When are helicopters proved to be very useful?
Helicopters are proved to be very useful in the time of calamities for rescuing people and distributing food, water, clothes and medicines.
For Fun:
(i) Conduct a survey in your locality and find out how people commute to their respective workplaces using:
(a) more than two modes of transport
(b) more than three modes of transport
(c) stay within walking distance.
(ii) Mention which mode of communication you will prefer most in the following situations:
(a) your grandfather has suddenly fallen ill How will you inform the doctor?
(b) your mother wants to sell the old house. How will she spread this news?
(c) you are going to attend the marriage of your cousin for which you will be absent from the school for the next two days. How will you inform the teacher?
(d) your friend has moved out with his/her family to New York. How will you keep in touch on a daily basis?
How did people in the early days travel long distances? What changes came with the passage of time? [V. Imp.]
Answer the following questions briefly.
(a) What are the four means of transport?
(b) What do you understand by the term settlement'?
(c) Which are the activities practised by the rural people?
(d) Mention any two merits of railways.
(e) What do you understand by communication?
(f) What is mass media?
What do you mean by a site? Mention the natural conditions for selection of an ideal site? [V. Imp.]