1.1 Physical Quantities

Question 1

base unit

Answer 1

unit from which all other units can be derived

Question 2

derived unit

Answer 2

unit that results from mathematical combination of SI base units

Question 3

6 SI base units

Answer 3

kilogram
metre
mole
kelvin
ampere
second

Question 4

what do all physical quantities consist of?

Answer 4

numerical magnitude and a unit

Question 5

homogenous equation

Answer 5

same units on both sides of = sign
equation = valid

Question 6

inhomogeneous equation

Answer 6

equation = invalid
different units on both sides of = sign

Question 7

significant figures

Answer 7

indicates how accurate we think answer is

Question 8

10 prefixes

Answer 8

tera
giga
mega
kilo
centi
milli
micro
nano
pico
femto

Question 9

multiplier for tera

Answer 9

12

Question 10

multiplier for giga

Answer 10

9

Question 11

multiplier for mega

Answer 11

6

Question 12

multiplier for kilo

Answer 12

3

Question 13

multiplier for centi

Answer 13

-2

Question 14

multiplier for milli

Answer 14

-3

Question 15

multiplier for micro

Answer 15

-6

Question 16

multiplier for nano

Answer 16

-9

Question 17

multiplier for pico

Answer 17

-12

Question 18

multiplier for femto

Answer 18

-15

Question 19

density SI base unit

Answer 19

kgm-3

Question 20

unit of force and weight

Answer 20

newtons (N)