Explanation Text by Gita Nurfalah https://padlet.com/gitanurf/8m9b1w3qwm66 Write your explanation text here en-us 2018-09-27 07:50:31 UTC 2024-12-19 01:43:24 UTC hello@padlet.com How A Cancer Is Formed aisyahnurhasanah09 https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396685915
 What is cancer? It is actually a group of more than one hundred separate diseases. Most of us are fear from cancer It is reasonable because next to heart disease, cancer is the second leading cause of death.
 
 
 Cancer cells come from normal cells because of mutations of DNA. Those mutations can occur spontaneously. The mutations may be also induced by other factors such as: nuclear and electromagnetic radiation, viruses, bacteria and fungi, parasites, heat, chemicals in the air, water and food, mechanical cell-level injury, free radicals, evolution and ageing of DNA, etc. All such factors can produce mutations that may start cancer.
 
 
 Cancer cells are formed continuously in the organism. It is estimated that there are about 10,000 cancer cells at any given time in a healthy person. Why do some result in macroscopic-level cancers and some do not? First, not all damaged cells can multiply and many of them die quickly. Second, those which potentially divide and form cancer are effectively destroyed by the mechanisms available to the immune system. Therefore cancer develops if the immune system is not working properly or the amount of cells produced is too great for the immune system to eliminate.
 

]]> 2019-10-11 13:54:29 UTC https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396685915 How Discipline is Achieved haninuraeni1606 https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396935202      Discipline is a condition that is formed from a process and a series of behaviors that show the value of obedience, obedience, and order. How is discipline achieved?
School becomes an important place in shaping discipline. Discipline students can grow and develop if the school climate shows discipline. New students will soon adjust to the situation at school. If the school situation is disciplined, students will take discipline. Teachers and principals play an important role in shaping school discipline from designing, implementing and maintaining it.
Self-awareness as a self-understanding that discipline is considered important for self-worth and success. In addition, self-awareness is a very strong motive for the realization of discipline. Retribution and obedience as a step in applying and practicing the rules governing individual behavior. Educational tools to influence, change, foster and shape behavior that is in accordance with the values specified or taught. Punishment is an effort to raise awareness, correct and correct the wrong so that people return to behavior that is in line with expectations.
]]> 2019-10-12 03:06:02 UTC https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396935202 nengyuliani103 https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396935772           How Full Moon Happens
    A full moon is the lunar phase that occurs when the Moon is completely illuminated as seen from the Earth. This occurs when the moon is in opposition to the Sun (when it is on the opposite side of the Earth from the Sun; more precisely, when the ecliptic longitudes of the Sun and Moon differ by 180 degrees).[1] This means that the hemisphere of the Moon that is facing the Earth (the near side) is almost fully illuminated by the Sun and appears round (while the far side is almost completely unilluminated).
Lunar eclipses can occur only at full moon, where the Moon’s orbit allows it to pass through the Earth’s shadow. Lunar eclipses do not occur every month because the Moon usually passes above or below the Earth’s shadow (which is mostly restricted to the ecliptic plane). Lunar eclipses can occur only when the full moon occurs near the two nodes of the orbit, either the ascending or descending node. This causes eclipses to only occur about every 6 months, and often 2 weeks before or after a solar eclipse at new moon at the opposite node.
The time interval between similar lunar phases—the synodic month—averages about 29.53 days. Therefore, in those lunar calendars in which each month begins on the new moon, the full moon falls on either the 14th or 15th of the lunar month. Because calendar months have a whole number of days, lunar months may be either 29 or 30 days long.

]]> 2019-10-12 03:11:58 UTC https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396935772 cucudheasta https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396936112 How A Fuel Light Works
Many cars, motorcycles and other modern vehicles have fuel warning light devices. the warning light is usually red which switches on automatically when the level of fuel in the tank is very low. The warning light gives the driver information about the amount of petrol in the tank. When the light switches on red, it tells the driver that the petrol in the tank is almost empty. Therefore he have to put more fuel into the tank. However do you know how the fuel warning works?

Well this is the way the fuel warning light work and gives the driver information about the accurate amount of the petrol in the tank. When the level of the fuel falls, the float inside the tank moves downwards. When this condition happens, the arm also moves downwards and it make the lever touch an electrical contact. This switches on the fuel light in the car dashboard.

The red light which appears in the fuel panel of the dashboard tells the driver that he needs more petrol for his car. When he pours more petrol into the tank, this condition makes the fuel level rise and it pushes the float upwards. In return it disconnects to the electrical contact and makes the red light switch off.

