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Words begining with "J"
Japanese National Space Development Agency (NASDA)
The agency reports to the Japanese Ministry of Science and
Technoloqy.
JPL (Jet Propulsion Laboratory)
See NASA Centers.
Jet Stream
Rivers of high-speed air in the atmosphere. Jet streams form along
the boundaries of global air masses where there is a significant
difference in atmospheric temperature. The jet streams may be several
hundred miles across and 1 - 2 miles deep at an altitude of 8 - 12
miles. They generally move west to east, and are strongest in the
winter with core wind speeds as high as 250 mph. Changes in the jet
stream indicate changes in the motion of the atmosphere and weather.
Joint Education Initiative (JEI)
The JEI project was developed by USGS,
NOAA, NASA, industry, and teachers to enable teachers and students to
explore the massive quantities of Earth science data published by the
U.S. Government on CD-ROM. JEI encourages a research and analysis
approach to science education.
JSC (Johnson Space Center)
See NASA Centers.
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