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Natuurwetenskappe

Materie, meting en reaksies

Reaksies tussen soorte materie: sure en basisse

Opvoeder afdeling

Memorandum

Opdrag 10:

Gebruik die kontrolelys (p. 53) as basis vir die assessering.

Aanvullende leesstof vir Aktiwiteit 2.8 Navorsingsopdrag.

Leerder afdeling

Inhoud

Aktiwiteit: om suurreën na te vors [lu 1.1, lu 1.2, lu 1.3, lu 3.2]

OPDRAG 10

“Brandende steenkool gee swaweldioksied af wat reën verander in suurreën. Dit verander die chemiese balans van die grond sodat plante nie goed groei nie”

Doen navorsing oor die vorming van suurreën, asook die uitwerking wat dit op die omgewing het. Die volgende wetenskapproses moet gevolg word vir jou ondersoekende navorsingsprojek. Stappe 1 – 7 moet by die ondersoek ingesluit word. Stap 7 moet voorberei word vir lewering aan ‘n beleidmakende liggaam, soos bv. die regering.

Fokus en beplan projekte DATA-insameling en verwerking DATA-ontleding Kommunikeer bevindings
1.Probleemstelling wat nagevors moet word. Die doel/uitkoms van die projek is om die probleem op te los. 3.DATA-insameling oor die onderwerp, bv. gebruik van die internet, biblioteke, onderhoude, vraelyste, ens. 5.Verkry resultate. Dit moet opgeteken, ontleed en geëvalueer word. Dit bepaal toekomstige beplanning of ‘n herhaling van die proses. 7.Verslaglewering. Dit kan op verskillende maniere gedoen word, bv. ‘n geskrewe dokument.
2.Formuleer ‘n hipotese*. Hierdeur word ‘n moontlike oplossing voorspel.Dit kan reg of verkeerd bewys word. 4.Gebruik data en ondersoek deur eksperimentering, waarneming, ens. 6.Gevolgtrekking. Hier word die hipotese as reg of verkeerd bewys.

* Hipotese: Voorlopige stelling wat nog bewys moet word.

NAVORSING

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Questions & Answers

the diagram of the digestive system
Assiatu Reply
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 environments
AI-Robot
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
in what situation (s) would be the use of a scanning electron microscope be ideal and why?
Kenna Reply
A scanning electron microscope (SEM) is ideal for situations requiring high-resolution imaging of surfaces. It is commonly used in materials science, biology, and geology to examine the topography and composition of samples at a nanoscale level. SEM is particularly useful for studying fine details,
Hilary
cell is the building block of life.
Condoleezza Reply
what is cell divisoin?
Aron Reply
Diversity of living thing
ISCONT
what is cell division
Aron Reply
Cell division is the process by which a single cell divides into two or more daughter cells. It is a fundamental process in all living organisms and is essential for growth, development, and reproduction. Cell division can occur through either mitosis or meiosis.
AI-Robot
What is life?
Allison Reply
life is defined as any system capable of performing functions such as eating, metabolizing,excreting,breathing,moving,Growing,reproducing,and responding to external stimuli.
Mohamed
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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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