]]> 2019-10-12 03:16:00 UTC https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396936112 Waves zryrachmalia13 https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396936729
When we are near to the lake or sea, we often see floating water up and down. It is called waves. What Causes Waves?
The winds cause waves on the surface of the ocean (and on lakes). The wind transfers some of its energy to the water, through friction between the air molecules and the water molecules. Stronger winds (like storm surges) cause larger waves. You can make your own miniature waves by blowing across the surface of a pan of water.
Waves of water do not move horizontally, they only move up and down (a wave does not represent a flow of water). You can see a demonstration of this by watching a floating buoy bob up and down with a wave; it does not, however, move horizontally with the wave.
Tsunamis (sometimes called tidal waves) are different from surface waves; they are usually caused by underwater earthquakes, volcanic eruptions, or landslides.
Source:
]]> 2019-10-12 03:23:05 UTC https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396936729 SOLAR ECLIPSE regitamaulani61 https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396937903
Solar eclipses are an accident of nature. They are so spectacular because the Moon and the Sun appear almost the same size. In reality the Sun is much further away then the Moon, but much larger. How does a solar eclipse happen?
The Moon orbits the Earth once a month, and eclipses happen if it lines up exactly with the Earth and the Sun.  Solar eclipses occur at New Moon, when the Moon is between Earth and the Sun. Lunar eclipses occur at Full Moon, when Earth is between the Sun and the Moon. Eclipses do not take place every month because the orbits of the Moon and Earth are tilted at an angle. Most of the time, the line- up is not precise enough for an eclipse. However, there are more eclipses than people are generally aware of:
1. There are at least two eclipses of the Sun each year, though most are partial.
2. There are at least two eclipses of the Moon each year, though a proportion of these are only penumbral, when the Moon is not seen to darken by very much.
3. There can be as many as seven eclipses (solar plus lunar) in any one year. In 1935 there were five solar eclipses – four partial and one annular.
On average, there is a total solar eclipse visible somewhere about every 18 months. However, from any one location on Earth, total eclipses take place on average only once in several hundred years.]]> 2019-10-12 03:35:49 UTC https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396937903 How snow happens aisyahnurhasanah09 https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396938249 The snowfall is always exciting, isn’t it? In the snowfall you can crunch through the snow, make a snowman and play snowballs with your brother. Have you ever wondered how snow is made, though?

Snow occurs when water vapors in the air freeze before they can turn into water. This happens when the temperature in the clouds is very cold. Snowflakes are made up of crystals of ice that have formed around bits of dirt in the air. The snowflakes start out very small and grow. Each snowflake is different and might contain up to 200 crystals.

Nama: Ii Fatmalla
Kelas: XII IPS
]]> 2019-10-12 03:39:32 UTC https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396938249 TORNADO riskaf240 https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396938353
Tornadoes are associated with large (supercell) thunderstorms that often grow to over 40,000 feet. A column of warm humid air will begin to rise very quickly. How Do Tornadoes Form?
1. Air Rotates Because of Wind Shear.
How the column of air begins to rotate is not completely understood by scientists, but one way the rotation appears to happen is when winds at two different altitudes blow at two different speeds creating wind shear. For example, a wind at 1000 feet above the surface might blow at 5mph and a wind at 5000 feet might blow at 25mph. This causes a horizontal rotating column of air.
2. Faster Spin Makes a Funnel Cloud.
If this column gets caught in a supercell updraft, the updraft tightens the spin and it speeds up (much like a skater’s spins faster when arms are pulled close to the body. A funnel cloud is created.
3. The Funnel Rotates and Touches Down.
The rain and hail in the thunderstorm cause the funnel to touch down creating a tornado.]]> 2019-10-12 03:40:56 UTC https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396938353 Making Paper from Wood chips nisaamelia912 https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396939017
(General statement)
Do you know that paper is made from wood? Ya, paper that we use in our daily life is made from wood or tree. The process of making paper from wood is quite long. The process is called wood-chipping. Wood-chipping is a process used to obtain pulp and paper products from forest trees.


(Sequence of explanation)
The wood-chipping process begins when the trees are cut down in a selected area of the forest called a coupe. Next the tops and branches of the trees are cut out and then the logs are taken to the mill. At the mill the bark of the logs is removed and the logs are taken to a chipper which cuts them into small pieces called wood chips. The wood chips are then screened to remove dirt and other impurities. At this stage they are either exported in this form or changed into pulp by chemicals and heat. The pulp is then bleached and the water content is removed.


