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A green flash, which occurs more commonly at sunset-but can also occur at sunrise-is a phenomenon in which part of the sun can be observed suddenly and briefly changing colour. It usually lasts only a second or two-which is why it is referred a flash-as the sun changes from red or orange at sunset, for example.      The green flash is viewable because refraction bends the light of the sun. The atmosphere acts as a weak prism, which separates light into various colours. When the sun's disk is fully visible above the horizon, the different colours of light rays overlap to an extent where each individual colour can't be been by the naked eye.      When the sun starts to dip below the horizon, the colours of the spectrum disappear one at a time, starting with those with the longest wavelengths to those with the shortest. At sunrise, the process is reversed, and a green flash may occur as the top of the sun peeks above the horizon.      It is a primarily a green flash because more green light get through and therefore is more clearly seen. Sometimes, when the hair is especially clear, enough of the blue or violent light rays make it through the atmosphere, causing a blue flash to be visible. However, green is the most common hue reported and captured in photos. Adopted from: https://www.livescience.com/26376-green-flash.html (6th December 2018) Why can people see the phenomenon?

Pertanyaan

     A green flash, which occurs more commonly at sunset-but can also occur at sunrise-is a phenomenon in which part of the sun can be observed suddenly and briefly changing colour. It usually lasts only a second or two-which is why it is referred a flash-as the sun changes from red or orange at sunset, for example.

     The green flash is viewable because refraction bends the light of the sun. The atmosphere acts as a weak prism, which separates light into various colours. When the sun's disk is fully visible above the horizon, the different colours of light rays overlap to an extent where each individual colour can't be been by the naked eye.

     When the sun starts to dip below the horizon, the colours of the spectrum disappear one at a time, starting with those with the longest wavelengths to those with the shortest. At sunrise, the process is reversed, and a green flash may occur as the top of the sun peeks above the horizon.

     It is a primarily a green flash because more green light get through and therefore is more clearly seen. Sometimes, when the hair is especially clear, enough of the blue or violent light rays make it through the atmosphere, causing a blue flash to be visible. However, green is the most common hue reported and captured in photos.

Adopted from: https://www.livescience.com/26376-green-flash.html (6th December 2018)

Why can people see the phenomenon?

  1. Refraction bends the sunlight.

  2. Illumination bends the sunlight.

  3. The top of the sun peeks below the horizon.

  4. The atmosphere separates light into various shapes.

  5. The different colours of light rays go straight along the horizon.

N. NOPRILIANSYAH

Master Teacher

Mahasiswa/Alumni UIN Raden Intan Lampung

Jawaban terverifikasi

Pembahasan

Berdasarkan paragraf kedua pada kalimat “The green flash is viewable because refraction bends the light of the sun.” dapat diketahui bahwa fenomena alam tersebut dapat terlihat ketikaterjadi pembiasan berbelok kea rah cahayamatahari. Maka pernyataan yang tepat untuk menjawab pertanyaan tersebut adalah “Refractions bends the sunlight”

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