Pressure Winds Storms and Cyclones Class 8 Long Question Answer

Pressure Winds Storms and Cyclones Class 8 Long Question Answer

Pressure Winds Storms and Cyclones Class 8 Long Question Answer

Question 1.

Describe the process of lightning formation during a thunderstorm.

Answer:

Lightning formation during a thunderstorm occurs due to the buildup of electrical charges within the storm clouds. As water droplets and ice particles collide within the cloud, they create friction, leading to the separation of positive and negative charges. The upper part of the cloud becomes positively charged, while the lower part becomes negatively charged. When the difference in charge becomes great enough, it creates a discharge of electricity, resulting in a lightning bolt.

Examples from daily life

Question 1.

The Effect of Pressure in Everyday Objects

Answer:

One of the most relatable examples of pressure in daily life is seen in how we use tools. For instance, when driving a nail into wood, using the pointed end of the nail is much more effective than using the flat head. This is because pressure is defined as force per unit area.

When you apply force to the pointed end, the area over which that force is applied is much smaller, resulting in higher pressure. This high pressure allows the nail to penetrate the wood easily. Conversely, using the flat head would distribute the force over a larger area, resulting in lower pressure and making it difficult to drive the nail in.

Question 2.

Cyclone Preparedness and Safety Measures

Answer:

Cyclones, such as the Amphan cyclone mentioned in the textbook, highlight the importance of preparedness in our communities. For example, in cyclone-prone areas, local governments often conduct drills and provide resources to educate residents on how to respond during a cyclone.

This includes having emergency kits ready, knowing evacuation routes, and understanding the importance of moving to designated cyclone shelters. These measures can significantly reduce the loss of life and property during such natural disasters. The community's resilience in the face of cyclones show cases how awareness and preparation can mitigate the effects of these powerful storms.

Question 3.

Thunderstorms and Their Role in Agriculture

Answer:

In certain regions of India, localised thunderstorms, such as the Kalboishakhi in West Bengal, play a crucial role in agriculture. These thunderstorms occur just before the monsoon season and provide much-needed rainfall that supports the growth of kharif crops. Farmers eagerly anticipate these storms as they help in the ripening of crops like mangoes, which are vital for the local economy.

The phenomenon of thunderstorms, while sometimes dangerous, also brings essential moisture that sustains agricultural practices. This duality of thunderstorms-being both a potential hazard and a beneficial weather event-illustrates the complex relationship between weather patterns and human activity.