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Natural sciences

Grade 4

Planet earth and the universe

Module 48

Life at the north and south poles


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.


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 is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
yes that's correct
I think
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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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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