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2.2 Maak 'n waterwiel

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Tegnologie

Graad 7

Stelsels en beheer: water

Module 8

Maak ‘n waterwiel

Opdrag 1:

LU/AS 1.10

Jy is nou gereed om die produk te maak. Dit word realisering genoem. In die werklikheid word ‘n prototipe van ‘n ontwerp eerste gebou en die finale produk ontwikkel dan uit hierdie prototipe. Jy het slegs tyd om hierdie model te bou wat deur toetsing en aanpassing so noukeurig as moontlik aan die spesifikasies moet voldoen.

Voordat jy jou model aan die res van die klas demonstreer, moet jy die volgende opdragte skriftelik voltooi:

Opdrag 2:

LU/AS 1.10

Voltooi die volgende tabel om aan te dui watter materiaal en gereedskap jy gebruik het.

Deel van masjien Materiaal/gereedskap gebruik Afmetings (indien van toepassing)
Die rotor
Die as
Die lemme
Die staander
Die drukspykers

Opdrag 3:

LU/AS 1.9

Verduidelik stap vir stap d.m.v. ‘n vloeidiagram hoe jy te werk gegaan het met die maak van jou masjien. Meet- Vorm- Heg- Afwerking. (Wenk: Begin ‘n sin met ‘n werkwoord en gebruik slegs een werkwoord per stap.) Voeg ook by hoeveel tyd jy aan elke stap spandeer het.

Agtergrond: Vloeidiagramme

Moontlike Oplossings

  1. Maak van lemme
  1. Plasing van lemme aan rotor en montering aan as
  1. Voorbereiding van staander
  1. Plasing van waterwiel in staander

  1. Vasmaak van hystoestel (katrol met gewig) aan as.
  1. Plasing van waterwiel in staander

Evaluering

Opdrag 4:

Om te evalueer hoe maklik of moeilik die maak van jou masjien was deur slegs ‘n regmerkie in die toepaslike kolom te maak

LU/AS 1.13

SLEUTEL: 1 – kon glad nie doen

2 – kon doen met hulp

3 – het gesukkel, maar kon dit op eie regkry

4 – het dit maklik op my eie gedoen

1 2 3 4
1. Ek kon die as deur die rotor steek.
2. Ek kon die lemme op die rotor monteer.
3. Ek kon die as in ‘n staander monteer sodat die as vryelik in die rondte draai.
4. Ek kon die staander in ‘n plat bak met 4 ℓ water in laat staan sonder dat die masjien aan die water raak.
5. Ek kon die meganisme om die drukspykers mee op te lig, monteer.
6. Ek het volgens ‘n logiese volgorde gewerk en was georganiseerd.
7. Ek het akkuraat uitgemeet volgens die instruksies van Opdrag 4.
8. Ek het die gereedskap met sorg hanteer.
9. Ek het my werkarea netjies gehou.
10. Ek het die materiale spaarsaam gebruik.

Assessering

Leeruitkomstes(LUs)
LU 1
Tegnologiese Prosesse en VaardighedeDie leerder is in staat om tegnologiese prosesse en vaardighede eties en verantwoordelik toe te pas deur gepaste inligtings- en kommunikasietegnologie te gebruik.
Assesseringstandaarde(ASe)
Dit is duidelik wanneer die leerder:
maak :
1.9 ‘n plan ontwikkel vir die maak van ‘n produk, met besonderhede oor al die volgende:
  • hulpbronne en hulpmiddels wat nodig is (bv. lyste materiaal, gereedskap, mense, koste);
  • sketse wat die nodige afmetings of hoeveelhede toon;
  • al die stappe wat nodig is vir die maak van die produk;
1.10 gepaste gereedskap en materiaal kies en gebruik om produkte deur middel van gepaste tegnieke te maak deur verskillende soorte materiaal akkuraat te meet, uit te merk, te knip/sny of te skei, te vorm of te vervorm, te heg, te las of saam te voeg, en af te rond;
1.12 die produk of stelsel evalueer gebaseer op kriteria wat direk met die ontwerpopdrag en sommige van die spesifikasies en beperkings verband hou, en verbeteringe of wysigings voorstel;
1.13 die doeltreffendheid van die plan van aksie wat gevolg is evalueer en voorstel hoe toekomstige planne verbeter kan word.

