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Page No 111:
Question Look at the Picture :
Answer:
Disclaimer: This section aims to enhance the students’ imagination and observation skills. Considering the sustenance of this process, the answer to the questions has not been provided.
Question Tell:
- Do you ride a bicycle? If yes, where all do you go on it?
- How do you come to school?
- How do your family members go to work from home?
- What problems can we have from smoke coming out of vehicles?
Answer:
- Disclaimer: This question has to be answered by the students based upon their own experience. Hence, the same can vary from one student to another. Considering this, the answer to the question has not been provided.
- Disclaimer: This question has to be answered by the students based upon their own experience. Hence, the same can vary from one student to another. Considering this, the answer to the question has not been provided.
- Disclaimer: This question has to be answered by the students based upon their own experience. Hence, the same can vary from one student to another. Considering this, the answer to the question has not been provided.
- The smoke coming out from the vehicles can cause pollution of air. This polluted air can cause respiratory disorders in animals and human beings. The harmful substances present in smoke can also make rain water impure.
Page No 115:
Question Find Out and Write:
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? | | | |
The rates of petrol are different in each city. The rates of petrol and diesel in Chennai are given here. Look at the table and answer the questions.
Oil | Rate of one litre in 2002 | Rate of in one litre 2007 |
Petrol | Rs 28 | Rs 47 |
Diesel | Rs 18 | Rs 33 |
- In ___ years the rate of petrol went up by ___ rupees. The rate of diesel increased by ___ rupees.
- What was the difference in the rates of petrol and diesel in the year 2007?
Answer:
- In 5 years the rate of petrol went up by 19 rupees. The rate of diesel increased by 15 rupees.
- (b) The difference in the rates of petrol and diesel in the year 2007 is Rs 14.
Page No 117:
Question Think and Discuss:
- What would happen if you don’t get petrol or diesel for a week in your village or town?
- Suggest some ways to save oil.
Answer:
- imagination and thinking ability. Considering the sustenance of this process, the answer to the same has not been provided.
- Some ways to save oil are:
(i) Using public transport such as buses and trains instead of private vehicles such as cars and bikes
(ii) Switching off the engines when we stop your vehicles at traffic signals
(iii) Using some other alternatives of energy such as sunlight (solar energy) that would last longer
Answer:
Disclaimer: This section comprises of questions which calls for the process of one’s own observation and gathering information. Considering the sustenance of this process, the answer for the same has not been provided.
Page No 119:
Question Find Out from Your E:
Answer:
Disclaimer: This section aims at increasing the creativity of the students. Hence, the students are advised to do this section themselves.
Question What we have learnt:
- Imagine that a company has given you a chance to design a new vehicle like a mini bus. What kind of vehicle would you design? Write about it. Draw a picture and colour it.
- While making the design, who did you plan to take care of:
old people __________________
children __________________
those who cannot see? __________________
- Look out for news reports on oil. Cut these and make a collage. Put up a chart in your classroom. Also write your own views on these reports.
- Make a poster with a message on saving fuel. Write a slogan too. Where would you like to put up this poster?
Answer:
- Disclaimer: This section aims at increasing the creativity of the students. Hence, the students are advised to do this section themselves.
- Disclaimer: This section aims at increasing the creativity of the students. Hence, the students are advised to do this section themselves.
- Disclaimer: This section comprises of questions which calls for the process of one’s own observation and gathering information. Considering the sustenance of this process, the answer for the same has not been provided.
- Disclaimer: This section aims at increasing the creativity of the students. Hence, the students are advised to do this section themselves.