Why is my MacBook Pro fan SO LOUD

Hi.

I have a MacBook Pro 10.1 (it costs a fortune).. But both the fans is running 6000rpm+ at normal SIMPLE webbrowsing.. it sounds like a small jet i taking of..

Why is that??

this is my hardware specs:

Modelname: MacBook Pro

Model-id: MacBookPro10,1

Processorname: Intel Core i7

Processorspeed: 2,3 GHz

processorer: 1

Cores: 4

L2-buffer (pr. Core): 256 KB

L3-buffer: 6 MB

Hukommelse: 8 GB

Boot ROM-version: MBP101.00EE.B02

SMC-version (system): 2.3f35

I could accept this noice if I ran a high usage program like Photoshop or similar..

Please help..