EXPLANATION TEXT

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                                         How Bread Is Made 

Some people eat bread everyday,but how it is made?

First of all,grains such as wheat or rye are grown on farms.The grains are harvested and stored in silos.Later,they are taken to a flour mill where the grains ground into flour.The flour is then sent to a large bakery,there it is mixed with water,salt,and yeast to make dough.Next,the dough is placed in metal pans.The pans are put into oven.The temperature is about 350 degree Fahnrehid(180 degree celcius).After it is baked for 45 minutes,the bread is taken out of the oven to cool.

Some loaves of bread are sliced in a machine,and then wrapped in plastic bags.An use by date is usually attached to the package.

Finally,the bread is sent to supermarkets or corner shops.

                           Why Summer Daylight is Longger in Winter Daylight

In the summer, the amount of daylight that we get is more than we get in winter. This is not because as much people think we are closer to the sun but because of the tilt of the earth.
The earth is actually closer to the sun in winter than it is in summer but you would be forgiven for thinking that this can not be true after looking out of your window on a cold and frosty morning.
It seems strange that as the earth get closer to the sun during its orbit then the amount of daylight that we get decrease. But that is the case. It is the tilt of the earth that determine the amount of daylight that we get and so the length of time that for us the sun is above the horizon.

                                                             Earthquakes

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.

Tsunami

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

Ok semua ,,, semoga bermanfaat ,,,L