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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

Discuss the differences between taste and flavor, including how other sensory inputs contribute to our  perception of flavor.
John Reply
taste refers to your understanding of the flavor . while flavor one The other hand is refers to sort of just a blend things.
Faith
While taste primarily relies on our taste buds, flavor involves a complex interplay between taste and aroma
Kamara
which drugs can we use for ulcers
Ummi Reply
omeprazole
Kamara
what
Renee
what is this
Renee
is a drug
Kamara
of anti-ulcer
Kamara
Omeprazole Cimetidine / Tagament For the complicated once ulcer - kit
Patrick
what is the function of lymphatic system
Nency Reply
Not really sure
Eli
to drain extracellular fluid all over the body.
asegid
The lymphatic system plays several crucial roles in the human body, functioning as a key component of the immune system and contributing to the maintenance of fluid balance. Its main functions include: 1. Immune Response: The lymphatic system produces and transports lymphocytes, which are a type of
asegid
to transport fluids fats proteins and lymphocytes to the blood stream as lymph
Adama
what is anatomy
Oyindarmola Reply
Anatomy is the identification and description of the structures of living things
Kamara
what's the difference between anatomy and physiology
Oyerinde Reply
Anatomy is the study of the structure of the body, while physiology is the study of the function of the body. Anatomy looks at the body's organs and systems, while physiology looks at how those organs and systems work together to keep the body functioning.
AI-Robot
what is enzymes all about?
Mohammed Reply
Enzymes are proteins that help speed up chemical reactions in our bodies. Enzymes are essential for digestion, liver function and much more. Too much or too little of a certain enzyme can cause health problems
Kamara
yes
Prince
how does the stomach protect itself from the damaging effects of HCl
Wulku Reply
little girl okay how does the stomach protect itself from the damaging effect of HCL
Wulku
it is because of the enzyme that the stomach produce that help the stomach from the damaging effect of HCL
Kamara
function of digestive system
Ali Reply
function of digestive
Ali
the diagram of the lungs
Adaeze Reply
what is the normal body temperature
Diya Reply
37 degrees selcius
Xolo
37°c
Stephanie
please why 37 degree selcius normal temperature
Mark
36.5
Simon
37°c
Iyogho
the normal temperature is 37°c or 98.6 °Fahrenheit is important for maintaining the homeostasis in the body the body regular this temperature through the process called thermoregulation which involves brain skin muscle and other organ working together to maintain stable internal temperature
Stephanie
37A c
Wulku
what is anaemia
Diya Reply
anaemia is the decrease in RBC count hemoglobin count and PVC count
Eniola
what is the pH of the vagina
Diya Reply
how does Lysin attack pathogens
Diya
acid
Mary
I information on anatomy position and digestive system and there enzyme
Elisha Reply
anatomy of the female external genitalia
Muhammad Reply
Organ Systems Of The Human Body (Continued) Organ Systems Of The Human Body (Continued)
Theophilus Reply
what's lochia albra
Kizito
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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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