Rapid Changes

Landslides

Volcanos

Flash Flood

Earthquakes

Plant and tree roots help hold rock and dirt in place

Large amounts of rocks, mud, or other material slide down a steep slope

Erosion & Gravity can cause this

Rockfalls, Mudslides, and Avalanches are similar to landslides

Magma is melted rock under the Earth's crust

If magma breaks through the Earth, then it is called lava

Lava cools and creates a layer of rock which over time create the mountain

Magma travels up the vent & erupts out of the crater

Earth's crust is made of many big pieces that fit together called tectonic plates

Faults are where the plates fit together

Faults are are different sizes

The San Andreas fault runs most of the length of California

Plates shift and create pressure, which causes the ground to move