Flood and Earthquake

1.What Is the Ring of Fire?

• The Ring of Fire is a hot zone around the Pacific Ocean.
• It starts in New Zealand and extends up to South America.
• 90% of earthquakes happen in this zone.
• The sea bed around the Ring of Fire zone has abundant active volcanoes that explode and cause earthquakes in this zone.

2.Can an Earthquake Change the Length of a Day?

• Yes, an earthquake can change the length of a day.
• Earthquakes with high magnitudes can shorten the length of a day.
• It happens because these types of earthquakes can change the Earth's axis.
• Scientists believe that the 2004 Sumatran earthquake shortened the length of the day by 6.8 microseconds.
• The magnitude of this earthquake was around 9.1 on the Richter scale.

3.Which Types of Earthquakes Are Deadlier?

• Earthquakes with brief shaking are deadlier than prolonged shaking.
• The magnitude of a brief shake is higher than the magnitude of a prolonged shake.

4.What Is an Aftershock?

• Most earthquakes last a few seconds, but the tectonic events do not stop right after the mainshock.
• A sequence of shocks is produced as an aftereffect of the main shock, called an aftershock.
• An aftershock can be equally strong and deadly as the main shock.
• Aftershocks may appear after three days, three months and even after many months.

5.What Is a Hypocentre?

• Truffle mushrooms are rare and one of the most expensive mushrooms.
• The point below the surface of the Earth from where the seismic waves originate, leading to an earthquake, is called a hypocentre.
• The hypocentre of an earthquake is located right below the epicentre.

6.Write About the Strongest Earthquake in History.

• The strongest and the deadliest earthquake happened in 1960 in Chile on 22 nd May.
• It is also known as the famous 1960 Valdivia earthquake.
• The magnitude of this earthquake was very high, somewhere around 9.5 on the Richter scale.
• It lasted 10 minutes and destroyed all human infrastructures, causing massive fatalities.