As of April 1st, 2020, the official URL for accessing this website will change to https://gpm.nasa.gov/education. The legacy URL at https://pmm.nasa.gov/education will only continue to work for a limited time. Please update your records accordingly.

Browse ocean Resources

Browse ocean Resources

The Thermohaline Circulation - The Great Ocean Conveyor Belt
Primary Topic: 
Type: 
Audience: 
Standards: 
Summary: 
The oceans are mostly composed of warm salty water near the surface over cold, less salty water in the ocean depths. These two regions don't mix except in certain special areas, which creates a large slow current called the thermohaline circulation.
The Water Cycle: Watering the Land
Primary Topic: 
Type: 
Audience: 
Standards: 
Summary: 
Explore how water droplets form and fall from the sky in part three of the water cycle series. Watch how water vapor moves through the atmosphere and returns to Earth as rain and snow.
The Water Cycle: Steaming the Air
Primary Topic: 
Type: 
Audience: 
Standards: 
Summary: 
Explore water vapor in the air in part two of the water cycle series. This second part of our series on the water cycle illustrates the way in which evaporation and winds combine to move water from the ocean to the land.