Contoh “EXPLANATION TEXT ABOUT LIGHTNING”
Process of Lightning Lightning is
an event of the release of static electricity, which occurs dramatically and
naturally. This incident occurred as a result of the discharge of electric
charges of the object, in this case the cloud. Discharge of static electricity
sometimes happen slowly and calmly. However, occasional rapid accompanied by
sparks or a sound of an explosion. Spark of light that appears is called by
lightning. Lightning occurs due to a potential difference in charge between the
cloud and the earth, or cloud to another cloud. The charge on the cloud occurs
because the clouds move continuously on a regular basis. During the movement of
the cloud will interact with other cloud so that the negative charge will be
gathered on one side. While the slight positive charge gathered on the reverse
side. This usually occurs before the cloud 'spill' of rain. Cloud itself is
composed of millions of water droplets and ice frozen in the air. During the
interaction process, water droplets collide with other clouds that are being
re-melting (kendensasi) upwards.
These granules resulting negative charge (electrons) fell. The electrons are collected at the bottom gives a negative charge and the cloud that rose that loses electrons, carrying a positive charge to the top. At this point, the rising air has the ability to carry a positive charge to the top of the cloud, other frozen parts will fall to the bottom or to the cloud to the ground. The combination of impact and freezing causes the difference in charge were very large, and resulted in a lightning strike. Lightning is more common in the rainy season because in these circumstances the air contains higher water content so that power down insulation and current flows more easily. Because there is a cloud of negatively charged and positively charged clouds, then lightning could also happenantarawan different charge. Thunderstorms are one of the most powerful natural phenomena and destroy. Although the lightning current is only momentary, for about 200 microseconds, but the damage is extraordinary. The effect of direct attack is evident, ranging from damage to buildings, fire, until the danger of death to humans.
video about lightning explained
These granules resulting negative charge (electrons) fell. The electrons are collected at the bottom gives a negative charge and the cloud that rose that loses electrons, carrying a positive charge to the top. At this point, the rising air has the ability to carry a positive charge to the top of the cloud, other frozen parts will fall to the bottom or to the cloud to the ground. The combination of impact and freezing causes the difference in charge were very large, and resulted in a lightning strike. Lightning is more common in the rainy season because in these circumstances the air contains higher water content so that power down insulation and current flows more easily. Because there is a cloud of negatively charged and positively charged clouds, then lightning could also happenantarawan different charge. Thunderstorms are one of the most powerful natural phenomena and destroy. Although the lightning current is only momentary, for about 200 microseconds, but the damage is extraordinary. The effect of direct attack is evident, ranging from damage to buildings, fire, until the danger of death to humans.
Terjemahan
Proses Terjadinya Petir Petir merupakan peristiwa lepasnya muatan listrik statis yang terjadi secara dramatik dan alamiah. Peristiwa ini terjadi akibat dari keluarnya muatan-muatan listrik dari benda, dalam hal ini adalah awan. Pelepasan listrik statis kadang-kadang terjadi secara perlahan dan tenang. Namun, sesekali berlangsung cepat disertai percikan cahaya atau suatu bunyi ledakan. Percikan cahaya yang muncul ini disebut dengan kilat. Petir terjadi karena perbedaan potensial muatan antara awan dan bumi, atau awan dengan awan lainnya. Muatan pada awan itu terjadi karena awan bergerak terus-menerus secara teratur. Selama pergerakan itu awan akan berinteraksi dengan awan lainnya sehingga muatan negatif akan berkumpul pada salah satu sisi. Sedangkan muatan posotif berkumpul pada sisi sebaliknya. Biasanya ini terjadi sebelum awan ‘menumpahkan’ hujan. Awan sendiri terdiri dari jutaan butir air dan es beku di udara. Selama proses interaksi, butiran air berbenturan dengan awan lain yang sedang kembali mencair (kendensasi) ke atas. Butiran ini mengakibatkan muatan negatif (elektron) terjatuh. Elektron tersebut terkumpul di bagian bawah memberikan muatan negatif dan awan yang naik yang kehilangan elektron, membawa muatan positif ke bagian atas. Pada titik ini, udara yang naik mempunyai kemampuan untuk membawa muatan positif ke awan bagian atas, bagian beku lainnya akan terjatuh ke bagian awan terbawah atau menuju ke tanah. Kombinasi antara benturan dan pembekuan ini menyebabkan perbedaan muatan yang sangat besar, dan mengakibatkan terjadinya sambaran petir. Petir lebih sering terjadi pada musim hujan karena pada keadaan ini udara mengandung kadar air yang lebih tinggi sehingga daya isolasinya turun dan arus lebih mudah mengalir. Karena ada awan bermuatan negatif dan awan bermuatan positif, maka petir juga bisa terjadi antarawan yang berbeda muatan. Petir merupakan salah satu fenomena alam yang paling kuat dan menghancurkan. Meskipun arus petir hanya sesaat, kira-kira selama 200 mikrodetik, tapi kerusakan yang ditimbulkan sangat luar biasa. Efek dari serangan langsung sangat jelas terlihat, mulai dari kerusakan bangunan, kebakaran, sampai bahaya kematian bagi manusia.
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