(Closing)
Finally the pulp is rolled out to make paper
]]> 2019-10-12 03:48:49 UTC https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396939017 How Does A Fan Work? haninuraeni1606 https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396939033

The Fan is an electronic device that everybody use it in their house. People use the fan to make the air in the room cooler, especially in hot day. However ,do you know how a fan works?

An electric fan has an electric motor with some fan blades attached to its rotating shaft. As the motor spins, the fan blades rotate. Each blade is angled a bit, and as the inclined plane of the blade moves through the air, it forces the air ahead of it forward. Each blade does this on a continuous basis, and the result is a moving air stream. The fan is taking air from the area behind itself and blowing it out the front.

The fan generates a movement of air, causing the warm dense air to descend, and the cool dense air to rise, thus creating a feeling of coolness in the air.



Nama:Dea Triyanti
Kelas:XII IPS 

]]> 2019-10-12 03:49:10 UTC https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396939033 Honey haninuraeni1606 https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396939902
Everybody likes honey. Even, it can be a medicine for most deseases. How is Honey Made?
Honeybees use nectar to make honey. Nectar is almost 80% water with some complex sugars. In fact, if you have ever pulled a honeysuckle blossom out of its stem, nectar is the clear liquid that drops from the end of the blossom.
In North America, bees get nectar from flowers like clovers, dandelions, berry bushes and fruit tree blossoms. They use their long, tubelike tongues like straws to suck the nectar out of the flowers and they store it in their “honey stomachs”.
Bees actually have two stomachs, their honey stomach which they use like a nectar backpack and their regular stomach. The honey stomach holds almost 70 mg of nectar and when full, it weighs almost as much as the bee does. Honeybees must visit between 100 and 1500 flowers in order to fill their honeystomachs.

Nama:Opah Afifah
Kelas:XII IPS

]]> 2019-10-12 04:00:01 UTC https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396939902 minamarlina345 https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396940135 Waves
When we are near to the lake or sea, we often see floating water up and down. It is called waves. What Causes Waves?
The winds cause waves on the surface of the ocean (and on lakes). The wind transfers some of its energy to the water, through friction between the air molecules and the water molecules. Stronger winds (like storm surges) cause larger waves. You can make your own miniature waves by blowing across the surface of a pan of water.
Waves of water do not move horizontally, they only move up and down (a wave does not represent a flow of water). You can see a demonstration of this by watching a floating buoy bob up and down with a wave; it does not, however, move horizontally with the wave.
Tsunamis (sometimes called tidal waves) are different from surface waves; they are usually caused by underwater earthquakes, volcanic eruptions, or landslides.]]> 2019-10-12 04:03:33 UTC https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396940135 How Venus Eclipse Happens yanitriyandini https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396940447 On May 16, 2010, people in most regions in the world have seen a very rare natural phenomenon. It was Venus eclipse. It was very rare amazing natural event. It was reported that the Venus eclipse will seen again in the future in 2050. Do you know how this rare Venus eclipse happens?
Well, actually Venus eclipse is like Sun eclipse. Venus eclipses occurs when the position of the earth, moon and Venus is parallel. Venus planet will slowly disappear for a moment because it is covered the surface of the Moon. Venus planet seems to move to the back side of the Moon.
The moon and planets are sharing a similar apparent path in the sky. That is why, it is not unusual for the moon to appear to pass close to Venus. In fact, the moon appears somewhere near it about once a month. However, most people don’t see these events because they are visible in the evening sky only half the time, and then only for a short period after sunset. The apparent closeness varies from month to month as well
]]> 2019-10-12 04:08:04 UTC https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396940447 How Chocolate is Made haninuraeni1606 https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396941004 Have we wondered how we get chocolate from? Well this time we will enter the amazing world of chocolate so we can understand exactly we are eating.

Chocolate starts a tree called cacao tree. This tree grows in equatorial regions, especially in place such as South America, Africa, and Indonesia. The cacao tree produces a fruit about the size of a small pine apple. In side the fruits are the tree’s seeds. They are also known as coco beans.

Next, the beans are fermented for about a week, dried in the sun. After that they are shipped to the chocolate maker. The chocolate maker starts processing by roasting the beans to bring out the flavour. Different beans from different places have different qualities and flavour. So they are often shorted and blended to produce a distinctive mix.

The next process is winnowing. The roasted beans are winnowed to remove the meat nib of the cacao bean from its shell. Then the nibs are blended. The blended nibs are grounded to make it liquid. The liquid is called chocolate liquor. It tastes bitter.

