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29 Cards in this Set
- Front
- Back
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What is Physics?
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Physics is the study of matter and energy.
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What is Matter?
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Matter is anything that takes up space and has mass.
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What is weight?
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The pull of gravity on the mass of a body.
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What is energy?
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Energy is the ability to do work.
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What is the Scientific Method?
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The combination of activities in which scientists engage in order ot achieve the understanding they seek.
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What are the 6 steps in the Scientific Method?
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1) Define the problem
2) Observation 3) Make hypothesis 4) Experimentation 5) Conclusion/develop theroy 6) Communication. D.O.M.E.C.C.=Defining observations makes experiments conclusivly clear. |
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What is measurement?
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A comparison of an unkown quantity with a known quantiy that is accepted as a standard.
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Fundamental Quantities
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Fundamental quantities are quantities that cannot be obtained from the combination of any other quantities. They are the basic quantities.
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Mass
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symbol:M
Unit :Kilogram symbol:Kg |
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Length
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symbol:L
Unit :Meter symbol:M |
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Time
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symbol:T
Unit : Second symbol: S |
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Temperature
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symbol:O
Unit :Degree celsius symbol:oC |
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?
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symbol: T
Unit : K symbol: K |
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Electric current
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symbol:I
Unit : Ampere symbol: A |
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What is a derived quanity?
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A quantity that is obtained by the combination of some basic quanitites.
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Area
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A
Square metre M2 |
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Volume
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V
Cubic metre M3 |
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Density
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P
Kilogram/cubic Kg/m-3 |
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Velocity
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v
metre per second MS-1 |
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Acceleration
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a
metre per second Ms-2 |
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Force
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F
Newton N |
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Pressure
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P
Pascal Pa |
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Energy
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E
Joule J |
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Work
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W
Joule J |
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Frequency
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f
Hertz Hz |
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Electric charge
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Q
coulomb C |
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Resistance
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R
Ohm can not put in symbol here..learn on your own. |
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Potenical difference
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V
volt V |
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What is a dimensionless quantity?
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A quantity that has no unit of measurement but is represented by a number only. Eg. relative density.
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