Chapter-15 some natural phenomena Extra Questions

Explanation:

The Richter Scale is a scale used to measure an earthquake's destructive energy. Since this scale has values from 1 to 10, it would, in fact, be recorded by a seismograph. Since earthquakes of magnitude greater than 5 are generally regarded as destructive, no, it is unlikely to cause significant damage. 

Explanation:

The human body is an electrical conductor. Our body sends its charges to the ground when it is touched by a charged body. As a result, a charged body loses its charge in this manner. 

Explanation:

Because they both carry the same type of charge, a charged balloon repels another charged balloon. However, due to their opposing charges, charged and uncharged balloons attract one another. We are aware that opposite charges attract and same charges repel one another.

Explanation:

An electroscope is a tool for determining a body's charge. It operates on the premise that unlike charges attract one another while like charges repel one another. It is made up of a metal rod that has a thin leaf or strip of metal attached to the bottom.

A metallic cup or disc houses the metal rod at the top. A glass box serves as protection for the metal leaf and the rod's bottom. The metal leaves open out or diverge when a charged ebonite or glass rod is touched to the electroscope's disc. 

The extent of the divergence is influenced by the electroscope's charge level. Repulsion, which is the sure way to tell if a body is charged or not using an electroscope, occurs when the metal strips repel one another. 

Explanation:

To keep ourselves safe, we will take the following precautions: 

(i) Move to a wide area. Choose a clean location far from trees, buildings, and overhead power lines. To the ground, fall. 

(ii) We won't be able to get out of a car or bus. Take a leisurely drive to a clear location and remain there until the earthquake stops.

Explanation:

When the charges on the two bodies are the same, they repel one another, but when the charges are different, they attract one another.

Explanation:

The aggravation that takes place within the earth's highest layer, or hull, is what causes the seismic tremors. 

Explanation:

The Electric Eel uses electric discharges to communicate with other Electric Eels, shocks its prey, and dissuades enemies. 

Explanation:

In 1752, a scientist from the United States named Benjamin Franklin demonstrated that amber sparks and lightning were the same thing. 

Explanation:

The charge that was earthed from the body loses its charge. A body like this is called a "discharged" body.

Explanation:

A charged body is grounded when we touch it with our hands. As a result, the body loses its charge as the charges flow to the earth.

Explanation:

Because lightning can strike telephone cords, it is not safe to use a phone during a thunderstorm.

Explanation:

Bright light and sound are produced when the positive charges on the ground and the negative charges in the clouds meet. This appears to be lightning. 

Explanation:

Kashmir, the Western and Central Himalayas, the entire North East, the Rann of Kutch, Rajasthan, and the Indo-Gangetic Plane are India's weak spots. The danger zone includes some parts of South India as well.

Explanation:

The seismograph is made up of a moving rod that starts moving when there are tremors. The vibrating rod has a pen attached to it that records the seismic waves on paper that moves under it.

Explanation:

Mud or timber are preferable to heavy construction materials in seismically active areas. To minimize damage in the event of a fall, the roofs should be as light as possible. 

Explanation:

Mud or timber are preferable to heavy construction materials in seismically active areas. To minimize damage in the event of a fall, the roofs should be as light as possible. 

Explanation:

Vapor clouds are made up of very small droplets of water. Through friction, an electric charge forms on a cloud patch. The cloud's upper layers are positively charged, while the cloud's lower layers are negatively charged. 

Explanation:

Cabinets and shelves should be secured to the walls to prevent them from falling, making the house safer in the event of a earthquake. Hanging water heaters, photo frames, and clocks with care is important.

Explanation:

Electric discharge can take place between two clouds, between clouds and the ground, or even between humans and clouds. These lightning bolts can kill you.

Explanation:

In order for the lightning charge to flow deep into the earth rather than through the structure, it is essential that the lower end of the lightning conductor be in good contact with the ground.

