1. Constructive & Destructive Forces Shaping the Earth's Landscape

2. Constructive & Destructive Forces
Constructive Force
*Forces that CREATE features on the Earth's surface
Destructive Force
*Force that CHANGES Earth's surface

3. Constructive Forces Essential Questions
What are surface features?
What are examples of constructive forces?
How can a surface feature be changed by a constructive force?
What are surfaces features caused by constructive forces?

4. Constructive Force Deposition –
a process of dumping sediment, dirt, rocks, or particles in on place.

5. Constructive Force Essential Questions
What are surface features?
Surface features are landforms and bodies of water that cover the Earth’s surface such as:
Mountains, valleys, canyons, gorges, beaches, sand dunes, barrier Islands, flood-plains, moraines, volcanoes, oceans, lakes, and rivers

6. Constructive Force Essential Questions
What are examples of constructive forces?
Deposition
Volcanic Activity
Earthquake Activity
Faulting
Folding

7. Constructive Force Essential Questions
How can a surface feature be changed by a constructive force?
By natural forces such as wind, water, ice, through the process of deposition.
The movement of the Earth’s crust
Plate Tectonics

8. Constructive Force Essential Questions
What are surface features formed from constructive forces?
Delta
Floodplains
Barrier island
Sand dune
Moraine
Islands
Mountain Ranges
Cliffs

9. Destructive Forces Essential Questions
What are examples of destructive forces?
How are surface features changed by destructive forces?
What are examples of surface features caused by destructive forces?

10. Destructive Force Essential Questions
What are examples of destructive forces?
Weathering
Mechanical / Physical
Chemical
Erosion
Volcanic Activity
Earthquake Acuity

11. Destructive Force Essential Questions
How are surface features changed by destructive forces?
Freezing and thawing of the earth’s crust
Freezing water in cracks of rock
Oxidation / rusting
Carbonic acid / acid rain
Impact of organisms
Water / rivers and oceans
Ice / glaciers
Wind
Gravity
Movement of earth’s plates / plate tectonics

12. Destructive Force Essential Questions
What are examples of surface features caused by destructive forces?
Caverns / Carbonic Acid
V-shaped valleys / River water
Canyon / gorges / River water
Sea arches / Ocean Waves
Sea stacks / Ocean Waves
Buttes / Wind
Desert pavements / Wind
Reshaped mountains / Volcanoes
Trenches / Earthquakes