The Heart
The heart is the most important part of the body. It is the center
of the life. However, the heart is the only as big as a closed hand.
The heart is
a muscle and it beats about seventy times per minutes throughout a person’s
life.
The heart
pumps blood from your heart to all parts of the body. The heart is made up of
four chambers or small “rooms”. The top chambers are called the right and left
auricles and the bottom chambers are the right and left ventricles.
When blood enters the heart, it is in dark reddish color because
it contains carbon dioxide. The blood enters the right auricle and then the
right ventricle. When the heart contracts, it forces the blood to the lungs
where the blood receives the oxygen. It then goes to the left auricle. The
heart contracts again, and the blood goes to the left ventricle and is then
forced out into the body. The blood gathers carbon dioxide and returns to the
heart, and the process begins again.
Television
Television or TV,
is one of the humanity’s most important means of communication. It brings
pictures and sounds from around the world into millions of homes.
People with a television set can sit in their house and watch the
president make a speech or visit a foreign country. They can see a war being
fought, and they can watch government leaders try to bring about peace. Through
television, viewers at home can see and learn about people, places, and things
in far away lands. Television even takes viewers out of this world as the
astronauts explore the outer space.
In addition to all these things, television brings its viewers a
steady stream of programs that are designed to entertain. In fact, TV provides
any more entertainment programs than any other kinds of information media. The
programs include action-packed dramas, light comedies, soap operas, sporting
events, cartoons, quizzes, variety shows and motion pictures.
Computer
A computer is an electronic device which is used to store, process
and analyze data or to solve mathematical calculations. A computer unit usually
consists of four main parts. The first one is the CPU. CPU stands for Central
Processing Unit. This is considered as the brain of the computer as it analyzes
and processes all the data entered.
The second one is the Keyboard. We use keyboard to feed the
computer unit with information and commands. It looks just like an ordinary
typewriter. Each button represents different code.
The third part is the disk drive. It is placed in the CPU. A
computer unit usually has two disk drives. A disk drive functions as a device
that reads all the data from a diskette.
The fourth part is the monitor. It looks like a television set. It
enables us to look at the data we feed into the computer. All the data is
displayed on the screen.
A part from these four main parts, we still need more additional
parts, such as mouse and a printer. A mouse is used to make it easier to run a
command. A printer presents output in printed form. Another thing that we need
to operate a computer is diskette. It may contain a computer program, a game,
or word processing program. It may also contain sets of data. All the data that
we create is stored or is recorded into a diskette as a file.
Elephant
Elephant is a mammal. It is a big and
wild animal. It has two large ears and small eyes. It also has four big legs,
small tail and a trunk. An elephant usually has a pair of ivory especially when
it has already grown up.
Elephant belongs to herbivore. It eats
twig of leaves and grass. It lives in group. It also a protective animal,
whenever it has a baby, the mother never lets the baby away. She always cares
of the baby for many years. She will protect the baby from other wild animals.
Whenever she felt in danger, she will make a certain sound to warn the baby and
other members of group.
Elephant likes water. It likes soaking
in mud. It can spend a lot of time there. It likes showering its body. Elephant
lives in tropical forest. It is easy to find it in Africa, Vietnam even Indonesia
What is Rainbow?
A rainbow is caused by sunlight being refracted, or “bent”, and
reflected back toward the observer by raindrops. By this refraction, sunlight
is broken up into its comonent colours-red, orange, yellow, green, blue, indigo
and violet-the colours of the rainbow from the outside to the inside of the
arc. Rain bows always from on the side of the server opposite the sun
Mankind always seems to have regarded rainbows as good news. In
the Bibble story of Noah’s Ark
What Is Star?
Look up at the sky on aclear, moonless night and the twinkling
points of light you can see scattered across the heavens are stars. To the
naked eye about 3,000 stars are visible from Earth. With the aid of intruments,
scientists can see about 1,500 million stars!
Stars are formed when the gigantic clouds of gas and dust in space
collapse inwards under the pull of their own gravity. When this happens, the
pressure at the core becomes so great that the heat releases energy which keep
a star burning brightly for most of its life, 10,000 million years. Our sun is
a typical star. Throughout the vastness of space, stars are gathered in
galaxies numbering million of stars. The universe contains millions of
galaxies! We give names to constellations, recognisable clusters of stars, like
Orion, the Plogh, and Cassiopeia.
