine animals are ectotherms (“cold-blooded”)
  • Mammals and birds are endotherms
    • Use fat, feathers for insulation
temperature46
Temperature
  • Most marine animals are adapted to living at a specific temperature
    • Temperature determines species ranges
new topic
New Topic
  • Tides…
tides
Tides
  • Tides
  • Tide Tables
  • Waves
  • Weather (resultant)
tides53
Tides
  • How do we calculate tides?
  • Tide tables
  • Semidiurnal Tides (in Northeast)
  • Spring vs. Neap tides
tides59
Tides…
  • …effect marine life too…
low tide and offshore
Low Tide…and offshore

Thailand, Tsunami