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Natuurwetenskappe

Materie, meting en reaksies

Materie en meting

Opvoeder afdeling

Memorandum

3. Volume van klip:

Wetenskaplike formule

  • Jy kan nie ‘n formule gebruik nie, want die klip is nie op al die plekke ewe lank of ewe breed nie.

Waterverplasing

Neem ‘n eerste lesing van die water in die meetsilinder. Bind daarna ‘n toutjie om die klip en laat sak dit in die meetsilinder gevul met water. Dan wag jy tot al die lugborrels ontsnap het en dan neem jy die tweede lesing. Trek die twee lesings van mekaar af en dan het jy die volume van die klip.

Leerder afdeling

Inhoud

Aktiwiteit: om die volume van liggame wat uit ‘n vaste stof bestaan te kan meet [lu 1.2]

Om te verduidelik hoe 'n mens die volumes van vaste liggame bepaal, gaan ons die volgende voorbeelde gebruik.(Ons gebruik liggame wat in ons maatsilinder kan inpas):

'n Kubus is 'n reëlmatige sesvlak met al ses endvlakke loodreg op mekaar.

V = ℓ3

'n Driehoekige prisma is 'n vyfvlak met twee identiese driehoekige endvlakke met drie syvlakke loodreg op die endvlakke.

V = ½bhH

'n Reghoekige prisma is ‘n sesvlak met twee identiese reghoekige endvlakke met vier syvlakke loodreg op die endvlakke.

V = ℓbh

Twee maniere kan gebruik word om die volumes van die bogenoemde voorwerpe te bepaal:

  • Die berekening van volume deur die toepassing van 'n wetenskaplike formule ;
  • Die berekening van volume deur die tegniek van waterverplasing .

Die tegniek van volumeberekening deur waterverplasing werk soos volg:

Die maatsilinder word halfvol water gemaak. Neem die lesing om te bepaal presies hoeveel water in die maatsilinder is. Daarna word die voorwerp waarvan die volume bepaal word, stadig in die maatsilinder laat sak.

Tik teen die maatsilinder om seker te maak dat lugborrels ontsnap.

Neem nou weer 'n lesing. Trek die eerste lesing van die tweede lesing af om die volume te bepaal.

1. Gebruik nou albei metodes om die volumes van die gegewe voorwerpe te bepaal:

Voorwerp Volume soos bereken Volume: Waterverplasing
Metaalkubus
Reghoekige glasblok
Prisma

6 x ½ = (3)

2. Het jy enige verskil in volume tussen die twee metodes gevind?

_____________________________________________________________________

(1)

Indien wel, waaraan sal jy die verskil toeskryf?

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

(2)

3. Hoe sal jy die volume van 'n klip soos dié in die volgende skets bepaal?

  • Met gebruik van 'n wetenskaplike formule:

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

(2)

  • Deur waterverplasing:

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

(2)

Assessering

Leeruitkomste 1: Die leerder is in staat om met selfvertroue op weetgierigheid oor natuurlike verskynsels te reageer, en om binne die konteks van wetenskap, tegnologie en die omgewing verbande te ondersoek en probleme op te los.

Assesseringstandaard 1.2: Dit is duidelik wanneer die leerder ondersoeke uitvoer en data versamel: organiseer en gebruik apparaat/toerusting of bronne om inligting in te win en te noteer.

Questions & Answers

what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
How can I make nanorobot?
Lily
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
how can I make nanorobot?
Lily
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Natuurwetenskappe graad 7. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11078/1.1
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