Matter:
(1){ Is every thing that has Mass & Volume.}
(2) { ,, ,, ,, ,, ,, ,, & 0ccupies apart of space.}
States of Matter are:
1) Solids : as ( Stone – glass – plastic – Iron - …………)
2) Liquids : as ( water – oil – Milk – juice - ……….)
3) Gases : as ( Air – oxygen – water vapour ……..)
Matters differ in Shape , colour & structure.
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Measuring of Length
(1)Measuring Tools:
a) graduated ruler.
b) ,, tape.
(2) Measuring Units:
a) Centimeter (Cm): To measure small lengths.
b) Meter (m): ,, ,, large lengths.
c) Kilometer (km): ,, ,, very big lengths.
1(km) = 1000 m , 1 meter = 100 Cm , ½ meter = 50 cm
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Measuring Mass
Mass:
It is the amount of matter that the object contains.
(1)Measuring Tools:
1) Common (2 pan)balance.
2) Sensitive balance:
Used to estimate the small mass as things
made of (gold, silver)& chemical materials in lab.
(2) Measuring Units:
1) gram (gm): suitable for measuring small mass as Gold.
2) kilogram(kg): ,, ,, ,, large mass as fruits.
3) Ton: ,, ,, ,, very big mass.
1 Ton = 1000 kg , 1 k.g = 1000 gram
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Measuring the Volume
Volume:
It is the space occupied by the object (Matter).
(1)Measuring Tools:
1) Graduated cylinder: to measure volume of liquids &irregular solid.
2) Ruler: to measure dimensions of regular solid body.
(2) Measuring Units:
1) Cubic Centimeter (Cm3): to estimate volume of liquids & solids.
2) ,, meter (m3): ,, ,, ,, ,, solids.
3) Litre: ,, ,, ,, ,, liquids.
1 Litre = 1000 Cm3 = 1000 millilitres.
Ways of Measuring Volumes
Of Liquids Of Solids
As water
By using
Measuring cylinder Regular IrregularAs cuboid(brick)
V1
V2
L
H
W
Volume of cuboid (brick)
= L X W X H……Cm3
1) Put amount of water in
Measuring cylinder.
2) Determine volume of
Water = v1
3) Put the stone in water.
4) Record the volume of
(water + stone) = v2
Volume of stone =
V2 – V1…….Cm3
The eyes must be
At the lower point
Of the surface.
*when the body is submerged completely
It spills water.
The volume = the volume of spilled water.
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الجمعة نوفمبر 16, 2012 11:05 pm
