Can you solve it..............
Answers
Answer:
I think both conduction and convection
Answer:
4. c.
5. a.
v. 1. Huge ice blocks are covered with sawdust and packed in jute sacks during transfer as they do not transfer the heat of the surrounding to the ice. Covering ice cubes with sawdust is one of the effective insulating method to prevent the ice cubes from melting during transportation
2.The metallic handle of a door feels colder than the wooden door on a cold day because metallic handle is a good conductor of the heat while wooden door is a bad conductor of the heat. Therefore, in case of the metallic conductor the process of conduction takes place and it gets cold because of the cold surrounding.
3. Table mats are usually made up of canes or plastic because canes or plastics are easy to clean and are also cheaper. They are also very convenient to use. Moreover, canes or plastics have a good durability.
4. Birds’ feathers provide remarkable insulation against the cold, and the oil that coats feathers also provides waterproofing, which is important since the only thing worse than being cold, is being cold and wet
5.The ventilators made close to the ceilings, because hot air is less dense compare cold air. Therefore, hot air moves up towards the ceiling and ventilators help to remove hot air from the room. It also secures the oxygen level in a crowded room by circulating air.