Explain what makes you curious!

What is explanation text???

An explanation text aims to describe a process of how things happened or to explain a theory, phenomenon, definition, ideology, and somethings that connects with nature science. An explanation text also can be used to describe or to define the function of things or tools.
It is always answer the questions of how or why things happened.
It’s usualy explained with simple present tense and passive voice.

Silkworms live for only two or three days after laying eggs. About 36,000 to 50,000 eggs are laid, and these are carefully stored at the silkyworm farm until they are ready to hatch. The eggs hatch into caterpillars, which feed on mulberry leaves. Soon, the caterpillars are ready to spin their cocoons. Not all caterpillars can spin silk cocoons. Only the caterpillars of a silkworm moth known as ‘Bombyx mori’ can do such spinning.
These caterpillars has special glands with secrete liquid silk through its lower lips. The liquid produced after later hardens to form fine strands. The caterpillars makes its cocoons using these strands. The threads on the outside of the cocoons are rough, while those inside are soft and smooth.
Some fully-spun cocoons are heated. This kills the pupa inside. The cocoons are then put into hot water to loosen the fine threads. Finally, these threads are reeled off the cocoons.
The length of unbroken thread produced by a single cocoon measures about one-and-a half kilometers. Being twisted together several of these threads make single woven materials.

A Brief Summary of Speech Production

Speech production is made possible by the specialized movements of our vocal organs that generate speech sounds waves.
Like all sound production, speech production requires a source of energy. The source of energy for speech production is the steady stream of air that comes from the lungs as we exhale. When we breath normally, the air stream is inaudible. To become audible, the air stream must vibrate rapidly. The vocal cords cause the air stream to vibrate.
As we talk, the vocal cords open and close rapidly, chopping up the steady air stream into a series of puffs. These puffs are heard as a buzz. But this buzz is still not speech.
To produce speech sound, the vocal tract musut change shape. During speech we continually alter the shape of the vocal tract by moving the tongue and lips, etc. These movements change the accoustic properties of the vocal text, which in turn produce the different sounds of speech.

Submarine work is implementing of Archimedes Law. While dove, the air in ballast tank is issued through slick hole and is substituted by water. This thing make submarine type mass is greater so that it can sink.
On the contrary, to ascend surface, the accentual air which is brought by submarine is pumped into ballast tank so that the water can come out. Type mass of submarine become smaller so that the submarine can get to the surface.

[justify]Respiration at Fish

Fish is animal that just can live in water. Fish can breathe by use fish gills on the left side and head right. Fish gills has smooth ply that contain bloods capillary adit.
At the some of fish, the gill cavity has expansion on the top that mention is labyrinth. Labyrinth used for keep air so that the fish can live in water lack for oxygen. When the fish is underwater, mouth and close the fish gill always open and close.
Tying of oxygen and release of karbondioksida happen in fish gill. Oxygen in blood circulated to all part of body by artery. After that, oxygen at taking by body cell, the blood flocks at vein for return to hearth. Then blood at pump again to fish gill by hearth.


Staysi Wullur
XI IA 1

Why can blood outward stop by itself …?

In blood, available slivers blood or trombosit. Trombosit used to process coagulating blood. In trombosit available enzyme is trombokinase. If the blood is outward because wound, the trombosit will broken. Enzyme trombokinase will outward of trombosit. Effect calcium ion influence in blood, Enzyme trombokinase can change protrom to be thrombin.
Thrombin can change blood protein fibrinogen to be fibrin yarn. Yarn of fibrin cause closed wound so that don’t issue blood continually. Protrombin is protein compound that at form in heart. Formation this compound at regards by vitamin K. The people lack for vitamin K may cause difficulty coagulating blood.


Stephanie emor
XI IA II

Assignment of:
Explanation Text


HEALTHY LIFE STYLE

Healthy body it’s mean releases from pain which is anxious, unwearied, anthusiastic, be not easly tire, and handy.
Healthy body is strong body so can refuse disease, to have healthy body which is:
 Eating the good food so that can result energy.
 Increasing vegetables and fruits eating.
 Avoid sugar and simple carbohydrate.
 Eating fat that brotherly to energy
 Set sport

You can througt every day with a good condition when you have a healthy life style, wont badding to wreck your life so makes oxygen distribution in inhibited body and bothers food absorption also exhaustive body invulnerability system.
Does it if you want to have a healthy life style.


