Physics Van 3-site Navigational Menu

Physics Van Navigational Menu

Q & A: How can pressure melt ice?

Learn more physics!

Most recent answer: 10/22/2007
Q:
How can pressure melt ice?
the best android phone link phone tracking apps
free prescription cards nwwebdesigns.net walgreens prints coupon codes
finasteride lasix 40mg cialis 80mg
prescriptions coupons discount card for prescription drugs discount coupon for viagra
coupons for prescriptions floridafriendlyplants.com prescription drugs discount cards
coupon for viagra viagra trial coupon viagra discount coupons online
coupon for viagra viagra trial coupon viagra discount coupons online
cialis dosage and go cialis dose for copd pts
discount prescription drug cards open prescription discounts cards
voltaren ára go voltaren
venlafaxine gewichtstoename idippedut.dk venlafaxine fk
naprosyn roche naprosyn wiki naprosyn nedir
champix alkohol go champix
flibanserin online click flibanserin buy
proscar vs propecia for hair loss proscar pris proscar pris
cialis coupon card evans.com.mx cialis coupon
trental cena link trental nuspojave
trental cena trental trental nuspojave

- Brian Kenney (age 11)
St. Matthew, Seattle, WA USA
A:
Dear Brian,

That's an excellent question! The answer to this is the same as the answer to another question: Why does ice float?

To answer both of these questions we must first realize that something very interesting happens to water when it freezes: It takes up more space! To see that this it true, fill a glass half full of water and make a pencil mark on the glass exactly at the top of the water (better ask your mom or dad to help with this experiment). Now put the glass in the freezer overnight. When you look at the glass in the morning it will have ice in it, and the top of the ice will be slightly above the pencil mark. This is because the water expanded as it froze.

Since the ice still weighs exactly the same as the water did the night before, but is now taking up more space, it will float. You know this is true...just drop an ice cube in a glass of water and you will see it stay at the surface.

OK, so what does this have to do with pressure and melting. Well, the answer is exactly the same as the above, only in reverse. If we take some ice and push on it hard by putting lots of pressure on it, we are really just trying to make it take up less space. One way for ice to take up less space is for it to turn back into water, which is the answer to your question.

To verify that water takes up less space than ice, just leave your glass of ice (from the last experiment) on the counter until it melts and you will see that the water is back below the line you drew on the glass.

Hope this helps. MS
cheater read wifes who cheat
hillcrest abortion clinic site live abortion video
buy sildenafil 100mg viagra without a doctor prescription viagra 100 mg
priligy 30mg go cialis 40mg
coupons rx prostudiousa.com www.januvia.com coupons
levitra pill imitrex 25mg tadalafil pill
imitrex 50mg site flagyl 200mg
online discount pharmacy viagra coupons and discounts coupon for prescription
viagra coupons free read drug coupons
discount prescriptions coupons printable cialis coupon internet drug coupons
cialis dosage and cialis dose for copd pts
acheter viagra pas acheter viagra pas acheter viagra pas
viagra bestellen online viagra pillen kruidvat pillen kopen
where buy viagra online side effects from viagra use online viagra buy
cialis coupons from lilly coupon for free cialis coupons for prescriptions
drug discount coupons link discount coupons for prescriptions
discount prescription drug cards cialis online coupon prescription discounts cards
claritinekombo warpedfish.co.uk claritine za psa
naproxennatrium zygonie.com naproxen migraine
augmentin générique arbot.cz augmentin sirop
champix alkohol go champix
champix alkohol go champix
sildenafil pfizer link sildenafil sandoz
proscar vs propecia for hair loss proscar proscar pris
cefdinir red stool cefdinir nedir cefdinir nedir
voltaren retard link voltaren spray

(published on 10/22/2007)

Follow-up on this answer.