Question

In a beautiful valley, there was a village. Trains passes from the village. The whistle and the sound of train mixed with the sound of waterfall seemed to be very pleasant to everyone. Children of that village loved to play near the railway track. On one very light foggy day, a group children found that a fish plate was missing from the track. Knowing this, all of the villagers became tensed. Aditya, one of the children suddenly put his ear to the line and tried to know whether a train is coming or not and he knew that a train is coming. He asked his friends to inform the railway cabin crew and he himself put off his red shirt and started running towards the train, waving his red shirt. Timely, the driver and cabin man got the information and a major accident hadn't taken place.
(1) Name the two physical phenomenon of science used by aditya.
(2) Why did Aditya use a red shirt instead of the other colours?
(3) What moral values were shown by Aditya?

Answer 1

1) One phenomenon is that sound travels faster in solids as compared to air. The other phenomenon is that red colour could be seen from a long distance even during a foggy day.
2) Aditya used red shirt because it gets scattered very less and can be seen from a long distance.
3) In this story, Aditya shows his cleverness to avoid the accident by informing the railway crew and stopping the train.

Answer 2

Answer:

This is why because, while during sunrise and sunset the light Ray have to travel in a larger part of atmosphere because it is closer to the horizon. So the component of the red light is least scattered because it has the longest wavelength and it is visible to us. Therefore , the sun and the sky appear red during sunrise and sunset.