Earthquake 2018: What is an earthquake? What is the source of an earthquake called? | 9/24/2018 | Staff
maye (Posted by) Level 3
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How do we measure earthquakes?

Scientists use a device called a seismograph to detect earthquakes through the recording of electromagnetic sensors being turned into electrical charges.

Instrument - Waves - Series - Zig-zags - Sheet

The instrument records the seismic waves as a series of zig-zags on a blank sheet of paper.

An earthquake’s size is measured by its magnitude and...
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