NASA Sees Tides Under Ocean’s Surface

The video explains how the moon's gravitational pull generates tides, including internal tides, which are crucial for oceanic and atmospheric processes. Internal tides, formed by underwater topography like the Hawaiian Ridge, move heat into the ocean's interior, potentially mitigating global warming. Despite their small surface appearance, they play a significant role in climate regulation and are studied using satellite data.

What is one of the effects of the moon's gravitational pull on Earth?

• It creates long-period waves in the ocean.

• It increases the Earth's rotation speed.

• It causes volcanic eruptions.

• It decreases the amount of sunlight reaching Earth.

How do internal tides form around the Hawaiian Ridge?

• By the interaction of tidal currents with underwater mountains.

• By the evaporation of seawater.

• By the direct heating of the ocean surface.

• By the melting of polar ice caps.

What is a characteristic of internal tides as they move away from their source?

• They dissipate immediately after formation.

• They only move in a northward direction.

• They remain stationary near the coastlines.

• They can travel thousands of miles under the ocean surface.

What role do internal tides play in oceanography?

• They increase the salinity of ocean water.

• They are responsible for oceanic earthquakes.

• They help map and study larger internal water motions.

• They are used to predict weather patterns.

How do internal tides impact Earth's climate?

• By transferring heat from the atmosphere to the ocean interior.

• By increasing the Earth's average temperature.

• By causing more frequent hurricanes.

• By reducing the amount of carbon dioxide in the atmosphere.