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Best friends are like diamonds, precious and rare.
False friends are like leaves, found everywhere. |
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Wednesday, May 13, 2009, 10:56 PM
SELF-REFERENCESI unit: Length - m Mass- kg time- s electric current- a temperature- k amount of substance- mol Regular volume: cube - volume = length^3 rectangular block- volume = length x width x height sphere- volume = 4/3(pie)r^3 cylinder- volume = (pie)r^2h Melting: -A process in which a substance changes it state from solid to liquid. Freezing: -A process in which a substance changes its state from liquid to solid. Boiling: -A process in which a substance changes its state from the liquid state to the gaseous state. Condensation: -A process in which a substance changes fom gaseous state to liquid state. Boiling: -Liquid to gas -Quick -Bubbles are bored -Occurs throughout liquid -Occurs @ a constant temperature -Source of energy is needed Evaporation- -Water changes into vapour w/o boiling -Slow -No bubbles were formed -Takes place only from the exposed surface of the liquid -Occurs @ all temperatures -Enerygy supplied by surrounding Laws of reflection: -angle of incidence = angle of reflection Transverse waves: -Up and down Longitudinal waves: -Left to right |
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