Answer:
10,000 times stronger
Step-by-step explanation:
An earthquake that measures 8 on the Richter scale would be 10,000 times stronger than an earthquake that measures 4 on the same scale. The Richter scale is a logarithmic scale, which means that each increment on the scale represents a tenfold increase in the amplitude of the earthquake's waves. So, an earthquake that measures 8 on the Richter scale would have waves that are 10,000 times more powerful than those of an earthquake that measures 4 on the scale.