Explanation Text

      Teks explanation bertujuan untuk menerangkan suatu proses kejadian / proses terbentuknya sesuatu, atau membahas suatu teori, faham, fenomena, defenisi, ideologi, dan hal yang bertali dengan fenomena alam.

Teks explanation juga dapat di gunakan untuk menggambarkan atau menerangkan fungsi suatu benda atau alat.

     Teks explanation umumnya memiliki struktur (generic sturcture)

- General statement, pernyataan umum berupa pendapat penulis atau fenomena yang terjadi di alam ini, atau suatu hal yang secara umum sudah di ketahui

- Penjelasan proses (explanation), mengapa dan bagaimana sesuatu bisa ada/terjadi

     Teks explanation sering menggunakan unsur kebahasaan tertentu (language focus),  antara lain

- General dan abstract noun, misalnya earthquake, chooping, speech, dsb

- Action verb misalnya, produce, do, put

- Simple present tense

- Passive voice

Example of explanation text

Silkworm

       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 silkworm 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 know as ‘Bombyx mori’ can do such spinning

       This caterpillars has special glands which secrete liquid silk throught its lower lip. The liquid produced later hardens to form fine strands. The treads on the outside of the cocoon are rough, whille those inside are soft and smooth.

        Some fully-spun cocoons are heated. This kills the pupa inside. The cocoons are then put into hor 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 sound 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, chooping 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 sounds, the vocal tract must change shape. During speech we continually alter the shape of the vocal tract by moving the tounge and  lips, etc. This movements change the acoustic properties of the vocal tract, which in turn produce the different sounds of speech