美国大学面试的问题有哪些.

　　在美国留学申请中，如何做好美国大学面试的准备呢?很多人都会在美国大学面试前收集和总结一些常见的面试问题来进行练习，下面就来看看在美国留学申请中的一些可以准备的面试问题。

　　1. How many trees are in USA?

　　Think about the area of USA, fractional area occupied by trees, and space between trees (tree density).

　　2. Central Line

　　How many underground cars operate on the Central Line during rush hour?

　　Trains run approx. every 2 minutes. Each train has 8 cars. It takes about 80 minutes for a train to travel the length of the line.

　　3. How many ping pong balls can fit on a double deck London bus?

　　Think about volume of bus and volume of ball. An interesting exension is to consider packing fraction of spheres. The most ficient packing allows the spheres to take up 74% of the available volume.

　　4. How many piano tuners are there in New York?

　　Think about the population of New York, the fraction of people who have pianos, how often they are tuned and how long it takes a piano tuner to tune one piano.

　　5. How many people can fit inside a Mini?

　　Consider volume of car and volume of a person. One way is to consider person weighs 60kg and is made up of water with density 1kg/l or 1000kg/m³. The world record for a new BMW Mini is 21.

　　6. If you flattened out all the mountains and valleys in Wales would it be bigger than England. Is this a reasonable statement?

　　If you know that the area of is Wales 20,779 km² and the area of England is 130,410 km² then the average slope angle of land in Wales can be calculated. This assumes, of course, that England is flat. In the same way that a cos theta factor can be used for straight lines (eg. a triangle) it can also be used for areas. So arccos(22779/130410) gives us that the angle would have to be 81°.

　　7. How many tyres are there in use in the UK?

　　The answer needs to consider the number of cars (with 4/5 tyres?) and the number of buses/trucks/vans.

　　8. How many molecules come off a car tire with each revolution?

　　9. How many frames are in a Walt Disney animated movie?

　　10. What is the mass of a fully loaded Boeing 747?

　　11. What is the length in miles of all the Motorways in the UK?

　　12. How many square kilometers of surface would it take to supply the UK with all its energy needs if solar energy could be converted with 1% ficiency? Allow for night time, cloud cover, etc. The solar constant

　　is 1.35 kW/m².

　　13. If all the oxygen atoms breathed by Enrico Fermi over his lifetime are now distributed uniformly through the atmosphere, how many of these atoms do you breathe in with each breath?

　　14. Pick a nearby tree. Estimate the number of leaves on the tree.

　　15. How many electrons are there on the earth?

　　16. What is the probability of winning a million pounds on Who Wants to be a Millionaire by guessing? Assume everyone guesses, including the audience and the phone-a-friend.

　　17. If the conversion of electrical energy to light energy is 75% ficient, how many photons are emitted per second by a 40 watt fluorescent tube?

　　18. How many molecules will evaporate each minute from a saucepan of water lt to stand in the shade on a dry summer&aposs day?

　　19. How many hairs are there on a dog?

　　20. How much do the brakes of a car heat up in stopping at a set of traffic lights?

　　21. How many dimples are there on a golfball?

　　22. What is the mass of all the tennis racquets in the world?

　　23. A 10 year old car is badly rusted. If it rusted at a uniform rate, estimate how many iron atoms each day combine with oxygen to form rust?

　　24. If there were a mole of butterflies lying evenly distributed ever the earth, how thick a layer would they produce?

　　25. How long does it take for the electrons in a TV tube to get from the electron gun to the screen?

　　26. How many pieces of popcorn does it take to fill a room?

　　27. How many oxygen molecules that pass in and out of the lungs of an adult human in one day?

　　28. Estimate the mass of lead deposited per square metre per year in London due to airborne lead emitted from cars, if each litre of petrol contains about 2 grams of lead.

　　29. It is a clear day and the sun is shining straight down on an out door swimming pool. How much will the water temperature change in 5 minutes? The solar constant is 1.35 kW/m².

　　30. A helium-filled balloon is 50 cm in diameter. What is its diameter when taken to the bottom of the Atlantic ocean?

　　通过上面对美国留学申请中的面试问题介绍，相信对于很多计划准备美国大学网申的时候可以参考上面的信息来提前做好美国大学面试的准备和规划。