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so sleep alone tonight
My name is ღ||汇嘉||SOPHIAღ. Give me presents! On 22061996 :D [Cancer] [CHRISTIAN] PLMGSS 2.1 I love Aaron (: |
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about this blog
This blog was opened by (SOPHIAARON) to accomodate (SOPHIA)'s Science journal.Do enjoy your stay here, and don't take what's not yours! tagboard
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Videos. (:
-------------Physics------------Liquifaction. How to get out of a quicksand. Math Definitions : What Is Terminal Velocity. Newton's 3 laws of motion. Titration Technique using a burette How to use a pipette. Indroduction to Frictional force. Tacoma Bridge Collapsed! ---------------Chemistry---------- Forensic Video Periodic table song(: Crystal structures: graphite and diamond Chromotography- Separation of MIxtures Separation: Iron from Salt & Sand Mixture Steam Distillation Fractional Distillation Video Video Video Video Video Video Video Video Video Video Video Video Video credits
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Physic- 33
I took these questions from the discussion forum. I shall answer them here(: 1)When certain materials are heated why do some melt & some burn? Ans: Materials with carbon in them will burn. Material without carbon will melt. 2) Why does freezing always start with the surface? Ans: I would say that freezing would start at the surface because heat loss takes time. Meaning it will take longer for the center to reach freezing temperature than the surface. 3) Why does water expand when frozen or when its temperature is below 4 degrees Celsius? Ans: It has something to do with the polar city of the water molecule and the shape of the water molecule. 4) Why does iron turn red after heated? Ans: Everything radiates thermal radiation. The frequency of the radiation for different substances will change with change temperature. Iron turning red hot simply means that its blackbody spectrum is in the visible light wavelengths for a certain range of temperatures ------------------------------------------------------------------------  According to Wikipedia, polar city is a proposed sustainable polar retreat designed to house human beings in the future, in the event that global warming causes the central and middle regions of the Earth to become uninhabitable for a long period of time. Although they have not been built yet, some futurists have been giving considerable thought to the concepts involved. High-population-density cities, to be built near the Arctic Rim and in Antarctica, New Zealand, Tasmania, and Patagonia, with sustainable energy and transportation infrastructure, will require substantial nearby agriculture. |