NewScientist The Last Word - Tag 'cold' details

Tag 'cold' details

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I have heard that submarines travel faster in colder water. Why? Brendan Reilly, Dublin, Ireland
Editorial status: In magazine. (no votes) There are 11 answer(s) for this question. View answers \| Submit an answer

Asked by Moderator
on 2010-05-05 12:06:42

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Categories: Transport, Technology, Unanswered.

Tags: water, temperature, cold, speed, submarine.

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A chest cold made my voice deeper (and sexier apparently). What caused this? Can I get the deep voice without the cold?
(no votes) There are 1 answer(s) for this question. View answers \| Submit an answer

Asked by sickspaceman
on 2010-04-16 14:47:52

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Categories: Human Body.

Tags: cold, health, sex, voice, cough, speak.

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Why does cold weather dry my skin out? Generally things dry out more slowly the colder it is, yet as soon as winter arrives my hands become so dry the skin splits. Bernard Marie, Lille, France
Editorial status: In magazine. (no votes) There are 3 answer(s) for this question. View answers \| Submit an answer

Asked by Moderator
on 2010-04-14 10:58:38

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Last edited on: 2010-04-21 14:29:57

Categories: Human Body.

Tags: weather, cold, skin, wet, dry.

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curly hands ? why do your hands curl when they are cold or relaxed also i have all my questions here in this blog http://questions-about-the-world.blogspot.com/
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Asked by 4905abalexbennett
on 2010-02-08 14:50:47

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Last edited on: 2010-02-08 14:52:02

Categories: Human Body.

Tags: cold, hands, relaxed, curlyhands, curly.

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No Ice Under Bridges I was walking along a canal several days ago, and, the UK weather being what it is at the moment, the canal was frozen. However under all the bridges that crossed the canal, whether footbridge or road bridge, the water was unfrozen. What is it about the bridges that stops the water under them from freezing?
(no votes) There are 3 answer(s) for this question. View answers \| Submit an answer

Asked by hazz
on 2010-01-13 21:22:04

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Categories: Weather .

Tags: weather, water, temperature, ice, cold, snow, Bridges.

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Does a room get hotter when you boil a pot of water?

My girlfriend and I were having an argument the other day. Sometimes when it is cold in the kitchen, I turn in the gas hob to warm the place up. The argument is that she claims that the room gets hotter if you put a pot of water on the hob to boil and let the room get steamy. I disagree and think that the room gets just as hot without boiling a pot of water.

Who is right? Does the room get hotter with the pot of water or does the room get just as hot without it?

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Asked by lazyscience
on 2010-01-09 14:31:08

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Categories: Domestic Science.

Tags: water, temperature, cooking, cold, heat, science, kitchen, Boilingwater, hot, steam.

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How do waterfalls freeze? After visiting Iceland last year you could see frozen waterfalls coming down from the cliffs? How do these freeze since surely they have too much kinetic energy?
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Asked by jeaster
on 2010-01-06 16:57:23

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Categories: Planet Earth.

Tags: water, cold, freeze, frozen, kinetic, waterfall.

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Why do freezer bags blow up like balloons?

My friend and I work in a molecular biology lab, with regular access to a -80C lab freezer. The other researchers' and students' sample tubes/vials are kept in boxes or sealed ziplock bags in the freezer. Occasionally, after a period of storage, a random ziplock bag will be inflated almost to bursting point. On speculating why this could be, I suggested that the water droplets in the air that is trapped in the bag will freeze rapidly and hence expand, and the pressure increase causes the bag to inflate. My friend disagrees, reasoning that expansion of water droplets alone can't possibly account for the huge increase in volume inside the bag. Who is right or, if neither, what is the correct explanation?

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Asked by lornakelly
on 2009-10-01 12:02:33

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Categories: Unanswered.

Tags: physics, cold, gas, vapour, freezer.

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Why are the surfaces of metal and tiles in the house not at room temperature at any time of day? Surely if they are good conductors then they will absorb the heat easily, just as they do when you place your hand onto the surface?
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Asked by TheMonk
on 2009-09-30 23:05:02

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Categories: Domestic Science.

Tags: cold, heat, Metal, Heatloss, conductor.

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If the temperature is above 0 degrees c, and the wind chill factor puts the temp below 0, does water freeze?
(no votes) There are 5 answer(s) for this question. View answers \| Submit an answer

Asked by rob.stass
on 2009-08-29 17:17:44