Question

A line connecting all points on the surface of the earth where the intensity of shock produced by earthquake waves is the same.
A.Isoseismal line
B.Isohyet line
C.Isobars
D.Isotherm line

Answer 1

Hint: The intensity is a number which describes the severity of an earthquake in terms of its effects on the earth's surface and on humans and their structures. The Modified Mercalli scale and the Rossi-Forel scale are commonly used to measure the intensity.

Complete answer: About 80% of the seismic energy is released by interplate earthquakes. These earthquakes can be large. Due to their unexpectedness and infrequency they can cause major damage.
a.Isoseismal is a line connecting points on the Earth's surface of similar intensity. It is a line on a map bounding points of equal intensity for a particular earthquake. Intensity of an earthquake and magnitude of an earthquake are two different things. Intensity of an earthquake based on visible consequences implies how much damage is caused by a particular earthquake. This option is correct.
b. An isohyet line is a line on a map which links points that have the same percentages of precipitation in a given period. The technique used in estimating average rainfall across a particular area is known as an isohyetal method. This option is incorrect.
c. Isobars are the lines on a weather map joining together places of equal atmospheric pressure . The numbers on it measure the atmospheric pressure in millibars. This option is incorrect.
d. Isotherms are lines on weather maps that link points of equal temperature. This option is incorrect.

Thus, The correct answer is Option A.

Note: According to the U.S. Geological Survey (USGS), the most powerful earthquake was the 9.5-magnitude Valdivia Earthquake that struck Chile in 1960. Seismographs are devices used to record the movement of the ground during an earthquake.