S: Earthquakes by Liza Musgrave
FC: Earthquakes by Liza M
1: What makes an earthquake? An earthquake is the shaking of the ground caused by movements in the earth.
2: How do scientists measure an earthquake? Scientists use the Mercalli scale that measures intensity.
3: Do you always feel an earthquake? No, some earthquakes don't shake the earth enough to feel or see it.
4: How big does an earthquake have to be to cause damage? On the Mercalli Scale, to cause damage an earthquake has to be at least a VI (6).
5: Sources: Volcano and Earthquake, Eyewitness Books World Book Kids, Database