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Natuurwetenskappe

Graad 4

Die planeet aarde en die heelal

Module 44

Weervoorspelling

Aktiwiteit:

Om oor weervoorspelling te praat

[lu 3.1]

Maar waar kry die weervoorspellers hulle inligting?

Hulle moet inligting kry. Dit kom van weersatelliete, weerballonne en aardstasies. Metsat is die naam van so ‘n weersatelliet wat om die aarde wentel.

Daar is natuurlik ‘n kamera in die Metsat wat foto’s neem van die aarde wat die wolke wys en sneeu en storms wat aan die kom is, aantoon. Dit kan ook warm of koue plekke op die aarde aandui.

Inligting word versamel van die temperatuur, humiditeit (dit is die vog in die lug), windspoed- en rigting, wolktipes, lugdruk en reënval. Al hierdie inligting gaan nou na die weerstasie toe waar mense die inligting in ‘n rekenaar invoer om te verwerk.

Nou word ‘n weerkaart geteken wat ons op televisie en in die media sien.

Wie van julle wil probeer om ‘n weervoorspelling oor vandag se weer aan die klas te gee net soos op televisie gedoen word?

Probeer om elke dag ‘n kaart uit die koerant te knip en te bestudeer. Kyk mooi na die sleutel wat die verskillende soorte weer op die kaart aandui.

Hieronder is vir jou ‘n voorbeeld:

Bestudeer die sleutel en skryf die korrekte benamings vir die tekens neer:

______________________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

_______________________________________________

________________________________________________

__________________________________________________

________________________________________________

Teken ‘n prentjie van jou gunsteling weer.

SON

REëN

BEWOLK

Hou nou jou eie weerkaart vir een week. Teken ‘n sonnetjie, reën of wolkie in die tweede kolom van jou tabel van vier kolomme en vul daarnaas die windspoed en temperatuur van elke dag ook in.

Kolom 1: Dag

Kolom 2: Weer

Kolom 3: Windspoed

Kolom 4: Temperatuur

Assessering

LEERUITKOMS 1: WETENSKAPLIKE ONDERSOEK

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.

Assesseringstandaarde

Dis duidelik wanneer die leerder

1.1 ondersoek beplan;

1.2 ondersoek uitvoer en data versamel;

1.3 data evalueer en bevindinge kommunikeer.

LEERUITKOMS 2: KONSTRUKSIE VAN WETENSKAPKENNIS Die leerder ken, interpreteer en pas wetenskaplike, tegnologiese en omgewingskennis toe.

Assesseringstandaard

Dis duidelik wanneer die leerder

2.1 betekenisvolle inligting onthou.

LEERUITKOMS 3: WETENSKAP, DIE SAMELEWING EN DIE OMGEWING Die leerder is in staat om begrip van die onderlinge verband tussen wetenskap en tegnologie, die samelewing en die omgewing te toon.

Assesseringstandaard

Dis duidelik wanneer die leerder

3.1 wetenskap en tegnologie in die konteks van geskiedenis en inheemse kennis verstaan.

Memorandum

Mnr. Breinsel:

  • Wat is die regte woord vir ‘n weervoorspeller?Antwoord:
  • meteoroloog

Bestudeer die sleutel en skryf die korrekte benamings neer: sien sleutel op kaart.

Mnr. Breinsel:

  • Vind uit wat die volgende beteken:
  • ‘n hoogdruk
  • ‘n laagdruk
  • ‘n front

Hoogdruk: wanneer daar ‘n hoogdrukstelsel oor die land beweeg, beteken dit gewoonlik dat dit ‘n mooi dag gaan wees. Koue lug beweeg uit- en afwaarts en word warmer.

Laagdruk: ‘n laagdrukstelsel bring gewoonlik reën en bewolkte toestande. Koue lug beweeg in- en opwaarts en word koud.

Front: ons sien dikwels ‘n front na die land beweeg. Dit is maar net die rigting waarin warm of koue lug beweeg.

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 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11097/1.1
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