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Natural sciences

Grade 4

Planet earth and the universe

Module 48

Life at the north and south poles

Activity:

Talking about life in the polar regions

[lo 1.2]

Animal life at the north pole (the arctic)

Wolves, bears, squirrels and small birds live in the forests and in the summer the caribou, which is a sort of American reindeer, migrates to the north where it lives off wild plants.

Musk oxen live off the tundra throughout the year. They defend themselves from attacking wolves by standing in a tight circle.

In the winter most of the animals hibernate. Bears sleep in their lairs for most of the time and the squirrels curl up in their snug holes. They eat sufficient amounts of food in the summer to provide their bodies with energy through the winter.

Walruses also live here. They are family of the seals. They are mammals that are born live and drink from their mothers.

Polar bears are among the largest animals in the world. They have a thick, soft layer of hair against the skin and longer hair that forms a layer of fur over it.

Animal life at the south pole (antarctica):

The albatross is one of the largest of all the seabirds, and also lives at the South Pole. These birds fly over the sea looking for food in the water.

The largest animal in the world, the blue whale, lives in the waters of Antarctica. It grows to a length of 30 metres.

Very few types of animals live in Antarctica, but in the summer months seals and penguins go there to breed. The young are safe because there are relatively few predators to catch them.

Many different kinds of penguins live at the South Pole. The largest is the emperor penguin that can grow up to one metre in height. These birds cannot fly but they do swim very well.

How do people survive at the poles?

The Inuit people live in the Arctic region. They keep warm by wearing clothes made of animal skins. They live in small villages where it is necessary to melt ice to obtain water in winter.

They hunt to obtain food and live in ice huts called igloos. They build circles of ice blocks on top of each other, making the circles smaller and smaller until they form a dome. The spaces in between the blocks are filled with snow.

Another group of people, the Saami, lives in Lapland. They are well known for keeping reindeer for milk, meat and fur. They enjoy wearing traditional clothes when taking tourists for rides on snow sleds.

But these people work in factories nowadays and live in houses made from stone and wood. They wear modern clothes and ride around on snowmobiles.

Write a paragraph of 150 words on how animals have adapted to living in Polar Regions.

Assessment

LEARNING OUTCOME 1 : SCIENTIFIC INVESTIGATIONS The learner will be able to act confidently on curiosity about natural phenomena, and to investigate relationships and solve problems in scientific, technological and environmental contexts.

Assessment Standard

We know this when the learner

1.2 leads investigations and collects data.

Questions & Answers

What are the factors that affect demand for a commodity
Florence Reply
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
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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
the market for lemon has 10 potential consumers, each having an individual demand curve p=101-10Qi, where p is price in dollar's per cup and Qi is the number of cups demanded per week by the i th consumer.Find the market demand curve using algebra. Draw an individual demand curve and the market dema
Gsbwnw Reply
suppose the production function is given by ( L, K)=L¼K¾.assuming capital is fixed find APL and MPL. consider the following short run production function:Q=6L²-0.4L³ a) find the value of L that maximizes output b)find the value of L that maximizes marginal product
Abdureman
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Source:  OpenStax, Natural sciences grade 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11096/1.1
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