1. Title: 8 Mass Movements Wind and Glaciers, 8.1 Mass Movements
Table of Contents
Title: 8 Mass Movements Wind and Glaciers, 8.1 Mass Movements
Page #: 66
Date: 1/30/2013

2. Objective
Students will be able to analyze the relationship between gravity and mass movements.

3. Word of the Day
Gravity: The force every object exerts on every other object due to their masses.

4. Mass Movements
Mass movements alter Earth over time due to gravity moving sediments and rocks downslope.
Rockfall
Scale: That’s a person

5. Mass Movements
Mass Movements: The downslope movement of soil and weathered rock resulting from the force of gravity.
All mass movements occur on slopes.
Almost all of Earth’s surface undergoes mass movements.
Mass movements can be very small or very large.

6. Landslide in El Salvador

7. Mass Movements 4 Factors that Influence Mass Movements:
The weight of the material
The material’s resistance to flowing
Depends on how cohesive material is, the amount of friction and whether material is anchored to bedrock.

8. Mass Movements 4 Factors that Influence Mass Movements:
Trigger that loosens material
Examples: Earthquake; Volcanoe
Water adds weight to material and acts as lubricant to reduce friction.