Mercalli Intensity Scale

Question 1

I

Answer 1

Not felt

Question 2

II

Answer 2

Felt only by a person at rest

Question 3

III-IV

Answer 3

Felt by a person indoors only

Question 4

V-VI

Answer 4

Felt by all; some damage to plaster and chimneys

Question 5

VII

Answer 5

People run outdoors, damaged poorly, built structures suffer major damage

Question 6

VIII

Answer 6

Well-built structures slightly damaged; poorly built structures suffer major damage

Question 7

IX

Answer 7

Buildings shifted off foundations

Question 8

X

Answer 8

Some well-built structures destroyed

Question 9

XI

Answer 9

Few masonry structures remain standing; bridges destroyed

Question 10

XII

Answer 10

Damage total; waves seen on ground; objects thrown into air