Differences Between Snow and Ice
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Questions and Answers

What mainly gives snow its whiteness?

  • The arrangement of ice-needles
  • The density of the snowflakes
  • The transformation of snow into firm ice
  • The presence of air caught within the ice-needles (correct)

    • How does the texture of glacier-ice compare to that of snow?

  • Glacier-ice is denser and has more needles than snow.
  • Glacier-ice has a very loose arrangement compared to snow.
  • Glacier-ice includes open spaces filled with air like snow.
  • Glacier-ice is like glass, making flowers and needles discernible. (correct)

    • What happens to snow under hard pressure, according to the text?

  • It expands to create more open spaces.
  • It evaporates into the air.
  • It transforms into firm ice. (correct)
  • It becomes even lighter in color.

    • What characterizes 'the line of perpetual snow' mentioned in the text?

    <p>It is where snow and ice persist throughout the year.</p> Signup and view all the answers

    At what altitude is the snow-line over the equator located?

    <p>Approximately 16,000 feet</p> Signup and view all the answers

    What would happen if Mont Blanc were situated on the equator?

    <p>It would not be a snow-clad mountain.</p> Signup and view all the answers

    What distinguishes solid blocks of ice from masses of feathery snow, according to the text?

    <p>The presence of air between the ice-needles in snow</p> Signup and view all the answers

    How do solid blocks of ice compare to glacier-ice?

    <p>'The texture of glacier-ice is close-like that of glass' unlike solid blocks of ice.</p> Signup and view all the answers

    What is the relationship between snowfall and thawing exactly at the snow-line?

    <p>They are roughly equal in quantity.</p> Signup and view all the answers

    In what way do glaciers act as an outlet for the snow on mountain heights?

    <p>By forming rivers of ice that flow down to lower levels.</p> Signup and view all the answers

    What is the main reason why mountains wearing perpetual snow do not continuously grow higher?

    <p>The thawing of snow equals the snowfall below the snow-line.</p> Signup and view all the answers

    How do the rivers of ice flowing from mountain heights differ from liquid rivers flowing into the ocean?

    <p>They have solid banks rather than liquid banks.</p> Signup and view all the answers

    What characteristic distinguishes Swiss mountains with perpetual snow from gentle English hills with respect to drainage?

    <p>Swiss mountains have rivers of ice instead of rivers of water.</p> Signup and view all the answers

    What would happen if there were no glaciers to help the superabundant snow on mountain heights escape?

    <p>The mountains would gradually grow taller.</p> Signup and view all the answers

    Why does summer warmth in certain regions not lead to the disappearance of winter ice and snow?

    <p>Thawing is insufficient to counterbalance winter additions.</p> Signup and view all the answers

    'Liquid rivers with liquid banks; solid rivers with solid banks.' What does this statement imply?

    <p>'Liquid' refers to water while 'solid' refers to ice.</p> Signup and view all the answers

    'Another mode of escape is found.' What is this 'mode of escape' mentioned in the text?

    <p>'Mode of escape' refers to glaciers carrying away the superabundant snow.</p> Signup and view all the answers

    Why does summer warmth in certain regions fail to get rid of winter ice and snow?

    <p>The quantity of thawing during summer is not enough to balance the wintry additions.</p> Signup and view all the answers

    What causes mountains with perpetual snow to not continuously grow higher?

    <p>The yearly thawing exceeds the yearly snowfall lower down the mountain.</p> Signup and view all the answers

    What distinguishes the mighty snowfields of Switzerland from any gentle range of English hills?

    <p>They have rivers of ice instead of rivers of water.</p> Signup and view all the answers

    Why are glaciers considered an outlet for superabundant snow on mountain heights?

    <p>Glaciers allow excess snow to escape by flowing away as ice rivers.</p> Signup and view all the answers

    What do solid rivers and liquid rivers have in common based on the text?

    <p>They both flow into the ocean.</p> Signup and view all the answers

    How does the yearly thawing compare to the yearly snowfall exactly at the snow-line?

    <p>Yearly thawing equals the yearly snowfall.</p> Signup and view all the answers

    How are rivers flowing from high levels of land to lower levels described in the text?

    <p>&quot;Solid rivers with solid banks.&quot;</p> Signup and view all the answers

    What role do glaciers play in preventing continuous growth of mountains wearing perpetual snow?

    <p>Glaciers act as an outlet for excess snow by flowing as ice rivers.</p> Signup and view all the answers

    What characteristic must be present for mountains with perpetual snow to continuously grow higher?

    <p>The quantity of summer thawing should be less than wintery additions</p> Signup and view all the answers

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