EXAMPLE OF TEXT
• General Statement
Lightning is a natural phenomenon that usually appears in the rainy season when the sky gives rise to a momentary of blinding light. A few moments later, followed by a thunderous sound called thunder. This difference in time of appearance is due to the difference between the speed of sound and the speed of light
• Explanation
Lightning occurs because there's a potential difference between the cloud and the earth or with other clouds. The process of the occurrence of charge on the cloud because it moves continuously regularly, and during its movement it will interact with other clouds so that negative charges will gather on one side (up or down), while positive charges gather on the opposite side.
If the potential difference between the cloud and the earth is large enough, there will be a discharge of negative charges
(electrons) from the cloud to the earth or vice versa to reach equilibrium In this discharge process, the medium through
which electrons pass is air. When electrons are able to penetrate the air insulation threshold, a sound explosion occurs.
• Closing
Lightning is more common in the rainy season, because in that condition, the air contains a higher moisture content so that
the insulation power drops and the current flows more easily. Because there are negatively charged clouds and positively
charged clouds, lightning can also occur between clouds of different charges.
EXERCISE-WORKBOOK - HANDWRITING
- Make your own summary about explanation text
- Write your answer in complete sentences.
1. Which one goes first, the lightning or thunder? Explain your answer!
2. Lightening occurs because of
3. How does a sound explosion happen?
4. Why is lightening usually found in wet season?
5. If you are given a task to make an explanation, what phenomenon will you choose to explain?
Jawaban:
1. The lightning, because when the sky gives rise to a momentary of blinding light, a few moments later, followed by a thunder. This difference in time of appearance is due to the difference between the speed of sound and the speed of light.
2. because there's a potential difference between the cloud and the earth or with other clouds.
3. Sound explosion will happen if the potential difference between the cloud and the earth is large enough, there will be a discharge of negative charges (electrons) from the cloud to the earth or vice versa to reach equilibrium.
4. Lightning is more common in wet season, because in that condition, the air contains a higher moisture content so that the insulation power drops and the current flows more easily.
5. phenomenon about tornado.
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