Question

What factors contribute to the ignition fires after an earthquake?

	A.	Power lines arc
	B.	Gas lines to appliances break
	C.	Chemicals spill and mix
	D.	Electrical appliances are shaken into dangerous positions (e.g., a lamp falls onto a couch), which are not noticed because the power is out (and the building may be evacuated), but when power comes back on, they pose a fire hazard.
	E.	All of the above

Answer 1

And:- E . All of the above.

After earthquake the power lines can contact each other or the ground and cause a short circuit and resulting arc. Natural gas piping and appliances can be damaged during earthquake. Chemicals spill and mix with each other. Also the electrical appliances are shaken in to dangerous position (eg. A lamp falls on to a couch), which are not noticed because the power is out (and the building maybe evacuated), but when power comes back on , they pose a fire hazard. Earthquake is the shaking of the surface of the earth resulting from a sudden release of energy in the Earth's lithosphere. Due to which all of the above contribute to the ignition fires after an earthquake.