Some Natural Phenomena
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Question 1 of 4
1. Question
Which of the following is/are true for lighting?
1. Lighting is caused by the accumulation of charges in the clouds.
2. In 1752 Benjamin franklin, French scientist, showed that lightning and the spark
from clothes are essentially the same phenomena.CorrectIncorrect -
Question 2 of 4
2. Question
What is/are true for lightning conductors?
1. It is a device used to conduct lightning in the buildings.
2. A metallic rod, taller than the building, is installed in the walls of the building
during its construction.CorrectIncorrect -
Question 3 of 4
3. Question
Which of the following is/are true for earthquakes?
1. An earthquake is a sudden shaking or trembling of the earth which lasts for a
very short time.
2. It is caused by a disturbance deep outside the earth\’s crust.
3. The power of an earthquake is expressed in terms of a magnitude on a scale
called the Richter scale.CorrectIncorrect -
Question 4 of 4
4. Question
Which of the following is/are true for seismic waves?
1. The tremors produce waves inside the surface of the earth.
2. The waves are recorded by an instrument called the seismograph.CorrectIncorrect