A2 AQA Geography 3A Summer 2012

thats correct on your types of waves. I got taught that L waves are a type of secondary waves, that are not as bad as P waves, but I will read up on that and see what the answer truly is . Do you feel like you hardly know anything of what you are supposed to know??

anyone who is doing PLATE TECTONICS may find this useful .. they are 2 sets of notes on plate tectonics ...



check the vid out, for badly drawn but good examples and stuff of landforms at plate boundaries!!

I'm not sure if anyone has replied to you or if this will be of any help..

But the Hadley cell is the cell around the equator, due to the high angle of incidence from the sun it intensely heats the earth causing air to rise. This causes an area of low pressure at the equator from the rising air, which cools, condenses forming clouds and percipitation later in the day. The rising air then moves 30 degrees N and S of the equator where it begins to sink forming an area of high pressure at the tropics of Capricorn and Cancer. Here there is little rainfall and due to still quite a high incidence from the sun and high radiation levels high temperatures. Some of the air is then transferred back to the equator as trade winds.
Other moves as westerly winds across the surface to meet polar winds. This creates an area of low pressure as the two air masses meet, the hot air is forced upwards which cools, condenses and falls as rain. This happens 60 degrees N and S of the equator and is an area where depressions can form. Some of this air of course moves towards the poles. It the sinks since there is an area of high pressure at the poles and little precipitation. The movement of relatively warmer air to the poles helps address the energy deficit.

No idea if that would have helped but try watching this if not...

http://www.youtube.com/watch?v=Ye45DGkqUkE

Im confident theory wise its just case study facts and figures esp when it comes to global warming and sea level rises, kyoto emission %'s etc

You are what i would call a babe!

world cities, globalisation + plate tectonics.... wbu?

can someone PLEASE explain the general atmospheric circulation (coriolis force, hadley cells, ITCZ...) PLEAAASE! i'm panicking too much right now. ahaha

Hmmm. I seem to remember doing quite a few practice seismic 40 markers. Maybe I'm just being delusional in the face of the exam!
I'm praying for a Seismic 40 marker now.

eeww... two human!! okay i can't really talk considering it it my degree path, ahaa. I'm doing development, plates and ecosystems!!

ino haha development is horrible D: what r ur predictions for it?

P- Fastest
S- Half as fast and move right angles to direction of movement
L- Responsible for vertical ground movement (liquefaction)

Just a question would L waves not be more dangerous then P waves? Earthquake proof buildings are built to resist horizontal movement not so much vertical?

i do globalisation in eco so its a little easy but the amount of case studies is disgusting!! its stupid with how much they expect you to learn and remember! one human and one physical is more than enough for me!! i put predictions up somewhere on here, just don't know which posts it is though!! i think TNCs may come up for D&G as well as development issues and LDCs. what you doing your essay on? world cities or D&G?

If not out-of-town retailing for WC 40 marker, what else could pop up as the 40 marker?! :O

surface waves cause the most destruction as they are nearer the surface. They're slower than P and S waves but cause the land to move sideways and up and down

ino right, just too much to learn.... deffo gonna do the smaller questions for D&G + essay on world cities, more confident on that (:

you would describe the three different waves, Primary, secondary and i think the third is surface waves? I think this came up last paper or the one before so don't think it will come up.