1. What is Richter-scale?
2. Write the magnitude of earthquake on Richter-scale, that is disastrous.
3. What is a seismograph?
4. Write two precautions to be applied while constructing a building in seismic zone.
5. Write two steps to be taken if you are in a building and caught in an earthquake.
6. Write precautions used when you are outdoors in an earthquake.
Answers
1) The Richter scale – also called the Richter magnitude scale or Richter's magnitude scale – is a measure of the strength of earthquakes, developed by Charles F. Richter and presented in his landmark 1935 paper, where he called it the "magnitude scale".
2) The Richter Magnitude Scale. ... The magnitude of an earthquake is determined from the logarithm of the amplitude of waves recorded by seismographs. Adjustments are included in the magnitude formula to compensate for the variation in the distance between the various seismographs and the epicenter of the earthquakes.
3) A seismometer is an instrument that responds to ground motions, such as caused by earthquakes, volcanic eruptions, and explosions. Seismometers are usually combined with a timing device and a recording device to form a seismograph.
4) Conduct a Home Inspection.
Keep the Foundation Moisture Constant.
Brace the Cripple walls with Plywood.
Avoid Unreinforced Masonry Walls.
Use Simpler reinforcement techniques.
Use Flexible-kind of Utilities.
Avoid Furniture, Fixtures and Decorations Near Bed.
5) If you are INDOORS -- STAY THERE! Get under a desk or table and hang on to it (Drop, Cover, and Hold on!) or move into a hallway or against an inside wall. STAY CLEAR of windows, fireplaces, and heavy furniture or appliances. GET OUT of the kitchen, which is a dangerous place (things can fall on you).
6) If you are outside, stay outside.
Move away from buildings, utility wires, sinkholes, and fuel and gas lines. ... Go to an open area away from trees, telephone poles, and buildings. Once in the open, get down low and stay there until the shaking stops.
Answer:
1). A logarithmic scale used to rate the strength or total energy of earthquakes. The scale has no upper limit but usually ranges from 1 to 9. Because it is logarithmic, an earthquake rated as 5 is ten times as powerful as one rated as 4.
2). The magnitude of an earthquake is determined from the logarithm of the amplitude of waves recorded by seismographs. Adjustments are included in the magnitude formula to compensate for the variation in the distance between the various seismographs and the epicenter of the earthquakes.
3). Seismograph, instrument that makes a record of seismic waves caused by an earthquake, explosion, or other Earth-shaking phenomenon.
6). Move away from buildings, utility wires, sinkholes, and fuel and gas lines. ... Go to an open area away from trees, telephone poles, and buildings. Once in the open, get down low and stay there until the shaking stops.