NASA Logo - National Aeronautics and Space Administration NASA Mid Header Graphic - NASA Langley Reseach Center
SCOOL Banner - Return To Landing Page
Message of The Month:


Our comprehensive glossary is available to assist in your understanding of the S'COOL lesson plan vocabulary words. Please select the first letter of the word you wish to check for a definition and further information.

A  |  B |  C  |  D |  E  |  F |  G  |  H |  I  |  J |  K  |  L |  M  |  N |  O  |  P |  Q  |  R |  S  |  T |  U  |  V |  W  |  X |  Y  |  Z

All definitions

Weather word translations
Passive Remote Sensing:
This is the traditional way to do remote sensing. A sensor simply collects whatever energy reaches it..  
a straight line that is 90 degrees to another straight line.   Image of Perpendicular line
Persistent Non-Spreading Contrails:
A thin contrail that remains in the sky after the plane has disappeared. These contrails are not much wider than the short-lived contrails and are thinner than 1 finger held at arm's length..  
Persistent Spreading Contrails:
A thick contrail that remains in the sky after the plane has disappeared. They are wider than 1 finger held at arma's length. These contrails can grow to resemble natural cirrus clouds..   Persistent Spreading Contrail
This is the relative position that one has in a particular situation.  
Polar Orbits:
Polar-orbiting satellites provide a more global view of Earth, circling at near-polar inclination (the angle between the equatorial plane and the satellite orbital plane -- a true polar orbit has an inclination of 90 degrees). Orbiting at an altitude of 700 to 800 km, these satellites cover best the parts of the world most difficult to cover in situ (on site). For example, McMurdo, Antartica, can be seen on 11-12 of the 14 daily NOAA polar-orbiter passes. These satellites operate in a sun-synchronous orbit. The satellite passes the equator and each latitude at the same local solar time each day, meaning the satellite passes overhead at essentially the same solar time throughout all seasons of the year. This feature enables regular data collection at consistent times as well as long-term comparisons. The orbital plane of a sun-synchronous orbit must also rotate approximately one degree per day to keep pace with the Earth's surface..   For more information on orbits.
The contamination of an environment by human-waste, rendering it undesirable.  
Water that falls from clouds to the ground. This can be in the form of rain, snow, sleet, hail, etc.   More info from the Global Precipitation Measurement mission Picture of thunderstorm with heavy rain
a statement about the occurrence of future events.  
a short memorable and profound statement that is widely believed to be true.