1. Earthquakes and Volcanoes
By: Traci Klein

2. Earthquakes
Earthquake is the shaking and trembling that results from the sudden movement of part of the Earth’s crust.

3. Volcanoes
A Volcano is a place in the Earth’s surface through which molten rock and other materials reach the surface.

4. Tsunamis
A Tsunamis is produce by a earthquake. It is a giant sea wave.
It can travel at speeds of 700 to 800 kilometers per hour.

5. Primary Waves Primary Waves are produced by Earthquakes.
P-Waves are a type of elastic wave, also called a seismic waves.
P-waves are recorded by seismometers

6. Secondary Waves
The S-Wave, secondary wave, or shear wave is one of the main types of elastic body waves.
The S-wave moves as a shear or transverse wave.

7. Surface Waves
In physics, surface wave can refer to a mechanical wave that propagates along the interface between differing media, usually two fluids with different densities.

8. Cinder Cones
A Cinder Cone or Scoria Cone is a steep conical hill if volcanic fragments that accumulate around and downwind from a volcanic vent.

9. Shield Volcanoes
A Shield Volcano is a large volcano with shallow sloping sides.
The name derives from a translation of “Skjaldbeiour” an Icelandic shield volcano whose name means “broad Shield,” from its resemblance to a warrior’s shield.

10. Composite Volcanoes
Composite Volcanoes also called strato volcanoes are formed by alternating layers of lava and rock fragments. This is the reason they are and composite.