Understanding Earthquake Magnitude Scales

Who developed the Richter scale in the 1930s?

• Charles Richter and Beno Gutenberg

• Alfred Wegener and Harry Hess

• Isaac Newton and Albert Einstein

• Marie Curie and Louis Pasteur

What type of scale is the Richter scale?

• Linear

• Exponential

• Logarithmic

• Quadratic

What was a significant limitation of the Richter scale?

• It could only measure earthquakes in the ocean.

• It underestimated larger earthquakes.

• It overestimated smaller earthquakes.

• It was too expensive to use.

What advancement in technology helped improve the measurement of earthquakes?

• The invention of the thermometer

• The development of more sensitive seismometers

• The creation of the Richter scale

• The discovery of tectonic plates

In what year was the Moment Magnitude Scale (MMS) developed?

• 1935

• 1950

• 1979

• 1995

What does the Moment Magnitude Scale (MMS) consider that the Richter scale does not?

• The colour of the seismic waves

• The total energy released during an earthquake

• The speed of the earthquake

• The temperature of the Earth's core

How much does the energy release increase when the moment magnitude increases by one unit?

• By a factor of 10

• By a factor of 20

• By a factor of 32

• By a factor of 50

Why is the Moment Magnitude Scale preferred by seismologists today?

• It is easier to calculate.

• It provides a more comprehensive and accurate measurement of earthquakes.

• It is cheaper to use.

• It is the oldest method available.