TOPIC 3

Question 1

It is the internal part of the seismograph, which may be a pendulum, or a mass
mounted on a spring.

Answer 1

SEISMOGRAM

Question 2

It is the measure of the size or energy release of an earthquake at its source

Answer 2

MAGNITUDE

Question 3

It is the strength of an earthquake perceived and felt by people in a certain locality

Answer 3

INTENSITY

Question 4

This magnitude scale was developed in 1935 by Charles
Richter. This was the first magnitude scale and is one of the most well-known.

Answer 4

RICHTER / LOCAL MAGNITUDE SCALE

Question 5

These are scientific instruments designed to detect and record ground vibrations
caused by seismic waves.

Answer 5

SEISMOGRAPH

Question 5

It was the first known earthquake detector invented by Chinese
astronomer and mathematician Chang Heng in 132 A.D.

Answer 5

EARTHQUAKE WEATHERCOCK

Question 6

It is also known as the Japan Meteorological Agency (JMA) Seismic Intensity Scale, is
a measurement system used to assess the intensity of earthquakes, specifically in Japan.

Answer 6

SHINDO SCALE

Question 7

It was one of the first seismic scales to represent earthquake intensities.
Developed by Michele Stefano Conte de Rossi of Italy and François-Alphonse Forel of Switzerland during
the late 19th century (1880s).

Answer 7

ROSSI-FOREL INTENSITY SCALE

Question 8

This scale measures the amplitude of P-waves, or primary waves,
which are the fastest seismic waves that travel through the Earth’s interior.

Answer 8

BODY-WAVE MAGNITUDE SCALE

Question 9

This scale measures the amplitude of long-period surface
waves, particularly Rayleigh waves, which travel along the Earth’s crust.

Answer 9

SURFACE-WAVE MAGNITUDE SCALE