Tag: lightning safety

Questions Related to lightning safety

Earthquakes are caused mostly due to:

physics some natural phenomena seismic waves and tsunami causes of earthquakes origin of earth and its internal energy transfer of charge lightning safety

  1. landslide

  2. flood

  3. tsunami

  4. movement of Earth's plates

Show answer
Correct Option: D
Explanation:

Due to movement of Earth's plates, most of the earthquakes occur.

Fill in the blank:

Earth's plates are in _______ motion.

physics some natural phenomena seismic waves and tsunami causes of earthquakes origin of earth and its internal energy transfer of charge lightning safety

  1. circular

  2. vibrational

  3. rotational

  4. continual

Show answer
Correct Option: D
Explanation:

Earth's plates or tectonic plates are always in motion. They continuously move and sometimes collide with each other.

On $26^{th} January, 2001$, a major earthquake occured in _____ district of Gujarat.

physics some natural phenomena seismic waves and tsunami causes of earthquakes origin of earth and its internal energy transfer of charge lightning safety

  1. Uri

  2. Tangdhar

  3. Bhuj

  4. Kachchh

Show answer
Correct Option: C
Explanation:

On 26th January, 2001, an earthquake occurred in Bhuj district of Gujarat at a very high frequency on Richter scale.

Which among the following is the best conductor of electricity?

physics some natural phenomena transfer of charge lightning safety seismic waves and tsunami

  1. Oxygen

  2. Aluminium

  3. Carbon

  4. Wood

Show answer
Correct Option: B
Explanation:

Among oxygen, carbon, aluminium and wood, aluminium is a metal while others are non-metals. Metals are good conductors of electricity.

What happens when the lower end of the lightning conductor is not properly buried in the ground?

physics some natural phenomena transfer of charge lightning safety seismic waves and tsunami

  1. No earthing

  2. Building are protected

  3. Damage building and even life

  4. Both a & c

Show answer
Correct Option: D
Explanation:

Earthing is important to protect building from lightning. If proper earthing is not provide than it can damage building and dangerous for life also.

State whether given statement is True/False ?
Lightning conductor is made up of copper.

physics some natural phenomena transfer of charge lightning safety seismic waves and tsunami

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

Copper wires allow electric current to flow without much loss of energy. Hence, copper is a good conductor of heat and electricity. This is why copper wires are used in mains cables in houses and underground. And, a thick copper strip is used for lightning conductors on tall buildings like church spires.

Why earthing is important?

physics some natural phenomena transfer of charge lightning safety seismic waves and tsunami

  1. To protect us from electrical shocks.

  2. Transfers charge from a charged body to the Earth.

  3. Both A and B.

  4. Neither A nor B.

Show answer
Correct Option: C
Explanation:

Earthing is the process of transferring charges to the Earth. During lightning, if earthing is not proper, we will get electrical shocks if lightning strikes.

Which of the following is safest way to protect yourself from lightning?

physics some natural phenomena transfer of charge lightning safety seismic waves and tsunami

  1. Run to an open field

  2. Open an umbrella for cover

  3. Take shelter under trees

  4. Squat low on ground

Show answer
Correct Option: D
Explanation:

Squat low on ground is safest way to protect yourself from lightning.

A lightning conductor is made up of:

physics some natural phenomena transfer of charge lightning safety seismic waves and tsunami

  1. copper

  2. glass

  3. ebonite

  4. wood

Show answer
Correct Option: A
Explanation:

The main attribute common to all lightning rods is that they are all made of conductive materials, such as copper and aluminum. Copper and its alloys are the most common materials used in lightning protection. 
A lightning conductor is a metal rod or strap connecting the highest point on a building to the earth. Its purpose is to protect the building from a damaging discharge of electricity between the atmosphere and the building, that is, a lightning strike. 

Which of the following is the best thing to do during heavy lightning ?

physics some natural phenomena transfer of charge lightning safety seismic waves and tsunami

  1. Lying on the ground in an open place

  2. Going into the nearest water body

  3. Staying indoors away from metallic doors or windows

  4. Standing under a tall tree

Show answer
Correct Option: C