Earthquake and Geological Concepts Flashcard

Front

About 80% of the world's earthquakes occur in the ___?

Back

circum-Pacific belt

Front

The earthquake zone stretching from southern Europe to Indonesia is the ___?

Back

Alpide belt

Front

Most of the earth's surface is covered by deposits of sand and mineral fragments, usually laid down by water. These deposits are called?

Back

sediments

Front

The inner core of the earth is thought to be __?

Back

solid

Front

The scale that is considered the most reliable method for measuring the energy released by an earthquake is the ___?___ scale.

Back

moment magnitude

Front

The scale used to measure the damage an earthquake does is the __?___ scale.

Back

modified Mercalli (MM)

Front

A particle or block of solid volcanic ejecta is a(n) __?

Back

pyroclast

Front

The middle of the earth's three main layers is the?

Back

mantle

Front

The earth's outer layer made of solid rock is the __?__.

Back

crust

Front

The central portion of the earth is the ?

Back

core