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GLOSSARY


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.


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All definitions


Weather word translations
D
data:
a collection of information that can be used to support a scientific process. Different types of data include quantitative and qualitative data.   example of data types
D
database:
a type of computer program used for consolidating and organizing a collection of data for quick access and use in many different ways.  
D
degree:
a standard unit of measure for several purposes to include temperature on a scale such as Celsius, Fahrenheit or Kelvin, latitude or longitude to locate or designate places on Earth, and planar angles equal to a 360th of a circle.   Fahrenheit, Celsius and Kelvin temperature scales
Image courtesy NASAexplores
D
descend:
the process of moving from a higher to a lower location. A climber is descending down a mountain when he or she is going from the top to the bottom.  
D
dew:
tiny water drops that form when water vapor condenses onto an object (ground, grass, etc.).   Dew on some leaves
D
dew point:
the temperature to which an air mass must be cooled in order for the air mass to become saturated (relative humidity equals 100 percent), assuming constant pressure and moisture content. Additional moisture would condense into water droplets.  
D
diameter:
a line that goes across the center point of a circle and whose endpoints lie on the perimeter of the circle.  
D
dichotomous key:
a written list or series of steps that will eventually lead you to the positive identification of an object, e.g. species of animal or cloud type.   Dichotomous key example
D
direct observation:
This is when scientists themselves make notes and observations about a particular object. As opposed to relying on someone elses data to draw conclusions.  
D
download:
a process by which information is transferred from one computer to another.  
D
droplets:
collection of separate small amounts of liquid.  
D
dust storm:
a situation in which the wind speed is high enough to remove particles of unconsolidated material and put it into the air in quantities that decrease visibility. This is most common in areas with a low humidity throughout the year.   Phoenix dust storm