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Explanation

Purpose:

  • To explain the processes involved in the formation or working of natural or socio-cultural phenomena.
  • To give reasons why things are they are

Examples: texts in science or social studies
Generic Structure:
1. General statement
2. Explanation
3. Closing

Language Features:
1. Using Simple Present Tense
2. Using action verbs
3. Using passive voice
4. Using noun phrase
5. Using adverbial phrase
6. Using technical terms
7. Using general and abstract noun
8. Using conjunction of time and cause-effect.

 

The example of Explanation Text:

A brief Summary of Speech Production

 General Statement to Position the Reader

 Speech production is made possible by the specialised movements of our vocal organs that generate speech sounds waves.

 Explanation
Like all sound production, speech production reguires 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 breathe normally, the air stream is inaudible. To become audible, the air stream must vibrate rapidly. The vocal cords cause the air stream to vibrate.

Explanation

As we talk, the vocal cords open and close rapidly, chopping up the steady air stream into a series of puffs. These puffs are heard as a buzz. But this buzz is still not speech.

Closing
To produce speech sounds, the vocal tract must change shape. During speech we continually alter the shape of the vocal track by moving the tongue and lips,etc. These movements change the acoustic properties of the vocal tract, which in turn produce the different sounds of speech.

How does Earthquake 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.

 

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