Physics and Measurement
Fill in the blank
1.A physical quantity must be expressed with its number and ……….. . 1.unit
- A unit is a ……….. quantity. 2.standard
- Mass is a ……..quantity. 3.basic
4.Area is a ……….quantity. 4.derived
5.The British system is also called the ……. system. 5.FPS - Length , mass and ……. called basic quantities. 6.time
7.The unit of mass in CGS system is ……….. . 7.gram
8.We use a ruler for measuring ……….. . 8.length - The SI unit of area is the ……… . 9.m2
10.The unit of length in …….. is the foot. 10.British system - The standard of the number 5068 is ………. . 11.5.068 x 2103
12.Volume is the ………… quantity. 12.derived - The unit of time in all system of measurement is the ………. . 13. kilogram
- The unit of mass in MKS system is ……… . 14.kilogram
15.The universe has the ………. size. 15.largest
16.The unit slug is the unit of ……… . 16.mass - The SI unit is the modified form of …….. system. 17.MKS
- A watch can be us measured by a ……… . 19.balance
- One metre is equal to …….km. 20.10-3
- Elementary particles have the ……… size. 21.smallest
22.The earth can be regarded as a ………. . 22.clock - The age of universe is ……… s. 23.2 x 1018
24…….. is the language of physics. 24.Mathematics - There are ……. seconds in one year. 25.3.17 x 107
- The size of the universe is ……… time larger than that of an elementary particle. 26.1041
- A 45 mih-1 is equal to …….. fts-1. 27.66
28.A metre stick is …. than the yard stick. 28.longer - One gram is equal to …. kg. 29.10-3
- Physics is the subject which studies ………. phenomena. 30.natural