Textbook Solutions: Natural Disasters | Be an Explorer 5: Book Solutions, Notes & Worksheets - Class 5 PDF Download

Quick Zone

A. Tick (✔) the correct option to complete the sentence.

1. __________ gives rise in epidemics.
(a) Earthquakes
(b) Floods
(c) Avalanches
(d) Droughts
Ans: (b)

2. The 'Fani' is a __________.
(a) cyclone
(b) earthquake 
(c) volcano
(d) landslide
Ans: (a)

3. The severity of an earthquake is measured on the __________.
(a) seismograph
(b) barometer
(c) rain gauge
(d) Richter scale
Ans: (d)

4. In India, __________ occurs in the event of a weak monsoon.
(a) earthquakes
(b) tsunami
(c) drought
(d) flood  
Ans: (c)

B. Fill in the blanks.

1. ___________ are masses of snow, ice and rocks that fall rapidly down a mountain side. 
Ans: Avalanches

2. ___________ results in crop failure and food shortage. 
Ans: Drought

3. ___________ kit should be kept ready during disasters. 
Ans: First aid

4. ___________ are huge waves that occur due to an earthquake under the sea or ocean.
Ans: Tsunami

C. Write (T) for true statements and (F) for false statements.

1. The sudden shaking of the earth is called landslide. 
Ans: False
The sudden shaking of the earth is called an earthquake, not a landslide.

2. Earthquakes can be easily predicted. 
Ans: False
Earthquakes cannot be easily predicted.

3. Trees plantation helps in controlling floods and droughts. 
Ans: True
Trees plantation does help in controlling floods and droughts.

4. Cyclones are referred as typhoons in the Pacific Ocean.      
Ans: True 
Cyclones are referred to as typhoons in the Pacific Ocean.

D. Match the columns A and B.

Ans:

Writing Zone

Answer the following questions.

1. What is a natural disaster? 
Ans: A natural disaster is an event caused by the imbalance of nature that leads to widespread destruction, loss of life, property, and disruption to society. Examples include earthquakes, floods, cyclones, volcanic eruptions, droughts, landslides, forest fires, etc.

2. What are the effects of an earthquake? Write the precautions also.
Ans: Earthquakes can cause buildings to collapse, landslides, and tsunamis. Precautions during an earthquake include taking shelter under a strong table or bed, moving out of buildings to open areas, not using lifts, and listening to warnings for evacuation.

3. What are the causes of floods? 
Ans: Floods can be caused by excessive rainfall over an area, leading to rivers overflowing. Landslides that block rivers and the sudden melting of snow on mountains can also contribute to flooding.

4. Write some measures to tackle a drought. 
Ans: Measures to tackle a drought include avoiding deforestation and encouraging afforestation, growing more trees, practicing rainwater harvesting, water conservation methods, cultivating drought-resistant plants and crops, and avoiding water wastage.

5. What is a landslide? 
Ans: A landslide occurs due to heavy rainfall or earthquakes, leading to cracks in rocks and the rapid downward movement of a mass of soil, rocks, and debris on a slope or mountainside.

6. What are cyclones? Name any two cyclones that have occurred in India.
Ans: Cyclones are violent storms with heavy rain and strong winds. Two cyclones that have occurred in India are Hudhud and Fani.