A Richter scale measures the movement of the earths surface which happens during an earthquake.
Richter scale measures the magnitude of earthquakes.
logarithmic scale
the Richter scale
it measured 8.9 on the Richter scale
The intensity of earthquakes is measured on the Richter Scale.
they are measured by a Richter scale
They are measured on the Richter scale.
The Haiti earthquake measured around 7.0 on the Richter Scale.
Richter scale is used to measure earthquakes magnitude Shake intensity is measured on the Mercalli scale
Earthquakes are measured using a Richter scale and the results are reflected in Richter units in orded coincide with the Richter scale.
They are measured on the Richter Scale, if you are talking about the magnitude
it isn't it is on the Richter scale