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Natural Phenomena: Lightning and Earthquakes

Learn about lightning and electrostatics, earthquakes and seismic activity, and how to protect yourself from these powerful natural phenomena

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following is used to measure the destructive energy of an earthquake?

  1. Vernier Caliper
  2. Richter scale
  3. Barometer
  4. Actinometer
  5. Doppler radar
Question 2 Multiple Choice (Single Answer)

Which of the following devices is used to test if an object is carrying a charge or not?

  1. Lightning conductor
  2. Metal conductor
  3. Electroscope
  4. Frequency counter
  5. Thermometer
Question 3 Multiple Choice (Single Answer)

_______________________ discovered that there is an electric discharge between clouds that produces a spark, and it is the electric spark between the clouds and the earth that appears as lightning.

  1. George Washington
  2. Issac Newton
  3. Thomas Alva Edison
  4. Thomas Jefferson
  5. Benjamin Franklin
Question 4 Multiple Choice (Single Answer)

Which of the following reasons is/are valid for thunderstorms usually occurring in summer?
(a) Thunderstorms are usually caused by the intense heating of ground surfaces during summer.
(b) The charges discharged to the ground as lightening, cause heating of air that is in their path.
(c) The heated air contracts rapidly, creating shock waves that can be heard as the rumble of thunder.

  1. Only a
  2. Only b
  3. Only c
  4. Only a and b
  5. All of the above
Question 5 Multiple Choice (Single Answer)

Which of the following can be charged easily by friction?
(a) Plastic scale
(b) Copper rod
(c) Inflated balloon
(d) Plastic straw

  1. Only a and b
  2. Only a and c
  3. Only a, b and c
  4. Only a, c and d
  5. Only a and d
Question 6 Multiple Choice (Single Answer)

Which of the following is the name given to the boundaries of the earth's plates where earthquakes tend to occur?

  1. Tectonic plates
  2. Epicentre
  3. Hypocentre
  4. Fault zones
  5. Focal depth
Question 7 Multiple Choice (Single Answer)

The lightning occurs because of the charges in the clouds. Which of the following statements is incorrect about how these positive and negative charges are created in the clouds?

  1. Bigger water droplets acquire the positive charges in them.
  2. Positively charged droplets move to the upper regions.
  3. A small region of positive charge is also created near the lower parts of the clouds.
  4. Opposite charges in clouds exert a very strong force of attraction between them.
  5. Air between clouds prevents the charges from coming too close.
Question 8 Multiple Choice (Single Answer)

The process of transfer of charge into the ground can be done. The electrical charge can be transferred from a charged object to another. This process is called ___________ and a device called _________ is used to pass this charge.

  1. static, electroscope
  2. grounding, electroscope
  3. earthing, electroscope
  4. earthing, metal conductor
  5. earthing, lightning conductor
Question 9 Multiple Choice (Single Answer)

Which of the following reasons is not valid for causing tremors on the earth?

  1. Volcanic eruptions
  2. Meteor hit
  3. Underground nuclear explosion
  4. Movement of earth's plates
  5. Being hit by lightning
Question 10 Multiple Choice (Single Answer)

Which of the following is not a correct explanation for the mantle?

  1. It extends to a depth of 2800 km below the crust.
  2. It is the central region between the core and the crust.
  3. The pressure inside it increases according to the depth.
  4. Its outer layer is of molten iron and nickel.
  5. All of the above
Question 11 Multiple Choice (Single Answer)

Which of the following is the correct explanation for a tsunami?

  1. It occurs along the edges of the tectonic plates.
  2. It is caused by earthquakes or volcanic activity occurring under the ocean.
  3. It is the tremor that produces waves on the surface of the earth.
  4. It is the vertical distance between the hypocentre and the epicentre.
  5. It generates seismic waves.
Question 12 Multiple Choice (Single Answer)

What device is used to protect building from lightning?

  1. Crescograph
  2. Anemometer
  3. Lightning conductor
  4. Barometer
  5. Thermometer
Question 13 Multiple Choice (Single Answer)

Which of the following measures can be taken to protect our property during earthquakes?
(a) Securing items that might fall.
(b) Repairing of deep cracks in the foundations or ceilings.
(c) Taking shelter in a car instead of under a tree or on an open field.
(d) Installing strong latches on cabinets.

  1. Only a, b and c
  2. Only a, b and d
  3. Only a, c and d
  4. Only b, c and d
  5. All of the above
Question 14 Multiple Choice (Single Answer)

The following options list some places in India that are classified in the Highest Risk Zone or the Zone 5 for earthquakes. Which of these does not belong to this group?

  1. Kashmir
  2. Western and Central Himalayas
  3. Indo-Gangetic basin
  4. North east Indian region
  5. Rann of Kutch
Question 15 Multiple Choice (Single Answer)

Which of the following objects will be able to attract pieces of paper from a flat surface after being rubbed with the materials given adjacent to them?
Objects Materials used for rubbing
a. Wooden scale Polythene
b. Plastic fork Flannel cloth
c. Steel spoon Woollen cloth
d. Glass rod Silk cloth
  1. Both a and b
  2. Both a and c
  3. Both b and c
  4. Both b and d
  5. Both a and d
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