Samacheer Kalvi 6th Geography Term 3 Unit 3 Social Book Back Question and Answers:
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Geography – Term 3 Unit 3
I. Answer in brief :
1. Define Disaster.
- A disaster is a serious disruption of the functioning of a society involving human and material loss.
- Disaster is broadly classified into natural and man-made disasters.
2. What were the subjects taught at Nalanda University?
- Vedic literature
3. Write a short note on ‘Thunder and lightning’.
- Thunder is a series of sudden electrical discharge resulting from atmospheric conditions.
- This discharge results in sudden flashes of light and trembling sound waves which are commonly known as thunder and lightning.
4. Highlight the achievement of Guptas in metallurgy.
- The achievement of Guptas in metallurgy was the Mehrauli Iron pillar. King Chandragupta installed it in Delhi.
- This pillar has lasted through the centuries without rusting.
5. Name the three kinds of tax collected during the Harsha’s reign.
II. Answer in a paragraph:
1. What is flood? Explains the do’s and don’ts during floods.
(i) An overflow of a large amount of water, beyond its normal limits, especially on the rainfed areas is called a flood.
(ii) During floods – Do’s.
(a) To find out the settlement area whether it is to be affected by flood or not.
(b) Keeping radio, torch and additional batteries, storing drinking water, dry foods items, salt and sugar. Safeguarding materials like kerosene, candle, match box, clothes and valuable things.
(c) Keeping umbrella and bamboo poles.
(d) Keeping first aid box and strong ropes to bind things.
(e) To dig canals from the farm land, to drain the excessive water, keeping sand bags etc.
(iii) During floods – Don’ts.
(a) Try to connect electricity once it is cut.
(b) Operate vehicles.
(c) Swim against floods.
(d) Avoid going on excursions.
(e) Neglect flood warning messages.
Make a flood plan:
On a piece of paper, draw your village/town map roughly. Locate your home, school and playground on the map. Then draw the rivers/stream/lake and road, located nearest to your village/town. Answer the questions listed below.
1. Which areas and roads would be mostly affected by flood?
- Floods can happen on flat or low-lying areas when water is supplied by rainfall or snowmelt more rapidly than it can either infiltrate or run off.
- The excess accumulates in place, sometimes to hazardous depths.
- Surface soil can become saturated, which effectively stops infiltration, where the water table is shallow, such as a floodplain, or from intense rain from one or a series of storms.
- Infiltration also is slow to negligible through frozen ground, rock, concrete.
- Areas near water bodies such as lake, river, etc. are also affected by flood.
2. Can you find out evacuation route?
- In order to avoid great losses and fatality affected by flooding, an evacuation route is to be found out.
- A study of non physical mitigation, i.e. to establish some alternatives of evacuation routes to some temporary shelters is to be conducted well in advance.
- A research on the selected several evacuation routes, with the help of Geographic Information System (GIS) can be done.
- The research can be conducted by analyzing the flood magnitude, inundation area, population density, settlement concentration, temporary shelter locations, topographic condition and existing road system.
3. If you live in a flood-prone area, what are the precautionary measures you hav e to take during heavy rains?
- Listen to the weather reports from Radio, TV, etc.
- Do not wait until you see rising water.
- Get out of low areas subject to flooding.
- If driving, do not drive through flooded roadways!
Be prepared to evacuate:
- Identify places to go. .
- Identify alternative travel routes that are not prone to flooding.
Protect your property:
- Move valuables and furniture to higher levels.
- Disconnect electrical appliances. Do not touch them if you are wet or standing in water.
- Bring outside possessions indoors or tie them down securely.
- Seal vents to basements to prevent flooding.
4. What are things that you should have in your ‘Go- Kit’ / ‘Drive -away kit’?
‘Go-Kit’ – emergency kit should include some of the following items:
- Drinking water containers.
- Food that does not require cooking.
- Medications and first aid supplies.
- Clothing, Blanket, toiletries.
- Battery-powered radio.
- Extra batteries.
- Important documents: insurance papers, medical records, bank account numbers.
5. Make a Hst of emergency numbers. (‘Go-kit’-A kit prepared by and for an Individual
or group who expects to develop It in alternative locations during emergency)
The following are the list of Emergency help line telephone numbers:
- Police – 100
- Police SMS – 9500099100
- Fire Service / Rescue Service – 101
- Traffic Police – 103
- Accidents – 100,103
- Traffic Police SMS – 9840000103
- Ambulance Service – 102, 108
- Women Help line – 1091
- Child Help line – 1098
- Emergency & Accidents – 1099
- Senior Citizen Help line – 1253
- Emergency Help line in National Highways – 1033
- Coastal Emergency Help line – 1093
- Blood Bank Emergency Help line – 1910
- Eye Bank Emergency Help line – 1919.