Explanation:

When touched by hand, a charged object loses its charge because the charge flows to the earth through the human body. Earthing is the term for this.

Explanation:

There are numerous uses for lightning: 

● Ozone is made in the natural world by lightning. 

● The origin and development of life on Earth were significantly influenced by lightning.

● Nitrogen and oxygen combine to form the gases nitrate oxide and nitrogen dioxide as a result of the high electric charge discharge through the air.

Explanation:

Tidal waves are referred to as tsunamis in Japanese. They are massive waves that occur when seismic activity deforms the sea floor. When a tsunami hits the shore, it can be 10 to 20 meters high and produce a series of short waves. 

Explanation:

Yes, a charged object always draws an uncharged object closer. If the charge on another charged object is opposite, it will only attract it. Repulsion will occur if the body in question carries the same charge. 

Explanation:

Assuming that you are outside and a tremor strikes, we should a few precautionary measures take to safeguard ourself: 

● Pass on your structure and more to open regions. 

● Stay away from high-rise structures. 

● Stay away from electric poles, signposts, and trees. 

● Stay inside a vehicle if you are in it.

Explanation:

An electroscope is a tool for measuring an electric charge. 

Conclusion: An electroscope has a brass rod that goes through a tightly fitting cork in a glass bottle. A pair of fine gold leaves are attached to the lower end of the brass rod. In order to protect the gold leaves from any external electric charge, the lower half of the bottle is lined with tin foil and "earthed" by connecting it to the table. This kind of electroscope is referred to as a gold leaf electroscope. 

Working: The charge is moved to the gold leaves when a charged bar is contacted to the metal circle, and they separate. 

Explanation:

When you're at home: 

● Avoid standing next to windows. 

● Relax in bed. 

● Avoid standing near large, potentially falling objects. 

● Until the earthquake stops, hide under a table.

Explanation:

A T-storm has more dangers than just lightning, but that's the biggest one. 

You would rather not get found out in the open, where there are not many different items to draw in the bolts. Lightning seeks a straightforward path to ground, and open objects like a human being may provide that. 

Additionally, you should steer clear of single trees. They are a more alluring objective than we are, and assuming you are under one that gets hit, you could as well. In places like the Rockies, ridgelines above treeline are extremely dangerous, so if a storm is imminent, you should get below treeline as soon as possible. A grove of trees is much safer than an isolated one. Get into a low spot and hug the ground if you have to—it's better than being completely exposed. 

Naturally, being inside or in a vehicle is preferable. 

There are additional dangers. Tree branches can be broken off by strong winds. Additionally, the possibility of flash flooding in heavy rain. If it's really pouring while you're hiking in a narrow, prone to flooding area, find a way to get up higher quickly if you have to. Even if it isn't raining hard right now, it could still flood; what matters is how hard the rain is in the watershed.

Explanation:

A lightning rod is a device used to protect high-rise buildings from lightning.

During the building's construction, a metallic rod that is higher than the building's height is installed in the building's walls. The rod has two ends—one that is fixed in the ground and one that is kept out of the air. The transfer of electric discharge to the ground is made simple by this. 

Activity: 

Ask your parents about the significant harm these earthquakes have done to life and property. Take a few images from newspapers and magazines from that time that show the damage caused by these earthquakes. Write a brief report on the people's suffering before and after the earthquakes

Report: 

Report:

An earthquake is a brief, sudden trembling or shaking of the earth. It is one of the worst natural disasters and causes the most damage. It results in a significant loss of life and property. The following are some of an earthquake's negative effects:

● Buildings, dams, railway tracks, roads, and other structures are destroyed \

● Fire breaks out as a result of gas or electricity lines breaking. 

● It disrupts the water supply system by rupturing a groundwater pipe.

● In hilly and coastal regions, respectively, landslides and tsunamis occur.

● The sewer pipes have burst, releasing sewage water. 

● The areas are completely cut off from the rest of the world and cannot communicate with one another. 

● Floods are also caused by earthquakes.