WAVES AND TIDES

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WAVES AND TIDES

• By Austin

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How waves are made

• Some waves are generated by storms others are
  generated by friction with wind across the water
  surface.

• Wave size depends on how fast the wind blows the
  time the wind blows and the
• length of water over which it blows.

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HOW TIDES ARE MADE

• Tides are the rising and falling of waves.

• Tides are caused by the gravitational pull of the
  moon and sun.

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FACTS ABOUT WAVES

• Shorelines are the only contact waves have to
  land.
• Waves cause erosion and deposition along most
  coast lines.
• Waves slow down because of friction with the
  ocean bottom.
• As the wave feels the bottom its height increases
  and its length decreases.
• Waves often strike beaches at a slight angle

• When waves approach the shore they have a
  tendency to bend or refract.
• Surging breakers are small ripple waves that land
  on the shore.
• Wave forms move horizontally as energy is
  transferred.

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facts about tides

• Tidal interval is the difference between high
  tide and low tide.
• Each tide will happen twice a day. Tidal range is
  the vertical difference between high tide and low
  tide.

• Spring tides occur when the Earth, the Sun, and
  the Moon are in a line. They occur during a full
  moon and the new moon.
• Neap tides occur when gravitational forces of the
  moon and the Sun are perpendicular to one
  another.
• A flood current is the incoming tide and Ebb is
  the outgoing tide.