Radiated seismic energy from an earthquake is estimated by log E= 4.6 + 1.7M, where E is the energy in Joules (J) and M is surface wave magnitude. (a) How many times more energy does an 8.4-magnitude earthquake have than a 5.3-magnitude earthquake? Round to the nearest thousand. (b) How many times more energy does a 5-magnitude earthquake have than a 4-magnitude earthquake? Round to the nearest whole number. Part 1 of 2 An 8.4-magnitude earthquake has approximately times more energy than a 5.3- X magnitude earthquake. Part 2 of 2 A 5-magnitude earthquake has approximately times more energy than a 4-magnitude earthquake