1Two beakers are two thirds full of water with grains of red ink in each, and only one of them is heated. What difference is seen between the two beakers?
2How does rainfall happen through natural convection?
3Why does a hand held above a burning lamp feel hot while a hand held at the side or below it feels much less hot?
4Why does the flame from a burning object always point upward?
5Is a balloon blown up with warm air from the mouth rising into the air also an example of the principle of convection? Discuss and write your conclusion.
6Why does convection not take place in solids?
7Write the difference between a sea breeze and a land breeze.
8Why is convection more active on a hot day?
9Which type of convection is at work when a water heater or a geyser heats water, and why?
10What would happen on the Earth if convection did not take place in nature?