WHAT DO MAGNITUDES MEAN
Magnitude 1 and 2 – Not felt by people, detected by instruments.
Magnitude 3 – Silght tremor felt by people indoors, likened to a passing lorry.
Magnitude 4 – Can crack walls, disturb trees.
Magnitude 5 – Moves furniture, damages poorly built buildings.
Magnitude 6 – Moderate to major damage, chimneys and walls collapse.
Magnitude 7 – Major damage to all buildings, ground cracks, landslides can occur.
Magnitude 8 – Total destruction, waves can be seen travelling through the ground
Read more and watch video
http://www.dailymail.co.uk/sciencetech/article-2618795/The-month-shook-world-Incredible-time-lapse-reveals-planet-rocked-record-breaking-earthquakes-April.html
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