Richter Scale Practice with Logarithms

Earthquake A has a magnitude of 5.4 on the Richter scale.

Earthquake B is 10 times as powerful as Earthquake A.

What is the magnitude of Earthquake B?

• 54

• 15.4

• 5.5

• 6.4

Earthquake C has a magnitude of 4.9 on the Richter scale.

Earthquake D is 10,000 times as powerful as Earthquake C.

What is the magnitude of Earthquake D?

• 49,000

• 8.9

• 10,004.9

• 5.3

Earthquake E has a magnitude of 7.1 on the Richter scale.

Earthquake F is 0.01 times as powerful as Earthquake E.

What is the magnitude of Earthquake F?

• 0.071

• 9.1

• 5.1

• 7.09

Earthquake G has a magnitude of 3.1, and Earthquake H has a magnitude of 6.1.

Earthquake H is ___ times as powerful as Earthquake G.

Earthquake L has a magnitude of 5.9, and Earthquake M has a magnitude of 4.9.

Earthquake L is ___ times as powerful as Earthquake M.

Earthquake N has a magnitude of 1.4, and Earthquake P has a magnitude of 7.4.

Earthquake P is ___ times as powerful as Earthquake N.

Earthquake J has a magnitude of 2.9, and Earthquake K has a magnitude of 5.2.

Earthquake K is ___ times as powerful as Earthquake J.

Round your FINAL answer to 2 decimal places.

Earthquake Q has a magnitude of 6.3, and Earthquake R has a magnitude of 3.8.

Earthquake Q is ___ times as powerful as Earthquake R.

Round your FINAL answer to the nearest whole number.

Earthquake S has a magnitude of 7.5, and Earthquake T has a magnitude of 7.9.

Earthquake T is ___ times as powerful as Earthquake S.

Round your FINAL answer to the 1 decimal place.

Earthquake U has a magnitude of 2.6 on the Richter scale.

Earthquake V is 20 times as powerful as Earthquake U.

What is the magnitude of Earthquake V?

Round your final answer to 1 decimal place.