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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

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
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
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
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
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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