Earthquake Impact and Measurement

The video explains earthquakes, their unpredictability, and the damage they cause. It covers the Richter scale, historical earthquakes in India, and secondary effects like tsunamis. The Richter scale's non-linear nature is highlighted, showing how magnitude relates to energy release.

What immediate actions did John's father suggest during the earthquake?

• Go out into open space

• Turn off all electrical appliances

• Stay inside and hide under a table

• Call emergency services

Why is it difficult to predict earthquakes accurately?

• They are less frequent than other natural disasters

• They are sudden and have complex causes

• They are caused by unknown factors

• They occur only in remote areas

Which Indian regions experienced major earthquakes in 2001 and 2005?

• Bihar and Assam

• Maharashtra and Rajasthan

• Kerala and Tamil Nadu

• Gujarat and Kashmir

What is the Richter scale used for?

• Measuring the speed of wind

• Calculating the depth of oceans

• Measuring the magnitude of earthquakes

• Predicting weather patterns

What magnitude on the Richter scale is considered destructive?

• Above 7

• Above 5

• Above 8

• Above 6

What additional natural disasters can earthquakes trigger?

• Droughts

• Floods, landslides, and tsunamis

• Volcanic eruptions

• Hurricanes and tornadoes

What was the impact of the 2004 Indian Ocean tsunami?

• No impact on India

• Significant losses in coastal areas

• Only affected the western coast of India

• Minimal damage to coastal areas

How does the Richter scale differ from a linear scale?

• It measures temperature

• It is logarithmic, not linear

• It is a linear scale

• It measures time

How much more destructive energy does a magnitude 6 earthquake have compared to a magnitude 4 earthquake?

• 1,000 times more

• 100 times more

• 10 times more

• 1.5 times more

What is the main reason earthquakes are considered unpredictable?

• They are rare events

• They are caused by human activities

• They have no warning signs

• They occur only at night