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Natuurwetenskappe

Energie-oordrag en kragte

Opvoeders afdeling

Memorandum

(a) Wat neem jy waar?: Die skuifspeld beweeg ook opwaarts en bly hang in die lug onder die magneet.

Wat gebeur?: Die skuifspeld val terug op die bank.

(b) Wat gebeur?: Die skuifspeld behou sy posisie in die lug.

Gevolgtrekking: Magnete kan magnetiese stowwe deur nie-magnetiese stowwe aantrek, maar nie deur magnetiese stowwe nie.

Verklaring: ‘n Tinblikkie word van yster, bedek met ‘n dun lagie tin, vervaardig.

Leerder afdeling

Inhoud

Aktiwiteit: om die aantrekkingskrag van ‘n magneet op magnetiese sowel as nie-magnetiese stowwe te ondersoek [lu 2.3]

(a) Maak ‘n skuifspeld aan ‘n garingdraad vas en monteer die ander punt van die garingdraad met behulp van wondergom op jou bank. Hou ‘n staafmagneet ‘n entjie bo die skuifspeld en lig die magneet op.

Wat neem jy waar? _________________________________________________

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Hou nou die deksel van ‘n tinblikkie tussen die magneet en die skuifspeld.

Onthou, daar moet geen kontak tussen die voorwerpe wees nie.

Wat gebeur? __________________________________________________________

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(b) Herhaal wat julle in 4(a) gedoen het, maar hou nou ‘n vel papier tussen die magneet en die skuifspeld.

Wat gebeur? __________________________________________________________

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Watter gevolgtrekking kan julle maak?_____________________________________

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  • Onthou, die papier is ‘n nie-magnetiese stof en die tindeksel is ‘n magnetiese stof.
  • Probeer verklaar waarom ‘n tinblikkie magneties is, maar nie tin op sy eie nie.

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5. ‘n Magneetveld

‘n Magneet word deur ‘n magneetveld omring. Dit is ‘n gebied in die ruimte rondom ‘n magneet waarin ‘n magneet ‘n krag uitoefen. Die aarde moet dus omring wees deur ‘n magneetveld en dit beteken ook dat ons almal in ‘n magneetveld lewe! Wat sou ons ondervind het indien die aarde nie deur ‘n magneetveld omring was nie?

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Ons gaan nou die magneetveld van ‘n staafmagneet met behulp van ystervylsels ondersoek.

Assessering

Leeruitkomste 2: Die leerder ken, interpreteer en pas wetenskaplike, tegnologiese en omgewingskennis toe.

Assesseringstandaard 2.3: Dit is duidelik wanneer die leerder inligting interpreteer, bv.: interpreteer inligting deur kernidees in die teks te identifiseer, patrone in aangetekende data te vind en gevolgtrekkings te maak uit inligting in verskeie vorme (bv. prente, diagramme en geskrewe teks).

Questions & Answers

Biology is a branch of Natural science which deals/About living Organism.
Ahmedin Reply
what is phylogeny
Odigie Reply
evolutionary history and relationship of an organism or group of organisms
AI-Robot
ok
Deng
what is biology
Hajah Reply
cell is the smallest unit of the humanity biologically
Abraham
what is biology
Victoria Reply
what is biology
Abraham
HOW CAN MAN ORGAN FUNCTION
Alfred Reply
the diagram of the digestive system
Assiatu Reply
allimentary cannel
Ogenrwot
How does twins formed
William Reply
They formed in two ways first when one sperm and one egg are splited by mitosis or two sperm and two eggs join together
Oluwatobi
what is genetics
Josephine Reply
Genetics is the study of heredity
Misack
how does twins formed?
Misack
What is manual
Hassan Reply
discuss biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles
Joseph Reply
what is biology
Yousuf Reply
the study of living organisms and their interactions with one another and their environment.
Wine
discuss the biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles in an essay form
Joseph Reply
what is the blood cells
Shaker Reply
list any five characteristics of the blood cells
Shaker
lack electricity and its more savely than electronic microscope because its naturally by using of light
Abdullahi Reply
advantage of electronic microscope is easily and clearly while disadvantage is dangerous because its electronic. advantage of light microscope is savely and naturally by sun while disadvantage is not easily,means its not sharp and not clear
Abdullahi
cell theory state that every organisms composed of one or more cell,cell is the basic unit of life
Abdullahi
is like gone fail us
DENG
cells is the basic structure and functions of all living things
Ramadan
What is classification
ISCONT Reply
is organisms that are similar into groups called tara
Yamosa
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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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