Chapter 15 Study Guide

The wave that causes particles in the ground to move

• Primary waves

• Secondary waves

• Surface waves

Tags

NGSS.MS-ESS3-2

Which scale measures earthquake intensity?

• Modified Mercalli Scale

• Richter Scale

• Saffir-Sampson Scale

The main chemical compound in all magmas is __________

When magma erupts explosively, ________ _____ is sent into the atmosphere

Fast moving avalanches of hot gas, ash, and rock produced by explosive volcanoes:

• Mudflow

• Pyroclastic Flow

• Lava Flow

Tags

NGSS.MS-ESS3-2

Magma that has a low silica content has a _____ viscosity

A volcano with gently sloping sides is a _______ volcano

Scientists that study earthquakes are called:

• Seismometer

• Seismogram

• Seismologist

How many volcanoes erupt each year?

Lavas that are low in silica erupt quietly

• True

• False