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science- sem 1
finals
14
Science
9th Grade
01/14/2010

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Cards

Term
observation
Definition
a record of what you see
Term
Direct observation
Definition
made with five senses
Term
indirect observation
Definition
made with instruments
Term
Hypothesis
Definition
a prediction that can be tested
Term
theory
Definition
a well-tested explanation of something that occurs based on extensive empirical evidence.
Term
Heat
Definition
transfer of energy
Term
Heat
Definition
transfer of energy of electromagnetic waves.
Term
wavelength
Definition
distance from crest to crest, of the energy determines how we perceive that energy.
Term
wavelength and frquency
Definition
inversly proportional, that is the wayy to say the shorter wavelength the higher frequncy and the longer the wavelenght the lower the frequency
Term
Heat movement
Definition
always moves from warmer objects to cooler objects until they reach equilibrium
Term
tempurature
Definition
the measurement of the average speed of the molecules within a substance
Term
Conduction
Definition
transfer of energy to a substance by direct contact of the molecules.
Term
Convection
Definition
transfer of energy through substances due to density changes within a substance.
Term
Radiation
Definition
the transfer of heat through waves
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