Understanding Ocean Tides and Currents

1) What causes the ocean's tides?

• Wind moving across the surface of the water

• Energy from the Sun's rays

• Gravitational pull of the Sun and Moon, and the rotation of the Earth

• All of the above

What do we call the flow of water as the tide rises or falls?

• Tidal current

• Tidal river

• Tidal stream

• Tidal wave

What do we call a high tide that occurs on the opposite side of the Earth from the Moon?

• Semi-diurnal

• Antipodal

• Sublunar

• Neap tide

What type of tide cycle occurs twice a day?

• High

• Low

• Neap tide

• Semidiurnal

What type of tide cycle occurs twice a day?

• High

• Low

• Neap tide

• Semidiurnal

What type of tide occurs when the sea level is at its lowest?

• High

• Low

• Slack water

• Neap tide

What is the tidal range?

• 
  The time it takes for a low tide to become a high tide

• The time between high tides

• The rate at which the tide changes

• The difference in sea level between the low tide and high tide

What is a diurnal tide cycle?

• A tide cycle that occurs twice a day

• A tide cycle that occurs once a month

• A tide cycle that occurs three times a day

• A tide cycle that occurs once a day

What type of tide occurs when the tidal range is at its smallest?

• High

• Low

• Spring

• Neap tide

What tidal current occurs when the tide is moving away from the ocean and towards the shore?

• Flood current

• Ebb current

• Slack water

• None of the Above