The Richter Scale is based on measurements of the ____ of a seismic wave.
A. Speed
B. Frequency
C. Intensity***
D. Amplitude
C. Intensity
Did you say that was your guess by adding *** on it?
To determine which variable the Richter Scale is based on, we can start by understanding what the Richter Scale measures. The Richter Scale is a logarithmic scale used to quantify the amount of energy released during an earthquake, known as its magnitude.
Now, let's go through each option:
A. Speed: The speed of a seismic wave refers to how fast it travels. While the speed of seismic waves is important in studying earthquakes, it is not the basis for the Richter Scale.
B. Frequency: The frequency of a seismic wave refers to the number of waves that pass a certain point in a given time. While frequency is related to the characteristics of seismic waves, it is not the primary factor used to determine earthquake magnitude on the Richter Scale.
C. Intensity: Intensity is a measure of the effects and damage caused by an earthquake at various locations. It takes into account factors such as shaking and destruction of structures. While intensity is related to the impact of an earthquake, it is not the sole basis for the Richter Scale.
D. Amplitude: Amplitude is the maximum displacement of a wave from its resting position. In the context of seismic waves, it refers to the maximum ground motion caused by an earthquake. The Richter Scale is indeed based on the amplitude of seismic waves. It measures the amplitude of seismic waves recorded by seismographs to calculate the magnitude of an earthquake.
Therefore, the correct answer is D. Amplitude.