Задание № 23722
According to Jane, why does snow seem to be blue sometimes?
1) Because of peculiarities in the light reflection.
2) Because of the amount of sunlight.
3) Because of the distance we look at it from.
В заданиях 3—9 обведите цифру 1, 2 или 3, соответствующую выбранному вами варианту ответа. Вы услышите запись дважды.
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Комментарий:
"Generally, the colour of snow and ice appears white because the light we see from the sun is white. Most natural materials take in some sunlight which defines their colour. However, when light travels from air to snow, some light is reflected. Snow crystals have many surfaces to reflect sunlight. Yet the snow takes in a little sunlight. It is this light that gives snow its white appearance. Sometimes, snow or ice may appear blue. The blue light is the product of a long travel path through the snow or ice. In simple terms, think of snow or ice as a filter." Ответ: 1
"Generally, the colour of snow and ice appears white because the light we see from the sun is white. Most natural materials take in some sunlight which defines their colour. However, when light travels from air to snow, some light is reflected. Snow crystals have many surfaces to reflect sunlight. Yet the snow takes in a little sunlight. It is this light that gives snow its white appearance. Sometimes, snow or ice may appear blue. The blue light is the product of a long travel path through the snow or ice. In simple terms, think of snow or ice as a filter." Ответ: 1
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