Flow of heat – Long answer
- Explain how heat is conducted from the heated end of a rod to its cold end.
- With an example of each, explain the uses of good and bad conductors of heat.
- Describe the process of convection of heat.
- Explain with the help of diagrams how sea and land breezes are set up.
- Black objects absorb more heat than white or polished ones. Give two daily uses of this principle.
- Black objects radiate more heat than white objects. Give two everyday uses of this principle.
- Draw a neat labelled diagram of a thermos flask. How does it prevent transfer of heat by conduction, convection or radiation?
- 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 and why?
