Intensity and Magnitude

The scale used to measure the effect and damage brought about by an earthquake is ____.

• Mercalli scale

• Centigrade scale

• Rossi-Forel scale

• Richter scale

A recording called _____ is made by a machine called a __________.

• . seismogram, seismograph

• seismogram, Richter scale

• seismic wave, seismograph

• seismograph, seismogram

What does Richter scale in earthquake measure?

• Energy released from earthquake

• Damage resulting from an earthquake

• Amplitude of seismic waves on seismogram

• Displacement on faults

Each higher number of the Richter scale

• increases with the magnitude of an earthquake

• means ten times more ground movement

• indicates about thirty times more energy released

• means all of the above

Which of the following is use to measure the earthquake’s magnitude?

• Richter Scale

• Modified Mercalli Scale

• Centigrade Scale

• Magnitude scale