Approximately how much more energy is released in a magnitude 7 earthquake compared to a magnitude 5 earthquake?

I'm very confused and don't know what the answer is

I'm very confused and don't know what the answer is

1 Answer
Write your answer here...
Start with a one sentence answer
Then teach the underlying concepts
Don't copy without citing sources
preview
?

Answer

Write a one sentence answer...

Answer:

Explanation

Explain in detail...

Explanation:

I want someone to double check my answer

Describe your changes (optional) 200

10
SCooke Share
Sep 20, 2017

Answer:

The Richter Scale used for earthquake magnitude is a logarithmic scale.

Explanation:

That means each step change indicates an increase in magnitude of 10 times. From 5 to 6 is one step change, or 10 times as much. A second change to 7 would be another 10 times as much, so the energy difference is 10 * 10 = 100.

From the available answers, the "approximate" one would be c) 90.

Figure from http://www.seismo.ethz.ch/eq_swiss/Ursache_Erdbeben/index
enter image source here

Was this helpful? Let the contributor know!
1500
Impact of this question
3440 views around the world
You can reuse this answer
Creative Commons License