How we measure the magnitude of an earthquake Flashcards
How do we measure the magnitude of an earthquake
Seismometer
What was the Mercalli Scale
By Giuseppe Mercalli, 1902 to measure the intensity of the earthquake
What is the scale of Mercalli scale
1-12
What was the Richter scale
By Charles Richter in 1935, measure how much the ground shakes during an earthquake
What is the scale of Richter Scale and how much does it go up in
1-10
increases by x10 each time
What is an example of 2 on Richter scale
People in tall building may notice slight sway
What is an example of 3 on Richter scale
Cars parked in streets sway slightly
What is an example of 4 on Richter scale
Windows and loose objects rattle
What is an example of 5 on Richter scale
Trees sway, windows shatter
What is an example of 6 on Richter scale
Heavy furniture is jolted
What is an example of 7 on Richter scale
People find it difficult to stand up
What is an example of 8 on Richter scale
Smaller buildings collapse
What is an example of 9 on Richter scale
Ground cracks, fires might break out where gas mains are broker
What is an example of 10 on Richter scale
Bridges collapse
What is an example of 11 on Richter scale
Buildings collapse/sink into the ground
