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What is the full form of SI System
Systeme International d’unites
Define a multiple.
Multiples of standard units are used to make large measurements.
How many centuries = 1 Millennium?
10 centuries
What does NPL stand for
National Physical Laboratory
Submultiples are also known as___________
Fractions
Define a submultiple.
Submultiples of standard units are used to make small measurements.
2000 metres=? Kilometres
2 kilometers
In which year did the international conference of weights and measurement decide to use standard units
1960
Name two inaccurate ways of measurement
Handspan and footsteps
What is a measurement
Measurement is the comparison of the unknown quantity with some fixed quantity of its same kind.
30 quintals=? Metric tons
30 metric tons
Choose the correct SI unit
Second, hour, minutes
Second
Name some places where we use measurement
Cooking, checking temperature of sick people, making garments,weighing Fruits and vegetables
How many days are 2 years
730 days
What is the SI unit of weight
Kilogram, gram, quintal
Kilogram
Choose the correct SI unit.
Metre, foot, centimeter
Metre
1 Millennium =?years
1000 years
How to measure a curved line
Open a divider so that it’s legs are open at a small distance. Place one leg at the start of the line and take the divider along the line. Then whatever distance is left, measure it separately and then multiply the distance between the legs and the number of steps (without counting the ones that were measured separately)
Example- Number of steps-5
Distance between legs-5mm
Distance measured separately-2 mm
5x5+2=22mm