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What kinds of problems will we face, if the number of vehicles keeps on increasing? For example, more traffic on the road. Talk to your elders and write about it.
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Manju said, “Why doesn't everyone use a bus?” What do you think, why don’t people travel by bus?
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Suggest some ways to deal with the problems arising out of the growing number of vehicles.
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What are the benefits, if we switch off the engine of the vehicles at the red light on the road?
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| How much oil? | Scooter | Car | Tractor |
| How much petrol/diesel can be filled at a time? | |||
| How far can it go on one litre of petrol/diesel? |
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The rates of petrol are different in each city. The rates of petrol and diesel in Delhi are given here. Look at the table and answer the questions.
| Oil | Rate of one litre in 2002 (Oct) | Rate of one litre in 2007 (Oct) | Rate of one litre in 2014 (Oct) |
| Petrol | Rs 29.91 | Rs 43.52 | Rs 67.86 |
| Diesel | Rs 18.91 | Rs 30.48 | Rs 58.97 |
- In 2014, as compared to 2007 the rate of petrol went up by ______ rupees. The rate of diesel increased by ______ rupees.
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The rates of petrol are different in each city. The rates of petrol and diesel in Delhi are given here. Look at the table and answer the questions.
| Oil | Rate of one litre in 2002 (Oct) | Rate of one litre in 2007 (Oct) | Rate of one litre in 2014 (Oct) |
| Petrol | Rs 29.91 | Rs 43.52 | Rs 67.86 |
| Diesel | Rs 18.91 | Rs 30.48 | Rs 58.97 |
- What was the difference in the rates of petrol and diesel from 2002 to 2007 and 2007 to 2014?
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What is the price of petrol and diesel in your area?
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Why are the prices of petrol and diesel going up?
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In one month how much petrol and diesel is used in your home? What is it used for?
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- Where all is an oil used?
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- Where is diesel used? Find out.
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What would happen if you don’t get petrol or diesel for a week in your village or town?
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Suggest some ways to save oil.
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Have you ever collected dry wood or made cow dung cakes? How are they made?
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Do you know anyone who collects dry wood or leaves to be used for lighting a chulha?
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Who cooks food in your family? What about other families in your area?
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If they cook food using wood or upla (cow dung cakes), what difficulties do they face due to smoke?
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Can Durga use anything else instead of wood? Why not?
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1. In the year 1976, out of 100 how many houses used uple and wood?
2. Which was the fuel used the least in 1976?
3. In 1976, LPG and kerosene were used in ______ houses, and in 1996 this increased to ______. This means that in twenty years their use increased by________%.
4. Out of 100, how many houses were using electricity in 1996?
5. Which fuel was used the least in 1996? What percentage of houses used it in the year 1976?
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