earthquake scales Flashcards
what are three scales used?
richter, momentum magnitude (MMS), mercalli
what is the richter scale?
a logarithmic scale, energy released is porportional to the magnitude
what does the richter scale go up to?
10
how does the richter scale go up? (what is the difference between each number)
each number is ten times greater
in the richter scale, as unit increase by one how does energy increase?
times thirty
what does the MMS identify?
energy release
what does the MMS go up to?
10
what does the mercalli scale measure?
intensity and impacts
what does the mercalli scale go up to?
12
what is 12 on the mercalli scale equal to on the richter scale?
8.5
which scale is logarithmic?
richter
how far back do these records of earthquakes date back to?
1845
what is 7 on richter scale?
a very dangerous earthquake
/what is 12 on the mercalli scale
total destruction
