What are the answers to the worksheet on earthquakes, volcanoes, droughts, floods, and natural calamities?

Here are the answers to your worksheet:

A. Tick (✓) the correct answer.

1. The study of earthquake is called seismology.
2. The intensity of an earthquake is measured on the Richter scale.
3. Landslides occur in hilly areas.
4. Tsunami means harbour waves.
5. Deforestation is a major cause of landslides in hilly areas.

B. Write 'T' for true and 'F' for false statements.

1. Earthquakes occur because of deformation. T
2. Molten rocks coming out of a volcano are called lava. T
3. In severe drought people die due to shortage of food. T
4. Diseases break out after most natural calamities like floods. T
5. A tsunami takes place under the sea. T

C. Give reason for the following.

1. People suffer from trauma after a natural calamity because they may experience loss of loved ones, homes, livelihoods, and a sense of security, leading to severe emotional and psychological distress.
2. Deforestation increases the chances of landslides in hilly areas because tree roots help bind soil together. When trees are cut down, the soil becomes loose and unstable, making it more susceptible to erosion and landslides, especially during heavy rainfall.
3. Government must help people at the time of natural calamities because it has the resources and responsibility to provide immediate relief, rescue operations, medical aid, food, shelter, and long-term rehabilitation to affected populations, ensuring their safety and recovery.