Tag: when there is a disaster

Reforestation is a process of replanting trees in an area, reforestation is an effective way of checking floods, planting trees can reduce the height of flood by 20%.

• Earthquake is a sudden violent shaking of the ground, typically causing great destruction, as a result of movements within the earth's crust and the sudden release of energy in the Earth's lithosphere that creates seismic waves.
• A seismograph, or seismometer, is an instrument used to detect and record earthquakes. Generally, it consists of a mass attached to a fixed base. During an earthquake, the base moves and the mass does not.
  
• Hence earthquakes recorded by a seismograph.
• So, the correct answer is 'By a seismograph'.

• A tsunami or tidal wave, also known as a seismic sea wave, is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake.
• A tsunami can be caused due to various reasons. Among them, the most destructive Tsunamis are caused by earthquakes 
  
• Hence a tsunami can be caused due to Underwater earthquake.
  
• So, the correct answer is 'Underwater earthquake'.

• A tsunami or tidal wave, also known as a seismic sea wave, is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake.
• Mangroves are forests of salt-tolerant trees and shrubs that grow in the shallow tidal waters of estuaries and coastal areas in tropical regions. Mangroves protect shorelines from damaging storm and hurricane winds and tsunami.
• A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Coral reefs provide protection to our coasts from the tsunami, storms, and floods.
  
• Hence Coral Reefs and Mangroves can act as natural barriers to control Tsunami.
• So, the correct answer is 'Both A and B'.