Rebeca Palit
XI IA 1

How To Process The Urine?


Urine is residuary substance-substance that at issues through ekskresi is process. In kidney happen the process. First, filtrasi is residuary substance winnow process metabolite that cans be toxicant for body.

Second, reabsorpsi is absoption process is back filtrate glomerulus who is still contain substance-substance good for body. Then, augmentasi is substances outgoing process residuary substance-substance that don’t be required again by body.







By : Maria F Kelo
Natural Science 1

Why can man issue voice?


In human body exists parts that have alone functions. On throat part, correct it at larynx, available vocal fold which can result voice. Vocal fold at shaped by elastic ligament that can chatter while air passes it so results voice. Low high it tone of voice, heavy duty frail it voice, all rule at larynx.
If larynx is troubled, there fore will ascendant on voice. Other heard voice and can just which experience that trouble, can’t issue voice. So that, don’t one cause troublesome larynx because that thing will only make man difficulty to issues voice.




Ireine Tangian
XI IA 2

How Does the Rainbow Happen?

The rainbow happens when the sunlight passing through the drops of rainwater. The light has turned or refracted and goes to the middle of the drop of water, which separate the white radiance into all of the spectrum colors – red, orange, yellow, green, blue, purple, violet. Then, the separated colors reflecting to the backside of the dropped water, and make it more separated when its leave the water. As the result, the radiance or light appears bended and become a rainbow curve. The shortest light wave, like violate, be found in the inside of the rainbow curve and the longest one like red be found in the outside of the rainbow.

Sometimes, there’s also appeared the second rainbow on top of the main rainbow. But the colors in the second rainbow are in the overcast condition, because the light has been turned or refracted by the drops of rainwater more than one times. The composition colors in the second rainbow are the opposite of the colors in the main rainbow, the red color is in the inside and the violet is in the outside of the rainbow curve. The colors of the second rainbow will never become as bright as the main rainbow, because each time the light refracted, there some of it disappear.

PRIMA MAWITJERE
Taken an translated from:
Seri Kegiatan Sains “Cuaca dan Iklim”,
Chris Woodford

THE FORMING OF THE OIL,NATURAL GAS AND COAL
The oil, natural gas and coal is the fuels that came from decaydecation from the riwens of organism back fossil fuel. Earth oil it forming from the corpses from oceans, plams and animals that die 150 milion years ago. The remains of organism that remain in oceans floor and then covered by mud. And the covered mud began to form a rock because the influence of the top pressure and temperature the anaerob bacteria decomposite the remaining corpses and change its form to oil and gas.
The progress of the forming of the oil and gas that formed through in the rucics that have breathing holes like the water in the rocks and migrated to another place or another country, that concentrating if blocked by a proof layer even so that earth oil and natural gas forming in ocean but many oil resources are in lands thats happen because the movement of earth skin, so sun of oceans form a land.
And there is coat that believed come from trees and fern that lived 3 milion years ago and buried maybe because the earth awake and volcano eruption.

Created by:
Christel Sambou

The Global Warming
What do you feel Indonesia and our earth in 50 year later?
Prediction to said in the future for about 2050 year later the climate in this world will be changed!! . The first global warming is increasing of the earth’s temperature because the “gas” we can call green house can increasing so the temperature will be hotter. Allthough to prevent the sun’s heat from escaping the atmosphere so that the earth still warm. When the gas consentration increasing and passed the normally the earth will be hotter and the temperature can not be normal.
These was all happened because the use of a fuel by industry, transportation, and other can make a CO2 . Also because the forest burning, and the using of chemical instrument on the ground can make the CO2 on the ground move to the air.
This kind of gas absorb a heat, so in a massive they can increase the temperature. In the end, will make us difficult to find a fresh and clean water, more natural disaster will happen, vanish of some species, the melt of the pole’s ice, and many more dissease. Not just that the flora and the fauna in this world can extinct.

WHY THE HYDROGEN IN THE ATMOSPHERE IS IN LITTLE AMOUNTS?

