Alright dude, we’ll try and fit in as much aeroplane talk in science as possible.
Would you mind esplainin the science behind airplane ear? 
Re: For Arafat!
Yay! 
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what do u mean aeroplane ear, do u mean why our ears pop?
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^ jee. : D
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YAAAAY, im so excited about this thread, ask me any plane questions you have
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Okay, you know turbulence, can it be dangerous?
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ok sorry i was having my fish and chip.
so the question is why do out ears pop on airplanes. Air near to the surface of the earth is denser ( ie heavier) than the air high above the earth. We are above 10,000 ft the air becomes so thin that we cannot breathe. Therefore, the airplane is pressurised, to enable us to breathe. This of it like a balloon, if a small hole were to appear in the plane everything would start getting sucked out of the plane, just as if you put a needle in a balloon.
So when when are talking off, we have the denser heavier air in our inner canal. when we ascend, the surrounding air quickly becoming denser, and therefore pushes on the ear drum causing a popping feeling. However, our ear have a self correcting system, where our ears allow some of the air to escape into our throat. this is the reason when you yawn the popping in the air decreases.
During cruise our ears would have adjusted to the pressurised air in the cabin the reason why we do not feel popping when cruising. On descent, the thinner air is in our ears and get pushed by the heavier air in the cabin, again causing popping.
You would have particularly notices this on old aircraft, or smaller ones. The new planes such as the Beoing 777 ( used by emirates and PIA on its international flights) have better passenger comfort and have eliminated the popping. i think they so this by better management of the pressurized system in the cabin
hope that helps.
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^ 
a huge round of applause for arfi! that was awesome!!
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Turbulence. I did my Thesis on that. Turbulence is basically the random motion of air, and is very hard to predict. So what is turbulence? think of it as this. When you open the tap on you sink very slightly, the water flows down smoothly and clearly. But, when you open the tap fully the water becomes ' crazy' . this random motion is turbulence.
But turbulence is not dangerous, it is very very unlikely to cause a crash, the plane will feel like its shaking a lot, but its designed to flex a lot in flight.
turbulence can also be of use, for example helping to mix fluids in factories.
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lol thanks bbq.
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Thanks a lot arafat for answering. :k:
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no problem
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why the fuel for RC airplane i-e methanol and nitromethane r so expensive ? why RC airplanes require much more gas expense as compared electric planes ? why cant we use normal gas the 1 we use in real aeroplanes in rc raptors airplanes ?
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sorry dunno about your rc stuff.
but when crude oil is separated your get petrol, diesel, kerosene, and kerosene is used for aircraft fuel. it is very heavy, heavier than diesel meaning each drop gives of more energy than petrol. so maybe the rc model engine cannot handle this amount of energy or maybe teh engine would have to be designed in another way, but sorry i dont know much about toys.