<< Chapter < Page Chapter >> Page >

Natuurwetenskappe

Graad 4

Die planeet aarde en die heelal

Module 48

Lewe by die suid- en noordpool

Aktiwiteit:

Om te praat oor dierelewe in die poolstreke

[lu 1.2]

Dierelewe in die Noordpool (Arktika)

Daar woon wolwe, bere, eekhorings en voëltjies in die woude, en in die somer migreer die kariboe, wat ‘n Amerikaanse soort rendier is, na die noorde om op wilde plante te leef.

Muskusbeeste lewe op die toendra deur die hele jaar. Hulle beskerm hulleself deur in ‘n sirkel te staan as die wolwe hulle aanval.

In die winter hiberneer die meeste diere. Bere slaap die meeste van die tyd in hulle skuilings en die eekhorings krul hulself op in hulle snoesige gate. Hulle het baie kos in die somer geëet wat nou as energie in hulle liggame gestoor is.

Die walrus woon ook hier en is familie van die robbe. Hulle is soogdiere wat lewendig gebore word en aan hulle mammas drink.

Poolbere is een van die wêreld se grootste diere. Hulle het ‘n laag dik, sagte hare teen die vel en dan ‘n buitenste laag pels met lang hare.

Dierelewe by die Suidpool (Antarktika)

Die albatros, wat een van die grootste seevoëls is, lewe ook by die Suidpool. Hy vlieg oor die see en soek sy kos in die water.

Die grootste dier op aarde, die blouwalvis, lewe in Antarktiese waters. Dit word 30 m lank!

Baie min soorte diere lewe in Antarktika, maar in die somer kom die robbe en pikkewyne soontoe om kleintjies te kry. Die kleintjies is veilig, want daar is redelik min roofdiere wat hulle kan vang.

Baie soorte pikkewyne woon by die Suidpool. Die grootste een is die keiser-pikkewyn wat ongeveer 1 m groot kan word. Hulle kan nie vlieg nie, maar is uitstekende swemmers.

Hoe oorleef die mense in die pole?

Die Inuit-mense lewe in Arktika. Hulle maak vir hulle klere van lekker warm dierevelle om hulleself warm te hou. Hulle woon in klein dorpies waar hulle gedurende die wintermaande ys moet smelt om water te kry.

Hulle jag om kos in die hande te kry en woon in yshutte wat igloes genoem word. Hulle vorm ysblokke tot ‘n koepel en vul die openinge met sneeu.

‘n Ander groep mense, wat die Saami genoem word, woon in Lapland. Hulle is bekend daarvoor dat hulle rendiere aanhou vir melk, vleis en pels. Hulle hou daarvan om tradisionele klere te dra wanneer hulle toeriste op sleeritte neem.

Die mense werk vandag in fabrieke en woon in huise wat van klip of hout gemaak is. Hulle dra moderne klere en ry in sneeumobiele rond.

Skryf ‘n paragrafie van 150 woorde oor hoe diere aangepas het om in die poolstreke te kan woon.

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.

Assessering

Dis duidelik wanneer die leerder

1.2 ondersoek uitvoer en data versamel.

Questions & Answers

What is inflation
Bright Reply
a general and ongoing rise in the level of prices in an economy
AI-Robot
What are the factors that affect demand for a commodity
Florence Reply
price
Kenu
differentiate between demand and supply giving examples
Lambiv Reply
differentiated between demand and supply using examples
Lambiv
what is labour ?
Lambiv
how will I do?
Venny Reply
how is the graph works?I don't fully understand
Rezat Reply
information
Eliyee
devaluation
Eliyee
t
WARKISA
hi guys good evening to all
Lambiv
multiple choice question
Aster Reply
appreciation
Eliyee
explain perfect market
Lindiwe Reply
In economics, a perfect market refers to a theoretical construct where all participants have perfect information, goods are homogenous, there are no barriers to entry or exit, and prices are determined solely by supply and demand. It's an idealized model used for analysis,
Ezea
What is ceteris paribus?
Shukri Reply
other things being equal
AI-Robot
When MP₁ becomes negative, TP start to decline. Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 • Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of lab
Kelo
Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 • Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of labour (APL) and marginal product of labour (MPL)
Kelo
yes,thank you
Shukri
Can I ask you other question?
Shukri
what is monopoly mean?
Habtamu Reply
What is different between quantity demand and demand?
Shukri Reply
Quantity demanded refers to the specific amount of a good or service that consumers are willing and able to purchase at a give price and within a specific time period. Demand, on the other hand, is a broader concept that encompasses the entire relationship between price and quantity demanded
Ezea
ok
Shukri
how do you save a country economic situation when it's falling apart
Lilia Reply
what is the difference between economic growth and development
Fiker Reply
Economic growth as an increase in the production and consumption of goods and services within an economy.but Economic development as a broader concept that encompasses not only economic growth but also social & human well being.
Shukri
production function means
Jabir
What do you think is more important to focus on when considering inequality ?
Abdisa Reply
any question about economics?
Awais Reply
sir...I just want to ask one question... Define the term contract curve? if you are free please help me to find this answer 🙏
Asui
it is a curve that we get after connecting the pareto optimal combinations of two consumers after their mutually beneficial trade offs
Awais
thank you so much 👍 sir
Asui
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities, where neither p
Cornelius
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities,
Cornelius
Suppose a consumer consuming two commodities X and Y has The following utility function u=X0.4 Y0.6. If the price of the X and Y are 2 and 3 respectively and income Constraint is birr 50. A,Calculate quantities of x and y which maximize utility. B,Calculate value of Lagrange multiplier. C,Calculate quantities of X and Y consumed with a given price. D,alculate optimum level of output .
Feyisa Reply
Answer
Feyisa
c
Jabir
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get Jobilize Job Search Mobile App in your pocket Now!

Get it on Google Play Download on the App Store Now




Source:  OpenStax, Natuurwetenskappe graad 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11097/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Natuurwetenskappe graad 4' conversation and receive update notifications?

Ask