Hello,
My name is Sophie, I am 11 years old and I want to build a seismometer 
system to investigate earthquakes. I live in England so most big 
earthquakes I would like to detect are a long way away but I would also 
like to detect the blasting in the quarry about a mile away if I can.
I have read lots of interesting things on the web page but am not sure 
what sort of sensor would be best for me and dad to make. Can you help 
me decide which sort to build
Thanks
Sophie
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