Hydrogen is the most many unsure in this world and must be many in our atmosphere in the early stop of the earth evolution. Until now our atmosphere that compose by nitrogen and oxygen. The hydrogen in the early stop if early evolution is escaped to the outside sky.
How the hydrogen can escaped to the outside sky? But another thing can’t escaped from the earth gravitate because the gravitate pull them into the center of the earth. The solution is in the concept of escaping speed. If a thing moved away from the earth with constant speed or more than escaping speed, it will leave the earth and never back again.

By :
Franklin Korua

EXPLENATOIN TEXT
Raining Process
Water is very important in our live. Water keeps moving from place to place. Most water is in the oceans. When the water become hot its change to gas. And the gas raises up into the water, and change in to the clouds. After that, water falls from the clouds. That is rain.
Some rain falls into the oceans, other rain falls on the land. It rains on fields, forests, and cities. Rain that falls on the land runs downhill. It flows into streams and rivers. The rivers carry the water back to the oceans. Then, the ocean water evaporates again. So the water keeps on moving, over and over. It goes from oceans up to the skies. It goes from the skies down to the land. And it goes from the land to the oceans again.

By : Hermanus Rondonuwu

The Rain Process


2/3 part of our earth contain water
and the least is land. Water contains in many place. The water saved in many place, will evaporated with sun heat, then the water gas will condent or density which in the end be the clouds.
The clouds will move to different place, with wind blowing vertical or horizontal. Vertical wind movement caused clouds density. The wind movement cause the clouds going pumped. Then, clouds reach atmosphere with more low temperature. In atmosphere, water and ice particle formed. So, wind can’t defense the cloud which contain water will presitiped (rain,snow) and then fall to earth.

Eclipse is a natural event that split in two parts, the first is sun eclipse and the second is moon eclipse, this event rarely happen in one year, at least in every year that can be 2 or 3 eclipse.

The moon eclipse is happen when the moon, the earth and the sun is in a row. And then the moon looks red because the sunlight is refracted in the side of the earth before it reaches the moon.

The sun eclipse is happen when the earth, the moon and the sun is in a row. And then the sun looks disappeared slowly because the moon is began to cover the sunlight. The sun eclipse never more than 7.41 second because the rotation speed of the earth is very high.

There some kinds type of the sun eclipse. The first is totally sun eclipse, second half sun eclipse, third ring sun eclipse, and the fourth is blur sun eclipse.

Frog Metamorphosis
Frog metamorphosis, like complete insect metamorphosis, is defined as a four stage process. However, the stages are different. They go from eggs, to tadpoles to frog lets to adults.
The process is seasonal, usually starting with early spring mating. Some species also produce a summer brood. Females typically lay large jelly-like eggs masses in the nearby water. Depending on the species, the eggs can hatch into tadpoles in a time span ranging anywhere from a couple of days to a couple of weeks.
Tadpole development, the most visible part of the process, takes place entirely in the water. Again, depending on the species, this stage can last anywhere from about one to four months.
At this point in time, they breath through gills. Tadpoles move from a legless to leg stage, with the back legs the first to grow. Legs help tadpole propulsion in the water, enabling it to feed better and continue to grow. Different tadpole species have different dietary needs, however most eat algae. The second picture shows a tadpole with its back legs. Eventually, tadpoles begin to develop front legs and lungs to help with life on land.
Once developed, tadpoles, now commonly called frog lets, begin their first investigations of land. At this point in time, as the picture shows, they retain their tails.
In a short time, frog lets lose their tails and move to land.

Leukemia or blood cancer is a group diseased neoplastik that medley, marked by manifolding ala not normal or transformasi maligna of patronising cell cell blood at limfoid's bone marrow and network. Normal cell cell in stunted bone marrow by cell not normal or abnormal. This abnormal cell outward of marrow and gets to be found in perifer's blood or edge blood. Leukemia cell regards hematopoiesis or pemebentukan's process normal blood cell and patient body immunity.

Leukimia's diseased phenomena demulcent which is other disease as feverish as is not tall, dogtired, cold sweat, belly frequenting to perceive not delicate and at odd moments available also spleen amplification. Kadangkala also happens appetite loss and body weight menurun. this phenomena happens up to 3 until 6 months.

