Overheating of my pc

A few time ago I heard the fan of my pc works without pauses; a problem of overheating, sure, in fact:

Internal themormeter confirmed

Where is the problem?

It was under my eyes: too many tabs of chrome opened at the same time!!

Too many of the browser opened cuncurrently

Ok, I have to try to close some of them... nothing to do!

I though: here I need of top which reserved me a surprise:

top is always the top!

 The real problem was skype (this morning I have followed a lesson of Swedish online via skype: an hour and three quarters).

I stopped it and ...yes! Everything is back as before...

skype now doesn't do any problem (from over 100% to the CPU to  2%)

Temperatures in the standard

Thanks top once again!