An earthquake releases energy equal to 5×10^14,J. Convert this energy to megatons of TNT (1 megaton =4.184×10^15,J). Provide the answer in megatons to two decimal places.

An earthquake releases energy equal to $5 \times 1 0^{14}, J$ . Convert this energy to megatons of TNT (1 megaton $= 4.184 \times 1 0^{15}, J$ ). Provide the answer in megatons to two decimal places.

hard 5 marks Class 5 · EVS · When the Earth Shook

Answer

0.12

megatons

The correct answer is $0.12$ megatons — State the final converted value.

Write the conversion formula: $Megatons = \frac{Joules}{4.184 \times 1 0 ^{15} , J/megaton}$ .
Insert the given energy $5 \times 1 0^{14}, J$ .
Compute the division: $\frac{5 \times 1 0 ^{14}}{4.184 \times 1 0 ^{15}} \approx 0.1195$ megatons.
Round to two decimal places: $0.12$ megatons.
State the final converted value.

Common mistake: Using wrong conversion factor or mis‑placing decimal

Concept tested: Energy conversion from joules to megatons