Friday, 18 March 2016

Moon tides

What are lunar tides?

  • tides are created because the earth and the moon are attracted to each other.
  • the moon pulls at anything on earth to bring it closer.
  • the earths holds onto everything (gravity) except water, because the water is always moving. 
  • 2 high tides and two low tides each day - 12 hours 25 minutes approximately between the two high tides 
Different tides 
  • strong gravitational force when the sun and moon are aligned and very low. 
  • causes very high tides which is called a spring tide. 
  • when gravitational force is cancelled out because the sun and moon aren't aligned it causes tides that aren't so high or low, these are called neap tides. 
Neap tides
  • moons are quarter phases and the sun and moon work at right angles causing the bulges to cancel each other out. 
  • smaller high and low tides 
  • neap tides occur during quarter moon phases


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