Name: Protection Against Earthquakes
Uploaded: 2019-07-19
Duration: 2 min 28 s
Description: An earthquake is the shaking of the earth caused by the sudden movement of rock materials below the earth's surface. Let's see how we can protect ourselves during an earthquake.

Question

Match the column I with column II

Column 1	Column 2
(i) Richter Scale	(a) Sudden shaking of the earth
(ii) Waves recorder	(b) Conductor
(iii) Earthquake	(c) Earthing
(iv) Copper	(d) Earthquake under sea
(v) Transfer of charge to the earth	(e) Lightning
(vi) Tsunami	(f) Seismograph
(vii) Nitrogen Fixation	(g) Power of earthquake
(viii) Insulator	(h) Plastic

Accepted Answer

(i) Richter Scale (g) Power of earthquake

(i) to (g)
Richter scale is in the range of $1$ to $10$ which is proportional to the intensity or power of the earthquake.

(ii) Waves recorder (f) Seismograph

(ii) to (f)
Seismograph is used to measure and record the seismic waves produced due to the earthquake produced by the movement of tectonic plates.

(iii) Earthquake (a) Sudden shaking of the earth

(iii) to (a)
Earthquake is the sudden shaking of the earth caused due to the movement of earth's crust plates and generate enormous pressure.

(iv) Copper (b) Conductor

(iv) to (b)
Copper is a conductor. This metal is due to the presence of free electrons which move under the emf of the battery and cause flow of electricity.

(v) Transfer of charge to the earth (c) Earthing

(v) to (c)
Transfer of charge to the earth by the lightning rod placed on the top of the building which carry enormous charge through the earthing wire and prevents the damage to building.

(vi) Tsunami (d) Earthquake under sea

(vi) to (d)
Tsunami is the rise of high tides of water of the sea or ocean due to the disturbance or earthquake generated on the sea floor. This enormous energy get transfer to the sea waves and cause tsunami.

(vii) Nitrogen Fixation (e) Lightning

(vii) to (e)
Nitrogen fixation in the earth's soil can be done by the lightning. Lightning causes the dissociation of atmospheric nitrogen and reacts with oxygen to form nitrogen dioxides which on dissolving in water droplets give rise to nitrates which can be directly fixed into the soil.

(viii) to (h)
Plastic is an insulator which don't allow the electricity to pass through it.

Column 1 Column 2

(i) Richter Scale (g) Power of earthquake

(ii) Waves recorder (f) Seismograph

(iii) Earthquake (a) Sudden shaking of the earth

(iv) Copper (b) Conductor

(v) Transfer of charge to the earth (c) Earthing

(vi) Tsunami (d) Earthquake under sea

(vii) Nitrogen Fixation (e) Lightning

(viii) Insulator (h) Plastic

Column I	Column II
(i) Rubbing	(a) Electric Current
(ii) Moving Charge	(b) Seismic zone
(iii) Weak zone	(c) Static charge
(iv) Electroscope	(d) Repel each other
(v) Like charges	(e) Charge detecting device

Important Questions on Some Natural Phenomena

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