1.媒體來源:
CNN
2.完整新聞標題:
How earthquakes are measured
地震是怎麼樣量測的？
3.完整新聞內文:
Earthquakes are measured using seismographs, which monitor the seismic waves
that travel through the Earth after an earthquake strikes.
地震是使用地震儀量測的。它是一種可以監測地震震波的儀器。
Scientists used the Richter Scale for many years but now largely follow the
"moment magnitude scale," which the U.S. Geological Survey says is a more
accurate measure of size.
科學家們以前都是使用芮氏地震規模當作標準，而且行之有年。
但是根據美國地質調查局表示，現在應該要使用更精確的「地震矩規模」。
也有人翻作「地震等級」、「地震震級」等。
Here are the magnitude classes:
下面這些是地震的分類：
Microearthquake: