Heat Transfer by Convection
Heat Transfer by Convection: Overview
This topic covers concepts, such as, Thermal Convection, Transfer of Heat by Convection in Air, Sea Breeze, Land Breeze & Difference between Heat Transfer by Thermal Convection and Radiation etc.
Important Questions on Heat Transfer by Convection
Wind that blows from sea to land during day-time is called _____.
Explain which mode of heat tranfer causes sea breezes and land breezes.
The mode of heat transfer that does not require a medium is
How does a thermos flask prevent heat from escaping or coming in : by conduction, convection or radiation. Explain.
Mini was excited to get both an air conditioner and a room heater installed in her room of their new house. The electrician installed the air conditioner near the top of the wall, and room heater at the bottom of the wall. Explain why.
Two test tubes full of water are heated -one from below and the other near the top. In which case will the water heat up faster? Why?
Why do hollow bricks used to construct the outer walls of buildings help in keeping them cool or warm?
What causes sea and land breezes in coastal areas? Explain with the help of the diagram.
In which medium does heat travel by convection? Explain with the help of a diagram, the formation of convection currents in water when it is heated from below.
What is the fastest method of heat transfer?
In which three ways is heat transferred?
Why are you advised to carry an umbrella when you go out in the Sun on a hot summer day?
If you keep one hand above the flame of a burning candle and the other hand on the side of the flame, which feels hotter? Why?
Why does a hot pan cool down when removed from the fire?
Which of the following does not require a medium?
Name one natural phenomenon that occurs due to convection currents in air.
When you heat water in a pan , by which mode does most of the heat travel in water -conduction, convection or radiation ?
Heat from the Sun reaches us by convection.