All seeds contain some amount of fat and cacao beans are not different. However, cacao beans are half fat, which is why they ground nibs from liquid. It is pure bitter chocolate.

Nama:Tiara Anggi
Kelas:XII IPS
]]> 2019-10-12 04:15:41 UTC https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396941004 example text examplanation sayyidahasuratazkia https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396941105  
1: How Earthquakes Happen 
Earthquake is one of the most destroying natural disasters. Unluckily it often happens in several regions. Recently a horrible earthquake has shaken West Sumatra. It has brought great damages. Why did it occur? Do you know how an earthquake happens? 
Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves. It make the ground shake. When two blocks of rock or two plates are rubbing against each other, they stick a little. They don’t just slide smoothly. The rocks are still pushing against each other, but not moving. After a while, the rocks break because of all the pressure that’s built up. When the rocks break, the earthquake occurs. 
During the earthquake and afterward, the plates or blocks of rock start moving, and they continue to move until they get stuck again. The spot underground where the rock breaks is called the focus of the earthquake. The place right above the focus is called the epicenter of the earthquake. 
]]> 2019-10-12 04:17:14 UTC https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396941105 contoh examplanation sayyidahasuratazkia https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396941669 How Roman Roads were Built
The information on how roman roads were constructed is to give an exmple of explanation text
The system of roads for mobility has been begun early decades. It was started since the Roman Empire conquered the world. The roads in Roman era were known as the best construction.
The Romans built roads are for the purpose of mobility, especially for the army. Having the best road, the army could march from one place to another. They built the roads as straight as possible, so that the army could take the shortest route.
It is interesting to know how the roads were built, which some of them are still in use today. First, the Romans builders would clear the ground of rocks and trees. Then they dug a trench where the road was to go and filled it with big stones. Next, they put in big stones, pebbles, cement and sand which they packed down to make a firm base. After that, they added another layer of cement mixed with broken tiles. On top of that rough construction, then they put paving stones to make the flat surface. These stones were cut so that they fitted together tightly. As the finishing touch, kerb stones were put at each sides of the road to hold in the paving stones. It was also used to make a channel for the water to run away.
]]> 2019-10-12 04:26:38 UTC https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396941669 " Getting Sleepy " latuljannah123 https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396942438
Scientists know we need sleep, but it is not easy to find that what exactly make us sleepy. Hers is some explanation.
The brain cells called astrocytes fuel the urge to sleep by releasing adenosine, a chemical known to have sleep-inducing effects that can be inhibited by caffeine.
The longer a person or animal is awake, the stronger the urge to sleep becomes. This is known as sleep pressure. Prior studies pointed to adenosine as a trigger for sleep pressure. The chemical accumulates in the brain during waking hours, eventually helping to stimulate the unique patterns of brain activity that occur during sleep.

]]> 2019-10-12 04:38:06 UTC https://padlet.com/gitanurf/8m9b1w3qwm66/wish/396942438 Metamorphosis of mosquitoes anggiagustiani80 https://padlet.com/gitanurf/8m9b1w3qwm66/wish/397247043
No wonder how the perfect mosquito methamorphosis process? Then all ready familiar with the name of the mosquito species.
Many people asume that mosquitoes are ordinary animals and do not really threaten human health. Actually it's wrong,basically mosquitoes are very dangerous animal. It can actually cause dengue fever,Malaria and Chikukunya there are also several stages in the growth,process namely eggs,larvae,pupae and adult mosquitoes. Mosquitoes need human blood as a source of protein and energy,once he lies eggs he looks for a watery place. Then there is wiggler,when it just dripes,the larva larvae is very small it can be observed on the surface of the water. Larvae-larvae in mosquitoes usually range between 8-10 days influenced by environment mental condition. After the larva,the larvae will turn into pupae which develove into large mosquitoes and can fly they are very active and can move quickly through the water then the pupa phase is finished and the top of the mosquito's pupa skin will split.
So,mosquitoes undergo a 4 stage methamorphosis,namely eggs,larvae,pupae,and adult mosquitoes.

]]> 2019-10-14 03:13:20 UTC https://padlet.com/gitanurf/8m9b1w3qwm66/wish/397247043 gitanurf https://padlet.com/gitanurf/8m9b1w3qwm66/wish/401799843 2019-10-24 01:19:20 UTC https://padlet.com/gitanurf/8m9b1w3qwm66/wish/401799843