Questions & Answers

Three charges q_{1}=+3\mu C, q_{2}=+6\mu C and q_{3}=+8\mu C are located at (2,0)m (0,0)m and (0,3) coordinates respectively. Find the magnitude and direction acted upon q_{2} by the two other charges.Draw the correct graphical illustration of the problem above showing the direction of all forces.
Kate Reply
To solve this problem, we need to first find the net force acting on charge q_{2}. The magnitude of the force exerted by q_{1} on q_{2} is given by F=\frac{kq_{1}q_{2}}{r^{2}} where k is the Coulomb constant, q_{1} and q_{2} are the charges of the particles, and r is the distance between them.
Muhammed
What is the direction and net electric force on q_{1}= 5µC located at (0,4)r due to charges q_{2}=7mu located at (0,0)m and q_{3}=3\mu C located at (4,0)m?
Kate Reply
what is the change in momentum of a body?
Eunice Reply
what is a capacitor?
Raymond Reply
Capacitor is a separation of opposite charges using an insulator of very small dimension between them. Capacitor is used for allowing an AC (alternating current) to pass while a DC (direct current) is blocked.
Gautam
A motor travelling at 72km/m on sighting a stop sign applying the breaks such that under constant deaccelerate in the meters of 50 metres what is the magnitude of the accelerate
Maria Reply
please solve
Sharon
8m/s²
Aishat
What is Thermodynamics
Muordit
velocity can be 72 km/h in question. 72 km/h=20 m/s, v^2=2.a.x , 20^2=2.a.50, a=4 m/s^2.
Mehmet
A boat travels due east at a speed of 40meter per seconds across a river flowing due south at 30meter per seconds. what is the resultant speed of the boat
Saheed Reply
50 m/s due south east
Someone
which has a higher temperature, 1cup of boiling water or 1teapot of boiling water which can transfer more heat 1cup of boiling water or 1 teapot of boiling water explain your . answer
Ramon Reply
I believe temperature being an intensive property does not change for any amount of boiling water whereas heat being an extensive property changes with amount/size of the system.
Someone
Scratch that
Someone
temperature for any amount of water to boil at ntp is 100⁰C (it is a state function and and intensive property) and it depends both will give same amount of heat because the surface available for heat transfer is greater in case of the kettle as well as the heat stored in it but if you talk.....
Someone
about the amount of heat stored in the system then in that case since the mass of water in the kettle is greater so more energy is required to raise the temperature b/c more molecules of water are present in the kettle
Someone
definitely of physics
Haryormhidey Reply
how many start and codon
Esrael Reply
what is field
Felix Reply
physics, biology and chemistry this is my Field
ALIYU
field is a region of space under the influence of some physical properties
Collete
what is ogarnic chemistry
WISDOM Reply
determine the slope giving that 3y+ 2x-14=0
WISDOM
Another formula for Acceleration
Belty Reply
a=v/t. a=f/m a
IHUMA
innocent
Adah
pratica A on solution of hydro chloric acid,B is a solution containing 0.5000 mole ofsodium chlorid per dm³,put A in the burret and titrate 20.00 or 25.00cm³ portion of B using melting orange as the indicator. record the deside of your burret tabulate the burret reading and calculate the average volume of acid used?
Nassze Reply
how do lnternal energy measures
Esrael
Two bodies attract each other electrically. Do they both have to be charged? Answer the same question if the bodies repel one another.
JALLAH Reply
No. According to Isac Newtons law. this two bodies maybe you and the wall beside you. Attracting depends on the mass och each body and distance between them.
Dlovan
Are you really asking if two bodies have to be charged to be influenced by Coulombs Law?
Robert
like charges repel while unlike charges atttact
Raymond
What is specific heat capacity
Destiny Reply
Specific heat capacity is a measure of the amount of energy required to raise the temperature of a substance by one degree Celsius (or Kelvin). It is measured in Joules per kilogram per degree Celsius (J/kg°C).
AI-Robot
specific heat capacity is the amount of energy needed to raise the temperature of a substance by one degree Celsius or kelvin
ROKEEB
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Source:  OpenStax, Tegnologie graad 7. OpenStax CNX. Sep 10, 2009 Download for free at http://cnx.org/content/col11031/1.1
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