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GLOSSARY

Our comprehensive earth science glossary is available to assist in your understanding of the MY NASA DATA microsets, lesson plans and computer tools. Please select the first letter of the word you wish to check for a definition and further information.

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All definitions
K
Kelvin:
An absolute temperature scale invented in the 1800's by William Thompson, Lord Kelvin. It places the zero point of the scale at absolute zero, the temperature which scientists believe is the lowest possible. All molecular motion would stop there. A Kelvin degree is the same size as a Celsius degree, so the two scales simply have a constant offset.   Fahrenheit, Celsius and Kelvin temperature scales
Image courtesy NASAexplores
K
kilometer:
A metric unit of distance equivalent to 1,000 meters. One kilometer is a little more than one half of a mile.   The Metric System

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