Natural Disasters: Earthquake and Tsunami

The shaking or jerking motion of the earth surface vertically or horizontally is called an earthquake. This note has information about the causes of earthquake, earthquake-prone zones, the effects of the earthquake and different terms related to the earthquake.

Summary

The shaking or jerking motion of the earth surface vertically or horizontally is called an earthquake. This note has information about the causes of earthquake, earthquake-prone zones, the effects of the earthquake and different terms related to the earthquake.

Things to Remember

  • The shaking or jerking motion of the earth’s surface vertically or horizontally is called an earthquake.
  • The instrument that measures the intensity, origin and speed of the quake is called seismograph.
  • Causes of an earthquake are a volcanic eruption, underground bomb testing, large deposition of soil, etc.
  • The point inside the earth where the earthquake originates is hypocenter.
  • The point on the earth surface that is vertically above the hypocenter is called epicenter.

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Subjective Questions

Q1:

What is trade?


Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: <p>Trade refers to the act of buying and selling. It is the process of exchanging goods and services for money.</p>

Q2:

Explain the terms and conditions of trade.


Type: Long Difficulty: Easy

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Answer: <p>Trade is the core of the business. It helps to continue production and distribution of goods and services. It directs the goods from one place of consumption through the ownership transfer.</p> <p>According to A.N. Agrawala,&ldquo;Trade refers to the sale, transfer or exchange of goods or services.&rdquo;</p> <p>From the above definition it is clear that trade is the process of exchanging goods and services for money. It includes the act of supplying raw materials to the producers and finished goods to the consumers with the view to earn profit. The person who engages in the job of buying and selling is called trader.</p> <p>The following are the terms and conditions of trade:</p> <ol><li><strong>Types of goods</strong><br>The buyer/ importer and seller/ exporter must have a mutual agreement regarding the types of goods. It includes the names of goods, brand, size, color, batch, quality, etc. All those information should be mentioned by the buyer/ importer clearly.</li> <li><strong>Quantity of goods</strong><br>The quantity of goods means the number, weight and measurement of goods. The buyer/ importer while making order of the goods should clearly mention the required quantity of goods. On the other hand, the seller/ exporter should also dispatch the goods exactly as per the order.</li> <li>Price of the goods<br>The seller/ exporter should clearly mention the per unit price of the goods in the quotation letter. It is the major terms of foreign trade on the basis of which the buyer/ importer decides to make the order of goods.</li> <li><strong>Discount</strong><br>The seller/ exporter and buyer/ importer must be very clear about the types and rate of discount. It is the facility provided by the seller/ exporter to the buyer/ importer. The type of discount i.e. trade discount or cash discount and rate of discount should be clearly mentioned in the quotation.</li> <li><strong>Terms of payment</strong><br>The buyer/ importer and seller/ exporter should make an agreement regarding the terms of payment i.e. cash or credit. The seller/exporter may provide the facility of partial payment. If the seller/ exporter have provided credit facility for the whole amount, the duration of credit and payment date must be mentioned clearly.</li> <li><strong>Delivery</strong><br>The date, place and method of delivery should be clearly mentioned in the contract. The exporter should deliver the goods to the buyer/ importer according to the terms and conditions of the contract. Timely delivery of the goods ensures credibility and reputation of the seller/ exporter.</li> <li><strong>Insurance</strong><br>Insurance is the agreement made with the insurance company for compensating the loss of goods occurred due to the risk of fire, accident, theft or damage. It should be decided whether goods are to be insured then which one will be the insurer and who pays the insurance charges.</li> <li><strong>Packing</strong><br>The packing of goods is one of the important terms of trade. The buyer/ importer and seller/ exporter should agree upon the right type of packing. They should agree upon whether the packing charge is to be borne by the buyer/ importer or seller/ exporter. The proper packing protects the goods and makes the outlook of the product attractive.</li> <li><strong>Transportation</strong><br>The buyer/ importer should give clear instruction regarding the carriage of goods. In the absence of clear instruction, the seller/ exporter should dispatch the goods using appropriate means of transportation which can be safest, fastest and the cheapest. Further, both parties should be definite for the payment of carriage of goods.</li> </ol>

Q3:

Explain any five terms and conditions of trade.


