1. Describe the activity to show that the air expands on heating.
2. What are monsoon winds? Write a short note on it.
3. List the features of the following-
1. Thunderstorms
2. Cyclones
3. Tornadoes
4. What are some measures you can take to minimize the damage caused
What are the measures taken by a government?
5. How are the convection currents set up in the air?
to
6. How is wind circulation set up from the poles warmer latitude?
7. List some problems that rain can create.
8. What do you mean by the eye of storms?
9. How has advanced technology helped to handle calamities like cyc
Answers
Answer:
(i) Take an empty bottle. Actually the empty bottle contains air. Attach a rubber balloon to its neck as shown in Figure. Initially, the balloon is deflated. (ii) Place the bottle in a water bath containing boiling water. After some time you will notice that the balloon gets inflated as shown in Figure. The reason is that the air inside the bottle expands on heating and it fills the balloon. Thermal expansion of air (iii) Take the bottle out of the water bath and 7 allow it to cool by itself. We will notice that the balloon gets deflated and it collapses. This is because the air inside the balloon and the bottle, has contracted on cooling. The air from balloon passes to the bottle, so the balloon gets deflated.
2. Monsoon. A monsoon is a seasonal wind which lasts for several months. The word was first used in English for the seasonal rains in the Indian subcontinent. These rains blow in from the Indian Ocean and Arabian Sea in the southwest bringing heavy rainfall to the area.
8.the eye of the storm. The center of a tumultuous situation, typically a conflict of some kind. The phrase alludes to the center of an actual storm, such as a hurricane, which rotates around a central point.