Set 6C & 6D (Earth Science)

1.  Earthquake waves are divided into TWO main categories:

Groups:

(a) Body waves

,

(b) surface waves

• 
• Love waves

• s waves

• p waves

• 
• 
• Rayleigh waves

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the center of earthquake activity

(a)  

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 the spot on the earth’s surface above the focus.

• focus

• epicenter

• seismic waves

• fault

• 

Label the diagram

a

b

c

d

epicenter

fault (line)

focus

seismic waves

love waves

1.  The strength of earthquakes are reported using the ___ . 

• Mercalli Scale

• 1. Richter Scale

• Seismic Scale

• 

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1. The ​ (a)   Scale reports the ​ (b)   of earthquakes (each number is ​ (c)   x stronger).

• Richter
• magnitude
• 31
• 10
• Mercalli

An earthquake’s intensity is the measure of how much damage results from the earthquake– this is measured in the __ .

• Richter Scale

• Mercalli Scale

• Seismic Scale

• 

The main categories of hazards related to an earthquake include: 

• building collapse
• landslides
• tsunamis

• fire

• gyser

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Earthquakes ​ (a)   accurately be predicted right now. If there has been a record of earthquakes along a ​ (b)   in many areas except one (seismic gap), geologist predict that this is a likely area for a ​ (c)   earthquake.

• cannot
• can
• fault
• future
• volcano

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1. Other warning signs of an earthquake include:

• 1. Increased seismic activity

• 1. Change in the water table level

• Unusual animal behavior

• Bad cell phone coverage

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