Type: Short Difficulty: Easy

Show/Hide Answer
Answer: <p>Trade is the process of exchanging goods and services for money. It includes the act of supplying raw materials to the producers and finished goods to the consumers with the view to earn profit. The person who engages in the job of buying and selling is called trader.</p> <p>The following are the terms and conditions of trade:</p> <ol><li><strong>Types of goods</strong><br>The buyer/ importer and seller/ exporter must have a mutual agreement regarding the types of goods. It includes the names of goods, brand, size, color, batch, quality, etc. All those information should be mentioned by the buyer/ importer clearly.</li> <li><strong>Quantity of goods</strong><br>The quantity of goods means the number, weight and measurement of goods. The buyer/ importer while making order of the goods should clearly mention the required quantity of goods. On the other hand, the seller/ exporter should also dispatch the goods exactly as per the order.</li> <li><strong>Price of the goods</strong><br>The seller/ exporter should clearly mention the per unit price of the goods in the quotation letter. It is the major terms of foreign trade on the basis of which the buyer/ importer decides to make the order of goods.</li> <li><strong>Discount</strong><br>The seller/ exporter and buyer/ importer must be very clear about the types and rate of discount. It is the facility provided by the seller/ exporter to the buyer/ importer. The type of discount i.e. trade discount or cash discount and rate of discount should be clearly mentioned in the quotation.</li> <li><strong>Terms of payment</strong><br>The buyer/ importer and seller/ exporter should make an agreement regarding the terms of payment i.e. cash or credit. The seller/exporter may provide the facility of partial payment. If the seller/ exporter have provided credit facility for the whole amount, the duration of credit and payment date must be mentioned clearly.</li> </ol>

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Natural Disasters: Earthquake and Tsunami

Natural Disasters: Earthquake and Tsunami

Earthquake

http://i.imgur.com/cx6Hfjo.jpg

The shaking or jerking motion of the earth surface vertically or horizontally is called an earthquake. The Hypocenter is the point inside the earth where the earthquake originates. The Epicenter is the point on the earth surface that is vertically above the hypocenter.

http://i.imgur.com/RoB4QJz.jpg

The seismic waves are the ways or the vibration traveled in a different direction from the epicenter. A seismograph is an instrument that measures the intensity, origin and speed of the earthquake. The intensity of an earthquake is measured in Richter scale.

Causes of earthquake:

  1. The adjustment of the continental plates inside the earth by colliding causes tremor at the hypocenter.
  2. A volcanic eruption.
  3. Large deposition of soil by the rivers causes huge pressure on the earth.
  4. Underground bombs testing.

          http://i.imgur.com/a5atmOF.jpg

Effects of earthquake:

  1. Destruction of the building, roads, electricity supply, etc.
  2. Affects on human and animal lives.
  3. Causes landslides and mudslides.
  4. Cracking the earth’s crust.
  5. Formation of the lake, small hills etc.

 

 

Tsunami

A tsunami is a series of water waves caused by the displacement of a large volume of a body of water, usually a sea or ocean. Tsunamis are often barely visible when they are in the deep sea. This makes tsunami detection in the deep sea very difficult. A tsunami can travel at well over 970 kph (600 mph) in the open ocean. A tsunami may be less than a foot (30 centimeters) in height on the surface of the open ocean. But the powerful shockwave of energy travels rapidly through the ocean as fast as a commercial jet. Once a tsunami reaches shallow water near the coast, it is slowed down. The top of the wave moves faster than the bottom, causing the sea to rise dramatically.

Causes of Tsunami:

  1. Earthquake
  2. Volcanic Eruption
  3. Underwater Explosions
  4. Meteorite Impacts

Effects of Tsunami:

  1. Flooding
  2. Devastating of property.
  3. Loss of lives
  4. Basic infrastructures destruction.

 

 

Lesson

Geographical Studies of our Earth

Subject

Social Studies

Grade

Grade 10

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