Form 3 Term 1

Question 1

two types of quantities

Answer 1

base/fundamental and derived ( it is fundamental for physics… see what I did there)

Question 2

any other quantity than the ones with a standard for measurement of the same kind of quantity can be expressed as

Answer 2

a multiple of the unit of measurement

Question 3

no. of base/fundamental quantities

Answer 3

5

Question 4

the five and their units are

Answer 4

length,l-metre,m
time,t-second,s
mass,m-kilogram,kg
temperature,T(must be capital)-kelvin.K
electric current,I-ampere,A

Question 5

prefixes for S.I units

Answer 5

Mega,M- 10^6
Kilo,k- 10^3
Centi,c- 10^-2
Milli,m- 10^-3
Micro, check book for symbol- 10^-6

Question 6

1 ms( millisecond)

Answer 6

1*10^-3s
=1/1000
=0.001s

Question 7

eg. of derived quantities

Answer 7

volume,force,acceleration,velocity,resistance (namely anything that can be measured

Question 8

units of derived quantities are referrred to as

Answer 8

derived units

Question 9

derived units can be found

Answer 9

by using the defining formula for the quantity

Question 10

the unit of a specific quantity changes, true or false

Answer 10

false- area of square is m square, just like area of a rectangle

Question 11

study rules of indices

Answer 11

too much work to type

Question 12

regular shapes are

Answer 12

shapes that can be recognised, squares rectangles triangles circle etc

Question 13

irregular shapes are found by using

Answer 13

the counting the squares method

Question 14

steps to find irregular shapes

Answer 14

divide the irregular shape into regular shapes that you can recognise
find the area of the individual shapes then add them up

Question 15

for ease of calculation, we

Answer 15

divide the shapes into squares

Question 16

steps for grid thingy

Answer 16

grid is drawn over shape consisting of equal sized squares
area of one square is calculated
number of squares completely covered by grid are counted and noted
no. of squares that are not completely covered but have more than half of their area covered are counted
numbers obtained in steps 3 and 4 are added
total no. multiplied by area of one square

Question 17

do regular shaped objects have a formula that can be used to calculate their volume?

Answer 17

oui, si, yes, sim, ewe, 예

Question 18

two methods to find the area of an irregular shaped object

Answer 18

displacement can method

measuring cylinder method

Question 19

im srry but im tired, we shall talk about the rest in our next meet

Answer 19

bye