Question

C Answer the following in not more than 100 words
1. Explain how land and sea breezes originate?
2. How would you demonstrate to a friend that gases expand when heated?
3. Explain why
(a) It is better to wear lighter shades in summer.
(b) Two thin sweaters feel warmer than one thick sweater
(c) Utensils are made of metal, while their handles are made of plastic?​

Answer 1

Answer:

1. The air over the ocean is now warmer than the air over the land. The land loses heat quickly after the sun goes down and the air above it cools too. ... This causes a small temperature gradient between the ocean surface and the nearby land at night and the wind will blow from the land to the ocean creating the land breeze.

2. I would blow up a balloon. Then I'll heat it carefully such that it doesn't get burst. The gas inside would expand thus the balloon will grow in size.

3. ( a ) We prefer to wear light coloured clothes in summer as light colours reflect light and heat and as a result of which light coloured clothes absorb less heat and become less hot giving us relief in summers.

( b ) Two thin sweaters are warmer than a thick sweater because there is a layer of air between them that doesn't allow our body heat to escape but it also it doesn't absorbs heat from the atmosphere and sweaters are made up of wool which is a insulator that itself doesn't allow our body heat to escape.

( c ) Cooking utensils are made uo of copper and aluminium because they are good conductors of heat and hence food can be easily cooked in them. Their handles are made up of plastic because plastic is poor conductor of heat due to which the handles do not get heated and we are sble to hold the utensil with their help.

Hope this Helps You!!