Nick and Oliver


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Nick and Oliver

  1. 1. Our IALT and IASW IALT: Explain the phenomenon of tides (why they occur) and identify the different types of tides IASW: I can… Create a PowerPoint explaining why tides happen and give a brief explanation of each type of tide (in my own words). Create a visual diagram showing what the earth looks like during high an d low tide.
  2. 2. Tides are the periodic rise and fall of the ocean waters. They are caused by the gravitational pulls of the Moon and Sun, as well as the rotation of the Earth. Winds and currents move the surface water causing waves. tides are most likely caused by the gravitational pull and shifting of the moon causing all oceans, creeks, lakes, to form tides and pull the water back and forth.
  3. 3. A Neap Tide is between a high tide and low tide. During the moon's quarter phases the sun and moon work at right angles, causing the bulges to cancel each other. The result is a smaller difference between high and low tides and is known as a neap tide. Neap tides are especially weak tides.
  4. 4. When the moon is full or new, the gravitational pull of the moon and sun are combined. At these times, the high tides are very high and the low tides are very low. This is known as a spring high tide. Spring tides are especially strong tides (they do not have anything to do with the season Spring). They occur when the Earth, the Sun, and the Moon are in a line. The gravitational forces of the Moon and the Sun both contribute to the tides. Spring tides occur during the full moon and the new moon. Spring tides are higher than normal tides.
  5. 5. The high and low tide are caused by the gravitational pulls between the earth and the moon. However, the source of the real effect takes some explaining to understand. The incorrect way of thinking is that the moon attracts all the water to itself, therefore causing a high tide on the side of earth close to the moon, and a low tide on the side far from the moon. However, if this was the case, there would be a high tide once per day. But there are TWO high tides a day. The reason is, the part of the earth both AWAY from the moon, and CLOSE to the moon BOTH get high tides
  6. 6. What words mean  Periodic: occurring or appearing at regular intervals  Gravitational: the force of attraction between any two masses.  Phase: a stage in a process of change  Contribute: to give
  7. 7. Bibliography       18193&CFTOKEN=76797014    
  8. 8. Made By Nick and Oliver Info: found by Oliver and Nick Animations: Oliver and Nick Typing: Nick and Oliver Cool Text: Flaming Text Thanks to the computer in the middle closest to the door ON productions (Oliver and Nick productions)