KHAY+2.2

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Vocabulary

 * Epicenter**:the place that is directly on top of
 * Focus**:the point beneath Earth's surface where rocks that are under stress break and trigger or make an earthquake the focus
 * Seismic Waves**:waves that carry the vibrations or energy of an earthquake
 * P Waves**:a wave of an earthquake that compress and expand like an accordion
 * S waves**:a wave of an earthquake that moves up and down, side to side, like a squiggly line
 * Seismograph**:an instrument used to record the movement of seismic waves when they move through the Earth
 * Magnitude**:a measurement of how much strength based on seismic waves
 * Meracalli Scale**:a scale developed in the early 20th century that rates earthquake based on their intensity/strength
 * R****ichter Scale**:a scale developed in the 1930s that rates the size of seismic waves

Outline

 * Measuring Earthquakes
 * Focus
 * Epicenter
 * Mercalli Scale
 * Richter Scale
 * Moment Magnitude Scale
 * Detecting Seismic waves
 * Seismic Waves
 * Seismograph

Diagrams


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