Measurement

Question 1

What is the SI unit and symbol for mass

Answer 1

Kilogram. kg

Question 2

What is the SI unit and symbol for Time

Answer 2

Second. s

Question 3

What is the SI unit and symbol for electric current

Answer 3

Ampere. A

Question 4

What is the SI unit and symbol for temperature

Answer 4

Kelvin. K

Question 5

What is the SI unit and symbol for luminous Intensity

Answer 5

Candela. Cd

Question 6

What is the SI unit and symbol for amount of a substance

Answer 6

mole. mol

Question 7

What is meant by a derived unit of symbol

Answer 7

The unit of symbol is derived from using composites of base units

Also called Composite symbols

Question 8

What is the name of unit and the derived unit symbol for :

Area

Answer 8

Square meter. m^2

Question 9

What is the name of unit and the derived unit symbol for :

Volume

Answer 9

Cubic metre. m^3

Question 10

What is the name of unit and the derived unit symbol for :

Frequency

Answer 10

Hertz. Hz. s^-1

Question 11

What is the name of unit and the derived unit symbol for :

Density

Answer 11

Kilogram per cubic metre. kgm^3

Question 12

What is the name of unit and the derived unit symbol for :

Velocity

Answer 12

metres per second. ms^-1

Question 13

What is the name of unit and the derived unit symbol for :

Acceleration

Answer 13

Metre per square second. ms^-2

Question 14

What is the name of unit and the derived unit symbol for :

Force

Answer 14

Newton. N. kg m s^-2

Question 15

What is the name of unit and the derived unit symbol for :

Pressure

Answer 15

Pascal. Pa. N m^-2

Question 16

What is the name of unit and the derived unit symbol for :

Energy. Work. Heat

Answer 16

Joule. J. Nm

Question 17

What is the name of unit and the derived unit symbol for :

Power

Answer 17

Watt. W. Js^-1

Question 18

What is the name of unit and the derived unit symbol for :

Quantity of electricity

Answer 18

Couloms. C. As

Question 19

What is the name of unit and the derived unit symbol for :

Potential difference

Answer 19

Volt. V. W A^-1

Question 20

What is the name of unit and the derived unit symbol for :

Electric resistance

Answer 20

Ohm. V A^-1

Question 21

What is the name of unit and the derived unit symbol for :

Heat capacity

Answer 21

Joule per Kelvin. J K^-1

Question 22

What is the name of unit and the derived unit symbol for :

Specific heat capacity

Answer 22

Joule per kilogram per Kelvin

J kg^-1 K^-1

Question 23

A prefix of kilo, means that the answer is multiplied by 10^3

What is the prefix and it’s symbol for:

10^12

Answer 23

tera. T

Question 24

A prefix of kilo, means that the answer is multiplied by 10^3

What is the prefix and it’s symbol for:

10^9

Answer 24

giga. G

Question 25

A prefix of kilo, means that the answer is multiplied by 10^3 What is the prefix and it's symbol for: 10^6

Answer 25

mega. M

Question 26

A prefix of kilo, means that the answer is multiplied by 10^3 What is the prefix and it's symbol for: 10^2

Answer 26

hecto. h

Question 27

A prefix of kilo, means that the answer is multiplied by 10^3 What is the prefix and it's symbol for: X 10

Answer 27

deca. da

Question 28

A prefix of kilo, means that the answer is multiplied by 10^3 What is the prefix and it's symbol for: 10 ^-12

Answer 28

pico. p

Question 29

A prefix of kilo, means that the answer is multiplied by 10^3 What is the prefix and it's symbol for: 10^-9

Answer 29

nano. n

Question 30

A prefix of kilo, means that the answer is multiplied by 10^3 What is the prefix and it's symbol for: 10^-6

Answer 30

micro. u

Question 31

A prefix of kilo, means that the answer is multiplied by 10^3 What is the prefix and it's symbol for: 10^-3

Answer 31

milli. m

Question 32

A prefix of kilo, means that the answer is multiplied by 10^3 What is the prefix and it's symbol for: 10^-2

Answer 32

centi. c

Question 33

A prefix of kilo, means that the answer is multiplied by 10^3 What is the prefix and it's symbol for: 10^-1

Answer 33

deci. d

Question 34

Convert 3 cm^3 to m^3

Answer 34

``` 3 x (10^-2)^-3 3 x 10^-6 m3 ```

Question 35

A cube with sides 3 cm each Work out the volume of the cuve in m^3

Answer 35

3 x 3 x 3 x (10^-2)3 9 x 10^-6

Question 36

Convert 1m^2 to dm^2

Answer 36

1m = 10 dm 1 m^2 = 10^2 dm^2 = 100 dm^2

Question 37

Define significant figures

Answer 37

The significant figures of a number are those digits that carry meaning contributing to its precision

Question 38

What is the SI unit and symbol for length

Answer 38

Meter. m

Question 39

What is meant by "scientific notation"

Answer 39

It is a method used to express and work with very large or small numbers

Question 40

Def analogue meters

Answer 40

Are meters that display their readings