Final answer:
An earthquake is the shaking of the ground caused by natural sources like ruptures of faults and/or volcanic activity. Tectonic earthquakes are caused by ruptures of faults in the Earth's crust. The Ring of Fire is the place where more than 90% of the world's earthquakes occur.
Step-by-step explanation:
Earthquake: Shaking of the ground caused by natural sources like ruptures of faults and/or volcanic activity.
Tectonic Earthquake: Caused by ruptures of faults in the Earth's crust.
Ring of Fire: Place where more than 90% of the world's earthquakes occur.
Man-made Earthquakes: Caused by explosions, extraction of oil, and nuclear testing.
Focus: Place where earthquakes start.
Learn more about earthquakes