Question

Match the magnitudes of earthquake with their correct scientific notation (round off to 2 decimal places).

• A. $6\times {10}^{-2}$
• B. $7\times {10}^{-2}$
  
• C. $5\times {10}^{-2}$
  

Answer 1

Magnitude of earthquake A = 0.0634

Round off to two decimal places, we get, 0.06.

$\text{This is equivalent to}6\times {10}^{-2}$

Magnitude of earthquake B = 0.0454

Round off to two decimal places, we get 0.05.

$\text{This is equivalent to}5\times {10}^{-2}$

Magnitude of earthquake C = 0.0712

Round off to two decimal places, we get 0.07.

$\text{This is equivalent to}7\times {10}^{-2}$