Sonora.ID - Artikel kali ini akan membahas tentang 7 text explanation tentang fenomena alam yang singkat dan lengkap dengan terjemahan.

Text explanation adalah jenis teks yang digunakan untuk menjelaskan sebab-akibat dari suatu fenomena yang terjadi di kehidupan sehari-hari.

Ada banyak sekali isu yang bisa diangkat dalam jenis teks ini, salah satunya adalah text explanation tentang fenomena alam.

Untuk menghasilkan text explanation yang baik, kamu dapat memperhatikan struktur penulisannya terlebih dahulu, yaitu:

1. Title, berisikan judul dari teks yang menggambarkan tentang isi
2. General statement, berisikan pernyataan umum terkait isu yang dibahas di dalam teks
3. Explanation, berisikan penjelasan sebab-akibat dari suatu isu yang dibahas
4. Conclusion, berisikan kesimpulan sebagai penutup dari teks

Kamu bisa menyimak 7 text explanation tentang fenomena alam berikut ini sebagai referensi penulisan yang sudah Sonora ID rangkum dari berbagai sumber.

Baca Juga: 30 Contoh Soal UTS Bahasa Inggris Kelas 9 Semester 1, Lengkap dengan Kunci Jawaban

1. Contoh Text Explanation tentang Fenomena Alam I

How Seawater Becomes Salty

General Statement:

Two-thirds of the Earth’s surface is covered in water, and 97% of that is salty seawater. Only 3% of our planet’s water is fresh such as water in rivers, lake, and streams. This fresh water plays a big role in explaining how the sea becomes salty. Water moves around our planet in a cycle powered by the sun: from the sea, to the sky, to the land and then back to the sea.

Explanation:

When the sun heats the water in the sea, it changes into gas called water vapour and rises into the air, through a process called evaporation. After that, the water vapour turns back into liquid water while floating in the air, forming clouds through a process called condensation. Then this water eventually falls from the clouds in the sky as rain, sleet, hail or snow in which the process is also called precipitation. When these flows into streams and rivers, and eventually makes its way back to the sea.

Furthermore, the rain that falls from the sky contains small amounts of chemicals called carbon dioxide and sulphur dioxide which makes the rain slightly acidic. This acid can absorb small amounts of mineral salts, including sodium and chloride. These mineral salts are dissolved from the rocks which then enter the water.

Conclusion:

Thus, the main salt in seawater is sodium chloride. The rain water flows off the land and into the rivers and streams that lead all the way to the sea, carrying the dissolved salts along with it that makes the seawater salty.

2. Contoh Text Explanation tentang Fenomena Alam II

Aurora Borealis

General Statement

The northern lights, or aurora borealis, are a spectacular, colorful display of light commonly seen in the night sky in the northern hemisphere. Auroras in the southern hemisphere are known as the southern lights or aurora australis. Both the northern lights and the southern lights are polar lights, or aurora Polaris, because they occur near Earth’s magnetic poles.

Explanation

Auroras occur when charged particles (electrons and protons) collide with gases in Earth’s upper atmosphere. Those collisions produce tiny flashes that fill the sky with colourful light. As billions of flashes occur in sequence, the auroras appear to move or “dance” in the sky.

Earth’s magnetic field steers the charged particles towards the poles. The shape of Earth’s magnetic field creates two auroral ovals above the North and South Magnetic Poles. That is why auroras occur almost every night in the northern sky, from August to May.

The aurora often appears as curtains of lights, but they can also be arcs or spirals, following lines of force in Earth’s magnetic field. Most are green in color, but sometimes you’ll see a hint of pink. Strong displays might also have red, violet and white colors. The lights typically appear in the far north – the nations bordering the Arctic Ocean – Canada, Scandinavian countries, Iceland, Russia and the state of Alaska. But strong displays can extend down into more southerly latitudes.

The colors in the aurora were once a source of mystery throughout human history. But science says that different gases in Earth’s atmosphere give off different colors when they are excited. Oxygen gives off the green color of the aurora, for example. Nitrogen causes blue or red colors.

Conclusion

So today the mystery of the aurora is not as mysterious as it used to be. Yet people still travel thousands of miles to see the brilliant natural light shown in Earth’s atmosphere. And even though we know the scientific reason for the aurora, the dazzling natural light show can still fire our imaginations to visualize fire bridges, gods, or dancing ghosts.

3. Contoh Text Explanation tentang Fenomena Alam III

How Rain Happens

General Statement

Rain is one of the main sources of fresh water for almost all people in the world. It provides suitable conditions for diverse ecosystems. It is also used as hydroelectric power plants and crop irrigation. But, do you know how rain happens?

Explanation

The rain’s phenomenon is actually what we often call as “water circle.” The concept of the water cycle involves the sun heating the Earth’s surface water and causing the surface water to evaporate. Then the water vapor rises into the Earth’s atmosphere. The water in the atmosphere cools and condenses into liquid droplets. The droplets grow bigger and heavier and fall to the earth as precipitation.

