Measurement Flashcards
1
Q
Base quantities and their SI Units
A
Length - metre Mass - kilogram Time - second Electric current - ampere Thermodynamic temperature - kelvin Luminous intensity - candela Amount of substance - mole
2
Q
Factors, Prefixes and Symbols
A
10^12 - Teva - T 10^9 - giga - G 10^6 - mega - M 10^3 - kilo - k 10^-1 - deci - d 10^-2 - centi - c 10^-3 - milli - m 10^-6 - macro - weird u 10^-9 - nano - n 10^-12 - pico - p
3
Q
what is 10^-16m
A
radius of hydrogen nucleus
4
Q
what is 10^-10m
A
size of a typical atom
5
Q
what is 10^-4m
A
average width of human hair
6
Q
what is 10^-3
A
diameter of a wire
7
Q
what is 10^-1
A
length of chopsticks
8
Q
what is 10^2
A
length of football field
9
Q
what is 10^4
A
height of mount everest
10
Q
what is 10^6/10^7
A
radius of earth
11
Q
what is 10^15/10^16
A
distance travelled by light in one year
12
Q
what is 10^22/10^23
A
distance from earth to andromeda galaxy
13
Q
Zero error for vernier caliper
A
after 0 on main scale - positive
before 0 on main scale - negative
14
Q
Zero error for micrometer
A
below 0 on main scale - positive
above 0 on main scale - negative
15
Q
Precision of Tape measure, application
A
0.1cm, measure someone’s waist
