2.1 Physical Quantities

Question 1

What are the seven SI base quantities and units? (7)

Answer 1

• Length - metre (m)
• Mass - kilogram (kg)
• Time - second (s)
• Electric current - ampere (A)
• Temperature - kelvin (K)
• Amount of substance - mole (mol)
• Luminous intensity - candela (cd)

Question 2

Derived Units - Volume

Answer 2

m^3

Question 3

Derived Units - Velocity

Answer 3

ms^-1

Question 4

Derived Units - Acceleration

Answer 4

ms^-2

Question 5

Derived Units - Density

Answer 5

kg m^-3

Question 6

Derived Units - Momentum

Answer 6

kg ms^-1

Question 7

Derived Units - Force

Answer 7

newton (N)

kg ms^-2

Question 8

Derived Units - Pressure

Answer 8

pascal (Pa)

N m^-2

Question 9

Derived Units - Work Done (energy)

Answer 9

joule (J)

N m

Question 10

Derived Units - Power

Answer 10

watt (W)

J s^-1

Question 11

Derived Units - Electrical Charge

Answer 11

coulomb (C)

A s

Question 12

Derived Units - Potential Difference

Answer 12

volt (V)

J C^-1

Question 13

Derived Units - Resistance

Answer 13

ohm

V A^-1

Question 14

Derived Units - Frequency

Answer 14

hertz (Hz)

s^-1

Question 15

Prefixes - pico (p)

Answer 15

10^-12

Question 16

Prefixes - nano (n)

Answer 16

10^-9

Question 17

Prefixes - micro (mu symbol)

Answer 17

10^-6

Question 18

Prefixes - milli (m)

Answer 18

10^-3

Question 19

Prefixes - centi (c)

Answer 19

10^-2

Question 20

Prefixes - deci (d)

Answer 20

10^-1

Question 21

Prefixes - kilo (k)

Answer 21

10^3

Question 22

Prefixes - mega (M)

Answer 22

10^6

Question 23

Prefixes - giga (G)

Answer 23

10^9

Question 24

Prefixes - tera (T)

Answer 24

10^12

Question 25

Prefixes - peta (P)

Answer 25

10^15

Question 26

Prefixes - exa (E)

Answer 26

10^18

Question 27

Prefixes - femto (f)

Answer 27

10^-15

Question 28

Prefixes - atto (a)

Answer 28

10^-18

Question 29

Prefixes - 10^18

Answer 29

exa (E)

Question 30

Prefixes - 10^15

Answer 30

peta (P)

Question 31

Prefixes - 10^12

Answer 31

tera (T)

Question 32

Prefixes - 10^9

Answer 32

giga (G)

Question 33

Prefixes - 10^6

Answer 33

mega (M)

Question 34

Prefixes - 10^3

Answer 34

kilo (k)

Question 35

Prefixes - 10^2

Answer 35

hecto (h)

Question 36

Prefixes - hecto (h)

Answer 36

10^2

Question 37

Prefixes - deka (da)

Answer 37

10^1

Question 38

Prefixes - 10^1

Answer 38

deka (da)

Question 39

Prefixes - 10^-1

Answer 39

deci (d)

Question 40

Prefixes - 10^-2

Answer 40

centi (c)

Question 41

Prefixes - 10^-3

Answer 41

milli (m)

Question 42

Prefixes - 10^-6

Answer 42

micro (mu symbol)

Question 43

Prefixes - 10^-9

Answer 43

nano (n)

Question 44

Prefixes - 10^-12

Answer 44

pico (p)

Question 45

Prefixes - 10^-15

Answer 45

femto (f)

Question 46

Prefixes - 10^-18

Answer 46

atto (a)