Quick Question: What are the 3 types of stress? What kind of fault is caused by each of these types of stress? When a fault occurs, the surface of earth can increase, decrease, or stay the same. Describe how each type of fault changes the earth’s surface.

Stress Fault Type Change in surface Area Tension Normal Increases Compression Reverse Decreases Shearing Strike-slip No change

Today’s Objective: I understand how rock moves through the rock cycle.

Plate Tectonics: We Didn't Start the Fire Either!

Let's Rock The Rock Cycle

Weathering: Gradual wearing away of earth by sources acting upon it.

Chemical Weathering: The affect of chemicals in air and atmosphere

Mechanical Weathering Physical changes only: The rock type doesn’t change

Frost Wedging

Root Wedging Plant roots pushing soil away as they grow

Rapid changes in weather Temperature Rapid changes in weather

Pressure under earth pushing up Unloading Pressure under earth pushing up

The moving away of surface sediment (soil, small rocks, particles) Erosion: The moving away of surface sediment (soil, small rocks, particles)

Weathering and Erosion are natural processes occurring since the beginning of time.

The actions of humans can affect weathering & erosion.

Water Farming Water Wind Rain Deforestation Wind Construction

All soil started as rock and decomposing matter. Sedimentary Rock created by “gluing” together small pieces of rock, sand, & organic matter All soil started as rock and decomposing matter.

Sedimentary Rock: Sediment (small particles) Transportation (moved) Deposition (put down) Compaction (Pushed together) Cementation (glued together by tiny dust-like particles)

Metamorphic Rock Created by extreme heat & pressure

Includes organic things also

Rapidly cooled from molten rock Igneous Rock

Intrusive: Made inside the Earth Extrusive: Made outside the Earth

Rock Cycle