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Water Cycle

The water cycle has four stages: evaporation, condensation, precipitation, and storage. Water on Earth gets stored in oceans, lakes, rivers, ice, and even underground. The oceans store the majority of this water.

EVAPORATION: Water goes from storage into the atmosphere (the air that surrounds Earth) by a process called evaporation. When water evaporates, it changes from a liquid into an invisible gas. The gas is called water vapour. Water vapour goes up into the atmosphere.

CONDENSATION: As the water vapour rises, it becomes cool and condenses (turn into liquid again) to form tiny droplets which can be seen as cloud.

PRECIPITATION: Water returns to Earth as precipitation—rain, snow, or other moisture. Precipitation requires ice or liquid water. When the ice crystals or drops of water in a cloud get heavy enough, they fall to Earth as precipitation. Rain, snow, sleet, and hail are all forms of precipitation. Most precipitation falls into the oceans and goes right back into storage.

STORAGE: Water from land flows into streams. Streams flow down mountains. Streams join together to make rivers and eventually the water flows into storage in the ocean. Then the water cycle starts all over again.

Contoh Explanation 5

How is a Kite Flying?


A kite is an object which is made from a light material stretched over a frame. Due to its light material a kite will lift off the ground and fly when it is tilted into the wind.
A kite is uses wind to make it fly because it is heavier than air.
When wind travels over the surface of the kite, it is split into two streams of air. One stream of the air goes over the kite while the second stream goes under the kite.
The upper stream creates an area of low pressure above the kite. The lower stream hits the kite at a shallow angle and creates an area of high pressure.
The high pressure area has a pushing effect while the low pressure area has a pulling effect. The combination of push and pull can creates enough force to lift the kite into the air.
Kites have been known for thousand of years. They are used for military or scientific purposes. Todays kites are much used for leisure and competition.

Contoh Explanation 4

Human Rights for All


Human rights are rights inherent to all human beings, whatever our nationality, place of residence, sex, national or ethnic origin, colour, religion, language, or any other status. We are all equally entitled to our human rights without discrimination. These rights are all interrelated, interdependent and indivisible.

Universal human rights are often expressed and guaranteed by law, in the form of treaties, customary international law, general principles and other sources of international law. International human rights law lays down obligation of Governments to act to certain ways or to refrain from certain acts, in other to promote and protect human rights and fundamental freedoms of individuals or groups.

It has been over 50 years since the United Nation (UN) Universal declaration of human rights was signed by most governments in the world and yet the abuses continue to grow.

Freedom of speech and Human Rights are taken for granted in the west, but recent years have seen conditions deteriorate around the world. As early as 1997 for example, Human Rights conditions were reported to remain unchanged compared to previous years, or in some countries, actually worsen, around the world.

As the “New World Order” marched on towards the new century it did not look as bright and cheerful for most people as we would have imagined, or hoped, it to be.

In its 2004 report noted the set back for international values of human rights:
Violence by armed groups and increasing violations by governments have combined to produce the most sustained attack on human rights and international humanitarian law in 50 years. This was leasing to a world of growing mistrust, fear and division.

“Amnesty International strongly condemned armed groups responsible for atrocities [representing] a significant new thread to international justice..
But it also frightening that the principles of international law and the tools of multilateral action which could protect us from these attacks are being undermined, marginalized or destroyed by powerful government, ”said Irene Khan [Secretary General of Amnesty International].

“government are losing their moral compass, sacrificing the global values of human rights in a blind pursuit of security. This failure of leadership is a dangerous concession to armed groups”

“while governments have been obsessed with the tread of weapons of mass destruction in iraq, they have allowed the real weapons mass destruction—injustice and impunity, poverty, discrimination and racism, the uncontrolled trade in small arms, violence against women and abuse of children –to go unaddressed,” said Irene Khan.

Contoh Explanation 3

Tsunami


The term of “tsunami” comes from the Japanese which means harbour ("tsu") and wave ("nami"). A tsunamigk is a series of waves generated when water in a lake or the sea is rapidly displaced on a massive scale.

A tsunami can be generated when the sea floor abruptly deforms and vertically displaces the overlying water. Such large vertical movements of the earth's crust can occur at plate boundaries.

Subduction of earthquakes are particularly effective in generating tsunamis, and occur where denser oceanic plates slip under continental plates.

As the displaced water mass moves under the influence of gravity to regain its equilibrium, it radiates across the ocean like ripples on a pond.

Tsunami always bring great damage. Most of the damage is caused by the huge mass of water behind the initial wave front, as the height of the sea keeps rising fast and floods powerfully into the coastal area.

Contoh Explanation 2

How Chocolate is made?


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 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 ground to make it a 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 the ground nibs from liquid. It is pure bitter chocolate.

Contoh Explanation 1