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Island Physics

SEAWATER 

Home >> Oceanography >> Seawater >> Drinking Seawater?

2.5 - How to Drink Seawater?

Objectives:
  • Understand why you cannot successfully drink seawater.
  • Know the two methods to extract freshwater from seawater - distillation and reverse osmosis.
Picture
According to Coleridge, the Ancient Mariner was frustrated by being surrounded by water that he could not drink.   The moral of the story being, of course, don't go shooting at wandering albatrosses.  When crossing the ocean in a sailing yacht, we were advised that we could wash in fresh water as long as we were prepared to drink salt water.  Fresh water is a precious resource. 

We cannot survive for long without it.  This means that the ocean is a wilderness that is inhospitable to humans.  Fish and turtles don't seem to have the same problem though.  ​
How Stuff Works - What Happens If You Drink Seawater
Questions to ponder:
Why exactly do we need to drink fresh water?

What happens if we try to drink seawater when we are thirsty?

How does Bermuda meet its demands for fresh water?
Activities:
  • Distill seawater to produce fresh water
  • Tour of the Tyne's Bay Reverse Osmosis Plant?
  • Mark Soares to visit and show a RO membrane?

Circulation and Climate >>

Other Resources

  • YEAR 9
    • Inheritance
    • Fitness and Health
    • Plants
    • Metals and Metal Compounds
    • Reactivity Series
    • Chemical Reactions
    • Energy and Electricity
    • Forces and Motion
    • Pressure and Moments
    • Gravity and Space
    • Environmental Science
  • IGCSE
    • Forces and Motion
    • Energy and Energy Resources
    • Solids, Liquids and Gases
    • Waves
    • Astrophysics
    • Electricity
    • Magnetism
    • Nuclear Physics
    • IGCSE revision
  • Physics I
    • Kinematics >
      • Variables and Units
      • Describing Motion
      • Equations of Motion
      • Problem Solving
      • Projectiles
      • Kinematics Animations
    • Newtons Laws >
      • Forces
      • Static Equilibrium
      • Dynamics
      • Friction
      • Advanced Problems
    • Gravitation and Orbits >
      • Circular Motion
      • Vertical Circles
      • Universal Gravitation
      • Orbits
      • Circular Motion Animation
    • Energy >
      • Work
      • Springs
      • PE and KE
      • Conservation of Energy
      • Work-Energy Theorem
    • Linear Momentum >
      • Impulse
      • Conservation of Momentum
      • Types of Collision
      • 2-D Collisions
    • Simple Harmonic Motion >
      • Mass on Spring
      • Pendulums
      • SHM Animations
    • Rotational Mechanics >
      • Torque
      • Rotational Kinematics
      • Rotational Dynamics
      • Angular Momentum
      • Rotational Energy
    • Coulombs Law
    • DC Circuits >
      • Voltage and Current
      • Resistance
      • Series and Parallel
      • Internal Resistance
    • Mechanical Waves >
      • Waves on a String
      • Sound
    • AP-1 Revision
    • AP Physics C (Mechanics)
  • Physics II
    • Fluid Mechanics
    • Thermal Physics
    • Electrostatics
    • Magnetic Fields >
      • EM Induction
    • Interference and Diffraction
    • Optics
    • Modern Physics
  • OCEANOGRAPHY
    • The World Ocean >
      • What is Oceanography
      • History
      • Lat and Long
      • Size and Origin
      • Plate Tectonics
    • Seawater >
      • A Salty Sea
      • Measuring Salinity
      • Thermal Properties
      • Density Profiles
      • Drinking Seawater
    • Circulation and Climate >
      • Global Heating
      • Coriolis Effect
      • Surface Currents
      • Vertical Motion
      • Thermohaline Circulation
      • El Nino
      • Carbon Cycle
    • Waves and Tides >
      • Wave Motion
      • Formation of Waves
      • Beaches
      • Tsunamis
      • Tides
    • Observation Systems >
      • Challenges
      • The CTD
      • Moorings
      • Sound Waves
      • Robotics
      • Satellites
    • Weather and Navigation >
      • Weather Systems
      • Weather Forecasting
      • Hurricanes
      • Navigation
      • Life at Sea
    • Oceans and Mankind >
      • Ocean Acidification
      • Pollution
      • Fish Stocks
      • Climate Change
      • Energy Resources
    • Atlantic Explorer Cruise
    • ROVs
  • ASTRONOMY
    • Celestial Sphere
    • Telescopes
    • The Sun
    • The Moon
    • The Planets
    • The Universe
  • COLLEGE
    • College Physics I
    • College Physics II
  • CONTACT