Conclusion

However, not all rain can reach the surface of the earth. Some evaporates while falling through dry air. This is what we call as “virga”, a phenomenon which is often seen in hot, dry desert regions. 

4. Contoh Text Explanation tentang Fenomena Alam IV

Tornado

General Statement

Tornadoes are vertical funnels of rapidly spinning air. Their winds may top 250 miles an hour and can clear a pathway a mile wide and 50 miles long. Also known as twisters, tornadoes are born in thunderstorms and are often accompanied by hail. Giant, persistent thunderstorms called supercells spawn the most destructive tornadoes. Tornadoes only form when a thunderstorm has a particular combination of winds.

Explanation

Air rising in a thunderstorm can begin to spin when it is affected by winds blowing it in different directions. It starts to rise and is pushed to the side by the wind. It rises a bit more and is jostled again by wind moving in another direction. Winds moving in different speeds and directions at different altitudes cause the rising air to start spinning.

Air that spins as it rises is typical in a supercell, the strongest type of thunderstorm, but not all spinning air creates a tornado.

For a tornado to form, there also needs to be spinning air near the ground. This happens when air in the storm sinks to the ground and spreads out across it in gusts. Gusts of warmer air rise and gusts of cooler air sink as they blow across the land. If there are enough rising and sinking gusts, the air near the ground starts spinning.

The spinning air near the ground speeds up as it is drawn inward toward its axis of rotation. This happens in the same way that figure skaters spin faster when their arms are drawn in rather than when their arms are outstretched. This is called conservation of angular momentum.

The rotating air moves horizontally across the ground, and can be tilted vertically by the force of the rising, rotating air. This allows a tornado to form.

Conclusion

Most tornadoes form during supercell thunderstorms, but not all supercell thunderstorms produce tornadoes. Usually, the rotating air near the ground doesn’t rotate fast enough for a tornado to form. If the rotating air near the ground is very cold, it will spread away from the storm along the ground and slow down like a figure skater with extended arms, and a tornado will not form.

5. Contoh Text Explanation tentang Fenomena Alam V

Baca Juga: 10 Contoh Analytical Exposition Lengkap dengan Penjelasan Strukturnya

Human Respiration

General Statement

Do you know how your body gets oxygen from the air and removes carbon dioxide from your body? Right! It’s because of the respiratory system. Do you know how it works? The following explanation is written to help you understand the process clearly.

Explanation

The first phase of respiration is breathing in or inhalation. This process brings air from outside the body into the lungs. From the lungs, the oxygen moves through blood vessels to the heart which then pumps the oxygen-rich blood to all parts of the body. Oxygen then moves from the blood-stream into the cells, which completes the first phase of respiration. In the cells, oxygen is used in a separate energy-producing process which produces carbon dioxide as a byproduct.

The second phase of respiration begins when the carbon dioxide moves from the cells to the bloodstream which carries carbon dioxide to the heart. Then, it pumps the carbon dioxide-laden blood to the lungs.

Conclusion

In the lungs, breathing out or exhalation removes carbon dioxide from the body, thus completing the respiration cycle.

6. Contoh Text Explanation tentang Fenomena Alam VI

Tsunami

General Statement

In Indonesia we already know the word "tsunami". This natural disaster claimed thousands of lives in Banda Aceh several years ago. Indonesia mourns, the world mourns. So what is the tsunami process? Below is a brief description of the tsunami process. 

Explanation

A tsunami can occur when a phenomenon occurs that causes the movement of large amounts of water in the ocean. This is Volcanic eruptions, earthquakes, landslides, falling meteorites. However, 90% of tsunamis are caused by underwater earthquakes.

Vertical movements occurring in the seafloor crust cause the seafloor to rise or fall abruptly, causing turbulence in the overlying water bodies.

Conclusion

Due to this disturbance, very large amounts of seawater energy flowed in, and when they reached the coast, they became large waves and generated tsunamis.

7. Contoh Text Explanation tentang Fenomena Alam VII

Flooding

General Statement

Flooding is a disaster which commonly happens in large and densely populated cities. In Indonesia, the floods hit Jakarta very often and cause many victims. Then, do you know the process of how a flood happens? Pay attention to the following explanation.

Explanation

The process of natural flooding is preceded by rain which falls to the surface of the earth. Then the rain water is absorbed by the ground surface and flows to the lower place. Once that condition happens, evaporation and the water appear to the surface of the land.

Flooding can be disastrous for humans when floods happen in an area that people live because the water carries along objects like houses, bridges, cars, furniture and even people. On the other hand, the process of non natural flooding is usually caused by bad habits of humans who do not care about the environment, such as littering that can make water flow clogged.

Conclusion

This makes the water deposited in landfills which gradually becomes more common. When water reservoirs can no longer hold water discharge, the water then overflows out theland and cause flooding.

Itulah 7 text explanation tentang fenomena alam yang dapat kamu simak secara seksama; sudah dapat ide untuk mengembangkan gagasan pokok?

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