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Ch 11 and 12 science
na
11
Science
8th Grade
06/04/2009

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Cards

Term
organic compound
Definition
a covalently bonded compound that contains carbon
Term
carbohydrate
Definition
a class of energy giving nutrients that includes sugars, starches, and fiber contains carbon, hydrogen and oxygen
Term
lipid
Definition
a fat molecule or a molecule that has similar properties; examples include oils, waxes, and steroids
Term
protein
Definition
a molecule that is made up of amino acids and that is needed to build and repair body structures and to regulate processes
Term
nucleic acid
Definition
molecule made up of subunits called nucleotides
Term
motion
Definition
an objects change in position relative to a eference point
Term
average speed
Definition
the total distance traveled divided by the total time taken
Term
velocity
Definition
the speed of an object in a particular direction
Term
acceleration
Definition
the rate at which velocity changes over time an object accelerates if its speed, direction, or both change
Term
net force
Definition
the combination of all of the force acting on a object
Term
friction
Definition
a force that opposes motion between two surfaces that are in contract
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