[Amy Hui]

Students who know the answer can answer below, and the 10 participants who answered correctly will receive 5 reusable cloth masks each!

 

The correct answer will be announced on Thursday.

 

Activity Details:

1. Each participant can only submit an answer once. If a participant submits multiple answers, the institution will use the first answer as the final answer.
2. The organization has the final and binding decision on this event (such as participation qualification, award qualification, award list and award collection arrangement, etc.). In case of any disputes, the agency reserves the right of final decision and interpretation.

• This topic was modified 2 years ago by Amy Hui.

[6B04 YU CHAI CHAU]

Any star (except the sun) is so far away from the earth that basically only one ray of light reaches the earth. When light enters the atmosphere and passes through air of different temperatures<b>meeting</b>There are different scatters. If that ray scatters away from us,<b>Star</b>It seems to disappear for a while; when the light just hits the eye,<b>Star</b>reappears, producing a flickering effect

[Amy Hui]

The previous answer is that temperature causes star flashes.

There is another reason, which is related to the atmosphere of the earth. Since light has the property of bending through different substances, this is the refraction of light. When the air pressure in the atmosphere changes, resulting in a change in the density of the atmosphere, light refraction occurs. The stronger the wind, the more often the refraction of light occurs. Star twinkling is a phenomenon caused by differences in atmospheric density when light reflected or projected by stars passes through the atmosphere. Therefore, stars do not actually twinkle, and stars other than stars do not have the ability to emit light.

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