Question

define the following vocabularies: 1. richter scale 2. mercalli scale 3. moment magnitude scale 4. seismograph bell work (thursday) define the following vocabularies: 1. amplitude 2. trough 3. crest 4. wavelength bell work (friday) 1. what is a tsunami? 2. what is a compression wave in an earthquake? 3. what is a transverse wave in an earthquake? 4. what is the triangulation method about earthquakes?

Explanation:

1. Richter scale: A logarithmic scale to measure earthquake magnitude based on amplitude of seismic waves.
2. Mercalli scale: Ranks earthquake intensity based on observed effects on people, structures, and the environment.
3. Moment magnitude scale: Measures earthquake size considering seismic moment, more accurate for large - quakes.
4. Seismograph: Instrument that records ground motion during an earthquake.
5. Amplitude: Maximum displacement of a wave from its equilibrium position.
6. Trough: The lowest point of a wave.
7. Crest: The highest point of a wave.
8. Wavelength: Distance between two consecutive crests or troughs of a wave.
9. Tsunami: A series of large ocean waves caused by underwater disturbances like earthquakes or landslides.
10. Compression Wave in an earthquake: Also called P - wave, it is a longitudinal wave that travels through the Earth's interior.
11. Transverse Wave in an earthquake: Also called S - wave, it is a shear wave that moves perpendicular to the direction of wave propagation.
12. Triangulation Method about earthquakes: Uses arrival times of seismic waves at three or more seismograph stations to locate the epicenter of an earthquake.

Answer:

1. Richter scale: A logarithmic scale for earthquake magnitude based on seismic - wave amplitude.
2. Mercalli scale: Ranks earthquake intensity by observed effects.
3. Moment magnitude scale: Measures earthquake size considering seismic moment.
4. Seismograph: Instrument recording ground motion during an earthquake.
5. Amplitude: Maximum wave displacement from equilibrium.
6. Trough: Lowest point of a wave.
7. Crest: Highest point of a wave.
8. Wavelength: Distance between consecutive wave crests or troughs.
9. Tsunami: Series of large ocean waves from underwater disturbances.
10. Compression Wave in an earthquake: Longitudinal P - wave traveling through Earth's interior.
11. Transverse Wave in an earthquake: Shear S - wave moving perpendicular to wave propagation.
12. Triangulation Method about earthquakes: Uses seismic - wave arrival times at multiple stations to locate epicenter.