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Natuurwetenskappe

Materie, meting en reaksies

Materie en meting

Opvoeder afdeling

Memorandum

1. My metode:

Oppervlakte = l × b

= 6 cm × 10 cm

= 60 cm 2

2. A = ℓ × b

Area (oppervlakte) = lengte vermenigvuldig met breedte

Jy gebruik hierdie formule om die oppervlakte van ‘n reghoek te bepaal.

3. 25 cm 2

Leerder afdeling

Inhoud

Aktiwiteit: om oppervlakte te kan bepaal deur meting en berekening [lu 1.2]

Het jy al iemand hoor sê: "Die huis se grootte is 150 vierkante meter (150 m²)"? Is julle seker dat julle die term vierkante meter verstaan?

Kyk na die skets:

Elke blokkie stel een vierkante meter voor. 'n Vierkante meter is 'n vierkantige oppervlakte waarvan elke sy een meter lank is.

As ons dus sê die oppervlakte van fig. X is 100 m², bedoel ons dat ons een- honderd oppervlaktes van 1 m² daarin kan plaas. 'n Mens sou elke blokkie kon tel om die grootte van die oppervlakte te bepaal, maar daar is 'n korter metode.

Indien die lengte van die een sy (10 m) vermenigvuldig word met die lengte van die ander sy (10 m), word die aantal vierkante meterblokkies wat in die totale oppervlakte kan inpas (100), verkry (10 m × 10 m = 100 m²).

1m 2 1m 2 1m 2 1m 2 1m 2 1m 2 1m 2 1m 2 1m 2 1m 2
1m 2
1m 2
1m 2
1m 2
1m 2
1m 2
1m 2
1m 2
1m 2

Fig. X

1. Hoe sal jy die oppervlakte van die volgende reghoek bepaal?(Elke blokkie is 1 cm²)Die lengte van hierdie reghoek is 100 mm en die breedte is 60 mm.

My metode:

_____________________________________________________________________

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_____________________________________________________________________

_____________________________________________________________________

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(5)

2. Wat beteken die volgende formule: A = ℓ size 12{ times } {} b?

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

3. Pas die volgende formule toe om die oppervlakte van die gegewe driehoek te bepaal:

b staan vir die lengte van die basis

h staan vir die hoogte van die loodregte lyn

  • My antwoord (geskat):______________________________________________
  • My antwoord (bereken volgens die gegewe formule)::____________________

(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
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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Wellington
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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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