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Science
California Science
Grade 5
e-Glossary
D
List of Words for Letter āDā
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dam
a barrier that prevents or restricts the normal flow of water
density
a measure of how tightly matter is packed in a given amount of space
desalination
to remove salt from a substance
dialysis
a medical treatment that carries out the same processes as the human kidney
diaphragm
a flat muscle that controls breathing
diffusion
the movement of particles from areas with high concentrations to areas with low concentration
digestion
the process by which food is broken down into usable substances
digestive system
the organ system that breaks down food into nutrients that cells need
disperse
to scatter or spread
draw conclusions
to arrive at possible answers on information you have gathered
drought
a long period of dry weather
ductile
capable of being drawn out into wire or thread