Geography Question
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8 Jun 2011, 16:02
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Journals
First : Insolation & Radiation.
I don't quite understand the concept of insolation and radiation ( temperature on earth ).
Why does a surface that doesn't absorb that much solar energy ges hotter than a surface that absorbs more solar energy ? My books say that a surface that reflects more solar energy has a bigger temperature than a surface that practically doesn't reflect any solar energy at all. By bigger temperature I mean it produces more infrared heat waves or sth. Also, it says the tropical parts of the earth have more insolation than radiation and the rest more radiation than insolation, don't quite get that part as well. Makes it all quite confusing for me :(
2nd thing is Pressure Changing
Why does the air flow from a low pressure area to a high pressure area ? And why does wind flow from a high pressure area to a low pressure area ?
Never quite payed that much attention, so my understanding about it isn't that big as a result and I'd be happy if somebody could clarify all of this to me !
I don't quite understand the concept of insolation and radiation ( temperature on earth ).
Why does a surface that doesn't absorb that much solar energy ges hotter than a surface that absorbs more solar energy ? My books say that a surface that reflects more solar energy has a bigger temperature than a surface that practically doesn't reflect any solar energy at all. By bigger temperature I mean it produces more infrared heat waves or sth. Also, it says the tropical parts of the earth have more insolation than radiation and the rest more radiation than insolation, don't quite get that part as well. Makes it all quite confusing for me :(
2nd thing is Pressure Changing
Why does the air flow from a low pressure area to a high pressure area ? And why does wind flow from a high pressure area to a low pressure area ?
Never quite payed that much attention, so my understanding about it isn't that big as a result and I'd be happy if somebody could clarify all of this to me !
":D"
Low pressure means that there is less air in the area and since nature always wants balance air will travel from high pressure area's to low pressure area's. Wind doesn't flow.
In other news: Stop trolling.
O <- sun
###### <- clouds
|||||||||||| <- heat waves from sun
________ <-surface
heat stays inside becuz cant escape
Osmosis, where water moves from an area of high water potential (solute concentration) to an area of low water potential through a semi-permeable membrane.
And diffusion where molecules move from high concentration to low concentration.
Think about a tin can, if you fill it with air and increase the pressure inside, it wants to get out to where the pressure is lower, so the top would pop off and the air would rush out to the lower pressure to equalize it. In the case of Osmosis, think of the lid of the can as the membrane.
Maybe something like this, for the other question idk