Question

why do snow accumulate at mountain top?​

Answer 1

Explanation:

a mountain to a higher altitude (height), the atmosphere gets thinner and thinner. This is because air pressure decreases with altitude. Even though warm air rises, as it does so the rising air expands and cools. ... More moisture means more rain and, at the very top of a mountain, more snow

Answer 2

Relation of temperature with altitude:

As the altitude increases, the temperature keeps on decreasing. We see a fall of about 6.5°C for every 1000 meter rise in altitude. This occurs due to a variable number of factors:

1. The density of air: As we go above, the air goes on becoming thinner and thinner. Less dense air cannot hold heat and thus loses it. So the upper layers of the atmosphere remain comparatively cooler than the layers below.
2. The radiating effect of Earth: The Earth absorbs heat during the day and radiates some of it back into the atmosphere. The lower layers of the atmosphere contain dust particles which can absorb this heat and thus heat up the surroundings.
   Comparatively, the upper layers are free of these dust particles and greenhouse gases. So, they absorb less heat and less density of the upper layers of air contributes to this factor.

Thus, the tops of the mountain which are high, are covered with snow due to the low temperatures that allow the snow to persist all year rpund.

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