Question

Give reasons:
1. Ventilators and windows are provided in a room

2. We prefer to wear white clothes in summer

3. In front of ambulance vehicle, the word 'AMBULANCE is writte as reverse​

Answer 1

Answer:

1.Ventilators and windows are provided in rooms for proper ventilation. The reason is that when we breathe out in a room, the air in the room becomes warm and impure. The warm air is less dense i.e. lighter, so it rises up and moves out through the ventilators.

2.We prefer white clothes in summer because white clothes reflect most of the sun's heat and absorb very little of the sun's heat and keeps our body cool. We prefer to wear black or dark coloured clothes in winter as dark clothes absorb most of the sun's heat and keep our body warm.

3.The vehicle in front sees a laterally erect image and perceives it correctly, hence giving side to the ambulance van. ... Word AMBULANCE is written in reverse because the mirror shows a characteristic of what we call "lateral inversion".

Explanation:

so here is ur answer dear..

Answer 2

Answer:

Reasons are as follows

Explanation:

1. Ans. When we are in a closed room, the air is not in constant circulation. Therefore, when we breathe, we take in the oxygen and release the carbon dioxide. Initially, the air is filled with carbon dioxide and no oxygen is left for breathing. So, there are ventilators and windows in a room so that the circulation of air goes on and we are able to breathe.

2. Ans. The color white absorbs less heat and reflects more heat. So, we wear white clothes in summer so that we can stay cool in summer and be comfortable.

3. Ans. The rear view mirror of cars is made of convex mirrors to magnify objects, but the image of the object is inverted. So, the words 'AMBULANCE' is written in reverse in front of vehicles so that people on the road can easily understand that an ambulance is passing.