Sharks
Sharks are flesh-eating fish so one cn easily understand why there
are the most feared by all human swimmers.
The giant white sharks are very fast and ferocious and attack
anything that moves. The blue sharks and tiger sharks are also deadly killers.
Different fom them are the wild sharks which are the largest of
all fish. They eat small animals and plants. The porbeagle shark (above) eats
mackarel, haddock, cod and dogfish. These fishes are all swallowed whole.
The probeagle is about hree metre in length. It is a great nuisnce
so far as fisherman are concerned for sometimes probeagle are cought in nets
that are already partly filled with other fish. A porbeagle so cought will
promptly break through the net so releasing the rest of the catch. The
probeagle is easily recognised by its pointed snout.
Snakes
Snakes ARE reptiles that are cold-blooded-creatures. They belong
to the same group as lizard (the scaled group, Squamata) but from a sub-group
of their own (Serpentes).
Snakes HAVE two legs but a long time ago they had claws to help
them slither along. Snakes ARE not slimy. There are covered in scales which are
just bumps on the skin. Their skin IS hard and glosy to reduce frinction as the
snakes SLITHER along the ground.
Snakes often SUNBAKE on rocks in the warm weather. This is because
snakes ARE cold-blooded and they NEED the sun’s warmth to heat their body up.
Most snakes LIVE in the country. Some types of snakes live in TREES, some LIVE
in water, but most live on the GROUND in deserted rabbit burrows, in thick,
long grass and in old logs. A snake’s diet usually consists of frogs, lizards,
and mice and other snakes. The anaconda can EAT small crocodiles and even wild
boars.
Many snakes PROTECT themselves with their fangs. Boa constrictors
can give you a bear hug which is so powerful it can crush every single bone in
your body. Some snakes are protected by scarring their enemies away like the
Cobra. The flying snakes GLIDE away from danger. Their ribs SPREAD apart and
the skin STRECHES out. Its technique is just like the sugar glider’s
What is a Kangaroo?
A kangaroo is an animal FOUND in
Australia , although it has a
smaller relative, called a wallaby, which LIVE in the Australian
Island of Tasmania
and also in New Guinea
Kangaroos EAT
GRASS and plants. They have SHORT front legs, but very long, and very strong
back LEGS and a tail. These they use for sitting up on and for JUMPING.
Kangaroos have been known to make forward jumps of over eight meters, and LEAP across fences more than three
meters high. They can also run at SPEED of over 45 kilometers per hour.
The largest
kangaroos are the Great Kangaroo and the RED KANGAROO. Adults grow to a length
of 1.60 meters and weigh OVER 90 kilos.
Kangaroos ARE
marsupials. This means that the MALE KANGAROO has an external pouch on the
front of her body. A BABY KANGAROO is very tiny when it is born, and it crawls
at once into this POUCH where it spends its first five months of life.
Leopard
This is a
leopard, a big cat with bright yellow color and black spots. Those black spots
are nearly of the same size from its nose to its tail. It is about six to seven
and a half feet long. People also call this animal panther.
Although it
is a big animal, its ears are quite small. However, it has a long tail and it
runs very fast. It jumps very well too. That is why it is good at chasing and
catching its preys.
To catch its
prey, it often hides on a tree and waits until small animals come near the
tree, the leopard jumps down and kills the animal. A leopard eats all smaller
animals, but it likes dogs best.
Whales
Whales
are sea living mammals. They,
therefore, breathe air but cannot survive
on land. Some species are very large
indeed and the blue whales, which can exceed 30 m in length, is the largest animal to have lived on earth.
Superficially, the whale looks
rather like fish but they are important
differences in the external structure:
its tail consists of pair of broad, flat, horizontal paddles (the tail of a fish is vertical) and it has a single nostril on top of each large,
broad head. The skin is smooth and shiny and beneath it layer of fat
(blubber). This is up to 30 cm in thickness and serves to conserve heat and body fluids
Duckbills
Duckbills
live in streams, rivers, and occasionally in lakes. The females usually dig
long, winding burrows in the bank of rivers or stream. The burrows are blocked
with earth in several places as fortification against intruders and flooding.
At the end of the burrow, the female constructs a bed of weeds, leaves and
grass, which it uses as a nest for the eggs and young and for a retreat. The
male is excluded from the nesting burrow.
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