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9. List some early warning systems, describe how they work and evaluate their effectiveness with the amount of warning they can provide.

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9. List some early warning systems, describe how they work and evaluate their effectiveness with the amount of warning they can provide.

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Television, internet, radio calls, internet etc. When an earthquake is sensed it immediately sends out a message by what ever source is being used, and because now days nearly everyone has their TV's or phones on its easier for people to find out

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 8.Describe the importance of Early warning systems.

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 8.Describe the importance of Early warning systems.

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Early warning is a major element of disaster risk reduction. Early action can often prevent a hazard turning into a human disaster by preventing loss of life and reducing the economic and material impacts. To be effective and sustainable they must actively involve the communities at risk.

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5What is the name of a scientist who studies earthquakes?

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5What is the name of a scientist who studies earthquakes?

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Seismologist

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6.List some ways that Scientists can predict an earthquake occuring and evaluate the effectiveness of these methods.

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6.List some ways that Scientists can predict an earthquake occuring and evaluate the effectiveness of these methods.

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Scientists can predict where major earthquakes are likely to occur, however, based on the movement of the plates in the Earth and the location of fault zones. They also can make general guesses about when earthquakes might occur in a certain area, by looking at the history of earthquakes in the region and detecting where pressure is building along fault lines. For example, if a region has experienced four magnitude 7 or larger quakes during the past 200 years, scientists would calculate the probability of another magnitude 7 quake occurring in the next 50 years at 50 percent. But these predictions may not turn out to be reliable because, when strain is released along one part of a fault system, it may actually increase strain on another part

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7. For areas that are earthquake prone, engineers need to design buildings that are safe and can withstand earthquakes. What are some things that architects and engineers ensure in builds in earthquake areas.

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7. For areas that are earthquake prone, engineers need to design buildings that are safe and can withstand earthquakes. What are some things that architects and engineers ensure in builds in earthquake areas.

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Buildings are basically designed to support a vertical load in order to support the walls, roof and all the stuff inside to keep them standing. Earthquakes present a lateral, or sideways, load to the building structure that is a bit more complicated to account for.

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3. Describe which scale is more commonly used today and why ?

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3. Describe which scale is more commonly used today and why ?

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There are a number of ways to measure the magnitude of an earthquake. The first widely-used method, the Richter scale, was developed by Charles F. Richter in 1934. It used a formula based on amplitude of the largest wave recorded on a specific type of seismometer and the distance between the earthquake and the seismometer.

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4 What are the main differences between the 2 scales?

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4 What are the main differences between the 2 scales?

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the Mercalli scale measures the intensity of an earth quake the Richter scale describes measures the magnitude by measuring the seismic waves

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2. Describe how the Mercalli Scale works.

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2. Describe how the Mercalli Scale works.

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The Mercalli Scale measures the effects of an earthquake and is distinct from the moment magnitude which is a measure of the energy released.

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1. Describe how the Richter scale works.
The Richter scale is a logarithmic scale, meaning that the numbers on the scale measure factors of 10. See more pictures of natural disasters.