Iklan

Pertanyaan

Those who live at or visit high latitudes might at times experience coloured lights shimmering across the night sky. Some Inuit believed that the spirits of their ancestors could be seen dancing in the flickering aurora. In Norse mythology, the aurora was a fire bridge to the sky built by the gods. This ethereal display – the aurora borealis or aurora australis, the northern or southern lights – is beautiful. What causes these lights to appear? Our sun is 93 million miles away. But its effects extend far beyond its visible surface. Great storms on the sun send gusts of charged solar particles hurtling across space. If Earth is in the path of the particle stream, our planet’s magnetic field and atmosphere react. When the charged particles from the sun strike atoms and molecules in Earth’s atmosphere, they excite those atoms, causing them to light up. What does it mean for an atom to be excited? Atoms consist of a central nucleus and a surrounding cloud of electrons encircling the nucleus in an orbit. When charged particles from the sun strike atoms in Earth’s atmosphere, electrons move to higher-energy orbits, further away from the nucleus. Then when an electron moves back to a lower-energy orbit, it releases a particle of light or photon. What happens in an aurora is similar to what happens in the neon lights we see on many business signs. Electricity is used to excite the atoms in the neon gas within the glass tubes of a neon sign. That’s why these signs give off their brilliant colours. The aurora works on the same principle – but at a far more vast scale. The aurora often appears as curtains of lights, but they can also be arcs or spirals, often following lines of force in Earth’s magnetic field. Most are green in colour but sometimes you’ll see a hint of pink, and strong displays might also have red, violet and white colours. The lights typically are seen in the far north – the nations bordering the Arctic Ocean – Canada and Alaska, Scandinavian countries, Iceland, Greenland and Russia. But strong displays of the lights can extend down into more southerly latitudes in the United States. And of course, the lights have a counterpart at Earth’s south polar regions. The colours in the aurora were also a source of mystery throughout human history. But science says that different gases in Earth’s atmosphere give off different colours when they are excited. Oxygen gives off the green colour of the aurora, for example. Nitrogen causes blue or red colours. So today the mystery of the aurora is not so mysterious as it used to be. Yet people still travel thousands of miles to see the brilliant natural light shows 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. Source : http://earthsky.org According to paragraph 4, we can see aurora in these following areas, except …

Those who live at or visit high latitudes might at times experience coloured lights shimmering across the night sky. Some Inuit believed that the spirits of their ancestors could be seen dancing in the flickering aurora. In Norse mythology, the aurora was a fire bridge to the sky built by the gods. This ethereal display – the aurora borealis or aurora australis, the northern or southern lights – is beautiful. What causes these lights to appear?
Our sun is 93 million miles away. But its effects extend far beyond its visible surface. Great storms on the sun send gusts of charged solar particles hurtling across space. If Earth is in the path of the particle stream, our planet’s magnetic field and atmosphere react. When the charged particles from the sun strike atoms and molecules in Earth’s atmosphere, they excite those atoms, causing them to light up.
What does it mean for an atom to be excited? Atoms consist of a central nucleus and a surrounding cloud of electrons encircling the nucleus in an orbit. When charged particles from the sun strike atoms in Earth’s atmosphere, electrons move to higher-energy orbits, further away from the nucleus. Then when an electron moves back to a lower-energy orbit, it releases a particle of light or photon.
What happens in an aurora is similar to what happens in the neon lights we see on many business signs. Electricity is used to excite the atoms in the neon gas within the glass tubes of a neon sign. That’s why these signs give off their brilliant colours. The aurora works on the same principle – but at a far more vast scale.
The aurora often appears as curtains of lights, but they can also be arcs or spirals, often following lines of force in Earth’s magnetic field. Most are green in colour but sometimes you’ll see a hint of pink, and strong displays might also have red, violet and white colours. The lights typically are seen in the far north – the nations bordering the Arctic Ocean – Canada and Alaska, Scandinavian countries, Iceland, Greenland and Russia. But strong displays of the lights can extend down into more southerly latitudes in the United States. And of course, the lights have a counterpart at Earth’s south polar regions.
The colours in the aurora were also a source of mystery throughout human history. But science says that different gases in Earth’s atmosphere give off different colours when they are excited. Oxygen gives off the green colour of the aurora, for example. Nitrogen causes blue or red colours.
So today the mystery of the aurora is not so mysterious as it used to be. Yet people still travel thousands of miles to see the brilliant natural light shows 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.
                                                
 Source    : http://earthsky.org

According to paragraph 4, we can see aurora in these following areas, except

  1. Canada, Sweden, and Brazil.

  2. Canada, Alaska, and Iceland.

  3. Russia, Sweden, and Norway.

  4. Russia, Alaska, and Norway.

  5. Alaska, Norway, and Canada.

8 dari 10 siswa nilainya naik

dengan paket belajar pilihan

Habis dalam

00

:

21

:

36

:

20

Klaim

Iklan

D. Danti

Master Teacher

Jawaban terverifikasi

Jawaban

jawaban yang paling tepat ialah A ( Canada, Sweden, and Brazil ).

jawaban yang paling tepat ialah A (Canada, Sweden, and Brazil).

Pembahasan

The lights typically are seen in the far north – the nations bordering the Arctic Ocean – Canada and Alaska, Scandinavian countries, Iceland, Greenland and Russia. (Cahaya-cahaya ini biasanya terlihat di ujung utara - negara-negara yang berbatasan dengan Samudera Arktik - Kanada dan Alaska, negara-negara Skandinavia, Islandia, Greenland dan Rusia.) Berdasarkan kalimat ini, kita bisa ketahui bahwa aurora tidak bisa dilihat di Brazil karena Brazil bukanlah bagian dari negara Skandanavia, sementara Swedia termasuk negara Skandanavia. Jadi, jawaban yang paling tepat ialah A ( Canada, Sweden, and Brazil ).

The lights typically are seen in the far north – the nations bordering the Arctic Ocean – Canada and Alaska, Scandinavian countries, Iceland, Greenland and Russia. (Cahaya-cahaya ini biasanya terlihat di ujung utara - negara-negara yang berbatasan dengan Samudera Arktik - Kanada dan Alaska, negara-negara Skandinavia, Islandia, Greenland dan Rusia.) Berdasarkan kalimat ini, kita bisa ketahui bahwa aurora tidak bisa dilihat di Brazil karena Brazil bukanlah bagian dari negara Skandanavia, sementara Swedia termasuk negara Skandanavia. Jadi, jawaban yang paling tepat ialah A (Canada, Sweden, and Brazil).

Perdalam pemahamanmu bersama Master Teacher
di sesi Live Teaching, GRATIS!

1

Iklan

Pertanyaan serupa

Those who live at or visit high latitudes might at times experience coloured lights shimmering across the night sky. Some Inuit believed that the spirits of their ancestors could be seen dancing in th...

1

5.0

Jawaban terverifikasi

RUANGGURU HQ

Jl. Dr. Saharjo No.161, Manggarai Selatan, Tebet, Kota Jakarta Selatan, Daerah Khusus Ibukota Jakarta 12860

Coba GRATIS Aplikasi Roboguru

Coba GRATIS Aplikasi Ruangguru

Download di Google PlayDownload di AppstoreDownload di App Gallery

Produk Ruangguru

Hubungi Kami

Ruangguru WhatsApp

+62 815-7441-0000

Email info@ruangguru.com

[email protected]

Contact 02140008000

02140008000

Ikuti Kami

©2024 Ruangguru. All Rights Reserved PT. Ruang Raya Indonesia