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29 Cards in this Set

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