Water Exploration

What causes ocean currents?

• Moon phases

• Underwater volcanoes

• Tectonic plate movement

• Wind, temperature, salinity, Earth's rotation, and ocean basin shape

Explain the difference between tidal range and tidal currents.

• Tidal range is the speed of water movement during tides, while tidal currents are the temperature difference caused by tides.

• Tidal range is the distance between two tidal stations, while tidal currents are the atmospheric pressure changes due to tides.

• Tidal range is the vertical difference between high tide and low tide, while tidal currents are the horizontal flow of water due to tides.

• Tidal range is the horizontal flow of water due to tides, while tidal currents are the vertical difference between high tide and low tide.

How does salinity affect the density of water?

• Salinity has no effect on the density of water.

• Salinity decreases the density of water.

• Salinity makes water less dense.

• Salinity increases the density of water.

Describe the Coriolis effect and its impact on ocean currents.

• The Coriolis effect has no impact on ocean currents

• The Coriolis effect causes ocean currents to flow in a straight line

• The Coriolis effect only affects air currents, not ocean currents

• The Coriolis effect causes ocean currents to be deflected to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.

What are the two main factors that influence tides?

• Temperature changes and wind patterns

• Rotation of the Earth and ocean currents

• Magnetic field of the Earth and atmospheric pressure

• Gravitational pull of the moon and the sun

How do spring tides differ from neap tides?

• Spring tides have higher high tides and lower low tides, while neap tides have lower high tides and higher low tides.

• Spring tides occur during the neap tide phase

• Neap tides have higher high tides and lower low tides

• Spring tides have lower high tides and lower low tides

What is the average salinity of seawater?

• 3.5% or 35 ppt

• 4% or 40 ppt

• 2.5% or 25 ppt

• 5% or 50 ppt

Explain the concept of thermohaline circulation.

• Thermohaline circulation is a global oceanic circulation driven by differences in temperature and salinity.

• Thermohaline circulation is a result of volcanic activity in the ocean.

• Thermohaline circulation is solely influenced by the moon's gravitational pull.

• Thermohaline circulation is driven by wind patterns only.

How do surface currents differ from deep ocean currents?

• Surface currents flow in the opposite direction of deep ocean currents.

• Surface currents are driven by wind near the ocean's surface, while deep ocean currents are driven by density differences deep below the surface.

• Surface currents are warmer than deep ocean currents due to proximity to the equator.

• Surface currents are driven by the moon's gravitational pull, while deep ocean currents are driven by the sun's heat.

What role does the moon play in the formation of tides?

• The moon's gravitational pull causes the formation of tides.

• The moon's color affects the tides.

• The moon's size determines the tides.

• Tides are caused by the moon's rotation.