# What magnitude causes severe damage?

## What magnitude causes severe damage?

Earthquake magnitude

magnitude level category effects
5.0–5.9 moderate some damage to weak structures
6.0–6.9 strong moderate damage in populated areas
7.0–7.9 major serious damage over large areas; loss of life
8.0 and higher great severe destruction and loss of life over large areas

## How much damage would a magnitude 10 earthquake do?

A magnitude 9.0 earthquake on Richter scale is equivalent to release of energy by 25,000 nuclear bombs. So a 10.0 magnitude earthquake will be analogous to dropping over 4,00,000 nuclear bombs at a time. This is enough to destroy anything and everything on earth if it is a point source on the surface.

How much damage does a magnitude 7 earthquake do?

Intensity 7: Very strong — Damage negligible in buildings of good design and construction; slight to moderate in well-built ordinary structures; considerable damage in poorly built or badly designed structures; some chimneys broken.

### How much damage can an earthquake cause?

The average economic damage was just more than \$2.1 billion, while median damages were much less, at \$529 million. But earthquake damages fell into three general groupings. In eight cases, damages were less than \$50 million.

### What is the magnitude of an earthquake that can cause serious damage in areas across several hundred miles?

8.0-8.9
It is a base-10 logarithmic scale….What is the Richter Magnitude Scale?

Richter magnitude Description Earthquake effect
8.0-8.9 Great Can cause serious damage in areas several hundred miles across.

How much damage do earthquakes cause?

## What types of damage do earthquake cause?

The damage caused by earthquakes is from ground shaking, ground rupture, landslides, tsunamis, and liquefaction. Earthquake damage from fires is the most important secondary effect.

## What was the strongest earthquake in the US?

Answer: The strongest recorded earthquake in the United States was near Prince William Sound, Alaska, on March 27, 1964. Measuring 8.4 on the Richter scale , it killed 131 people and caused a 50-foot tsunami that traveled 8,445 miles at 450 miles per hour.

What were the 10 largest earthquakes?

10 biggest earthquakes in recorded history Valdivia, Chile, 22 May 1960 (9.5) This earthquake killed 1655 people, injured 3000 and displaced two million. Prince William Sound, Alaska, 28 March 1964 (9.2) Compared to the Chilean earthquake, this earthquake was less damaging: the resulting tsunami took 128 lives and caused overall US\$311 million Sumatra, Indonesia, 26 December 2004 (9.1) In terms of damage and loss of life, the scale of the disaster caused by the resulting Boxing Day Tsunami was enormous.

### How do you calculate magnitude of earthquake?

The magnitude of an earthquake is determined from the logarithm of the amplitude of waves recorded by seismographs. Adjustments are included in the magnitude formula to compensate for the variation in the distance between the various seismographs and the epicenter of the earthquakes.

### What is the strongest earthquake?

1960 Valdivia earthquake. The 1960 Valdivia earthquake holds the record the strongest earthquake in the world. The epicenter was located about 900 km south of Santiago and it was powerful enough to deliver 10.7 meters high Tsunami 10,000 km away from the epicenter.