What are waves and tides

Waves

# Waves are nothing but the oscillatory movements that result in the rise and fall of water surface.
# Waves are a kind of horizontal movements of the ocean water.
# They are actually the energy, not the water as such, which moves across the ocean surface.
# This energy for the waves is provided by the wind.
# In a wave, the movement of each water particle is in a circular manner.
# A wave has two major parts: the raised part is called as the crest while the low-point is called as the trough.

Tides

# Tide are the periodical rise and fall of the sea levels, once or twice a day, caused by the combined effects of the gravitational forces exerted by the sun, the moon and the rotation of the earth.
# They are a vertical movement of waters and are different from movements of ocean water caused by meteorological effects like the winds and atmospheric pressure changes.
# Note: The water movements which are caused by the meteorological effects like the said above are called as surges and they are not regular like tides.
# The moon’s gravitational pull to a great extent is the major cause of the occurrence of tides (the moon’s gravitational attraction is more effective on the earth than that of the sun).
# Sun’s gravitational pull and the centrifugal force due to the rotation of earth are the other forces which act along with the moon’s gravitational pull.
# The highest tides in the world occur in the Bay of Fundi in Canada.
# When the tide is channeled between islands or into bays and estuaries, they are termed as Tidal Currents.
# The regular interval between two high or two low tides is 12 hours 25 minutes.