Forces That Shape The Earth

1
Forces That Shape The Earth

• Intro

2
Introduction

• The earth is shaped by both internal and external
  processes
• Internally, tectonic processes form the
  lithosphere
• Externally gradational processes also shape the
  lithosphere
• These include rivers, winds, glaciers, and waves

3
Rivers

• Rivers cut deep valleys and create large deltas

4
Winds

• Winds carves beautiful rock formations and carry
  sands

5
Glaciers

• Glaciers flow over continents while slowly
  carving out the land and dropping large boulders

6
Waves

• Waves and currents cut into coastlines and polish
  sandy beaches.

7
The Other Gradational Force

• Humans are a gradational force
• This picture is an example of the effects of over
  forestation