Page 4 - LESSON 12 MM1

• A series of large and high waves caused by an earthquake or volcanic
eruption under the sea.

• Submerge an entire coastal area.
• December 2004, Kerala, Puducherry and Tamil Nadu were hit by a
tsunami that caused great damage to life and property.
• .
Landslides:

• A huge mass of land or rock collapses or breaks off from a mountain.
• Destruction to life and property at the foot of the mountains.
• Blocks the flowing water.
• Caused by earthquakes, erosion and by some human activities such as
deforestation, heavy vibrationsof machines etc.

Safety measures:
• People should avoid driving during a landslide.
• Listen radio for any information regarding disasters.
People should move to safer places

Volcanic eruptions:

• When magma comes out of a volcano, it leads to a volcanic eruption.
• Volcanoes also exist in oceans.
• Volcanoes are of three types- extinct, active and dormant.