Which seismic wave arrives at the epicenter first?
P-Waves
100
What is a long crack in the earth that could be caused by an earthquake?
A fissure
100
What are the two types of energy that relate to earthquakes?
Potential and kinetic
100
How many seismographs do you need, at a minimum, to locate the epicenter of an earthquake?
3
100
The area with the highest percentage of earthquakes in the world is the what?
The Ring of Fire
200
Which seismic waves causes the most destruction?
L-Waves
200
What is a scarp?
A cliff created by movement along a fault
200
A cat flying through the air is an example of what type of energy?
Kinetic energy
200
You need to find the difference in arrival times between what 2 waves to help find the location of the epicenter?
P & S
200
What are two other areas of significant seismic activity in the world?
1. Mid-Atlantic Ridge
2. Mediterranean Asiatic Belt
300
Which seismic wave has a medium amplitude?
S-waves
300
What piece of earthquake evidence destroyed the train in the video that we watched in class?
A landslide
300
Where is the potential energy as it relates to earthquakes?
At the focus as the pressure is increasing between two tectonic plates
300
Which is closer to the epicenter, a P-S difference of 45 seconds or a P-S difference of 120 seconds? Why?
45 seconds because those waves took a shorter trip from the epicenter of the earthquake to the seismograph station
300
What do you do in Mr. White's room if there happens to be an earthquake?
Get under the tables or get in the door frame
400
Where do seismic waves go from potential energy to kinetic energy?
At the focus
400
What are the three factors that will indicated how much damage is done to a building during an earthquake?
1. How close the structure is to the epicenter of the earthquake
2. The type of ground that the building is built on
3. The type of material used to construct the building
400
Give an example of potential and kinetic energy beyond our discussion of earthquakes?
All reasonable answers accepted
400
After an earthquake has hit the epicenter, what are the 2 scales used to measure the strength of the epicenter?
Richter and Mercalli
Be sure to know how they are different from each other
400
What are 2 ways that a building could be constructed to withstand an earthquake?
All reasonable answers from your research are acceptable
500
Where is the strongest shaking of an earthquake felt on the surface?
At the epicenter
500
Who wins during a landslide, the soil or the seismic waves?
The seismic waves
500
Which has more kinetic energy, a 2.5 earthquake or a 6.5 earthquake? Why?
The 6.5 because in order to have more kinetic energy it had to have more potential energy building up at the focus over time.
500
What are the steps for locating the epicenter of an earthquake?
1. Find the difference in arrival times between the P & S waves
2. Use those times to find the distance to the epicenter
3. Use the distance to create the radius of a circle
4. At least three seismic stations/circles are needed to locate the epicenter
500
What is the elastic limit?
The point of stress that tectonic plates reach right before breaking and releasing the potential energy as kinetic energy and making an actual earthquake