The gas emission is the most effected air pollution. The danger pollutant, is monoxide carbon (CO), NO, and NO2. Act for prevent pollution which developing is catalic converter to change these gases to safe gas before go to the fresh air. The used catalic is metal oxide like platina.


The catalic assembled in knalpot through with emission gas. Catalic have catalystis some reaction dangerous gas into safe gas. CO2, H2o and N2 isn't toxic gases. So emission become cleaner and environment become friendly.

Living Creature Metabolism divided of two parts; Catabolism and Anabolism. Photosynthesis in Anabolism System.
Photosynthesis happened of two process; Light Reaction and Dark Reaction forming The Carbohydrates.
Photosynthesis base of the word of photo that is means light and synthesis that is means to pile up. So, Photosynthesis means to pile up the organic bonds of the organic bonds with sunlight which help it process. Photosynthesis needs the organic bonds, those are CO2 and H2O. Photosynthesis materials are chloroplasts, sunlight, and chlorophyll.
If you look at some cells under the microscope, you will see lots of around, green structures called chloroplast. Green plants are able to make their own food from simple row materials around them. This process called photosynthesis.
Energy is needed for photosynthesis. This energy comes from sunlight. Chlorophyll is a substance that absorbs sunlight. Chloroplast contains lots of chlorophyll. During photosynthesis this energy from sunlight becomes converted into the chemical bond energy in the sugars.
Once a seed germinates, it begins to grow into an adult plant. A plant’s growth and final form are determined by many factors. External factors can cause two plants with the same genetic make up to turn out quite differently. External factors that influence plant growth include temperature, intensity of light, and amount of rainfall.

“How is mother milk water formed?”


Mother milk water so necessary for developing and baby growth. Mother milk water contains vitamin, water, mineral, lactose, protein, casein, fat, and linoleum’s acid. Mother milk water functions to meet the need baby nutrient and protects it of diseased seed attack.

Formation mother milk water because marks sense mammary gland developing regarded by estrogen's hormone and progesterone. up to pregnancy, titrate prolaktin will increase. It will beget estrogen's concentration and progesterone will increase too. Hormone estrogen will increase channels in mammary gland, meanwhile progesterone will regard lobules developing milk water gland so mother milk water is formed.



By: Pingkan Rumende (XI Science 1)

While are sunlight pass water drip, it makes lee way as when via glass prism. So at deep water drip, we have gotten color that variably spread a long of single-sided to another water drip flank. Severally of light color it then is bounced of far flank on water drip, back to and sticking out again of water drip.
Outward light returns from water drip to aim different one, cling to its color. And while we see this color on rainbow, we will see it graded with red at uppermost and purple at lowermost rainbow.
Rainbow just gets to be seen while rain coincides with shining the sun, but of nurginal one at variance with the observer. Position we shall betwixt lie the sun and water drip with solar behind we. The sun, our eye and center rainbow bow shall lie deep one straight line.

The largest member of the cat family is the tiger. Tigers have dark stripes. A full-grown tigers weighs 135 to 190 kilograms (about 300 to 400 pounds).
A female tiger often has two or three cubs at one time. Sometimes, she gives birth to as many as six cubs. The female tiger teaches the cubs to hunt. The cubs need to know how to do this. Otherwise, they cannot hunt for their own food when they get older. By the time a cub is about 2 years old,it can live on its own.
The tiger’s stripes help it to hide from its enemies. Most tigers stay away from people. They stay in the shadows of a forest. Tigers hunt large animals for food. Tigers hunt Antelope, wild pigs, oxen, and baby elephants. Tigers eat smaller animals, too.

By ; CHARLES PONTOH

How the forming of urine

In filtration water and small molecules enter from capillary to entrance at nefron though glomerulus. Glomerulus function for blood strain. The blood will reabsorted In this process water glucose, amino acid and other ions will returns to the blood.

In sekresi process, The blood will return to filtrate. Sekresi function for neutralize the toxic in the blood. An, the last process is ekresi. Urine result from filtration, reabsorpsi, and sekresi will to leave in through ureter.