1. Epicenter Hunt “The Game”
PLAY
2006
DeMarco Productions Inc.

2. LEVEL ONE
Before we can trust YOU to find the epicenter of an Earthquake, we need to make sure you are qualified for the job.
From the choices below, select the qualification level that best suits you:
press
I am a geologist for NASA.
press
I have worked for the USGS for 34 years.
press
I am in Mrs. Pounder’s Earth Science class.

3. It is our pleasure to meet you, and have you work with us on this task.
The Background Info:
The Earthquake was estimated to be a 7 on the Richter scale.
Many people were killed, and the destruction is widespread.
We were able to capture some pictures of the devastation, and we need you to examine them for us.
The Pictures are
in this album 

4. LEVEL TWO Convergent Transform Divergent
Can you tell us which type of fault must have occurred at this location?
*(It was taken in an orchard near the area of the most severe destruction.)
LEVEL TWO
Convergent
Transform
Divergent

5. X We don't agree. Click to restart.
Can we really trust you with this job?
Click to restart.

6. LEVEL THREE
Mrs. Pounder needs to know what “that spot beneath the epicenter” is called before he can continue getting you information on this Earthquake.
Strike
Zone
sFocus

7. LEVEL FOUR
Okay, we are getting somewhere now. We have some information arriving about the Earthquake. Let’s keep going!
Dr. Al K. Seltzer would like to know how many locations you would like a report from in order to find your epicenter….
He suggests you request the lowest possible, most efficient #.
Please select the # below. 2 3 1 4

8. LEVEL FIVE TAKE IT LEAVE IT or
Some background information that Mrs. Pounder thinks will help:
TAKE IT
LEAVE IT or

9. Ok, Thanks Mrs. P I am Ready to move on.
P - Waves
Primary wave- travels phastest so it arrives at seismic stations phirst.
Push-pull wave: rock vibrates forward and backward in the same direction that the wave travels ("parallel to propagation").
Pass through solids and liquids (magma).
Ok, Thanks Mrs. P I am Ready to move on.

10. Ok, Thanks Mrs. P I am Ready to move on.
S - Waves
Secondary wave- arrives at a seismic station second.
Slow wave- not as fast as the P-wave.
Shake wave (shear wave)- vibrates side-to-side.
Solids wave- only travels through solids.
Ok, Thanks Mrs. P I am Ready to move on.

11. NEXT Get it out! This will be useful!
It’s a good thing that you just happened to have a copy of your ESRT in your backpack.
Get it out!
This will
be useful!
NEXT

12. The P-line shows how much time it takes a P-wave to travel a certain distance. So if you need to know how much time it takes the p-wave to travel 6,000km, it is about 9 minutes and 30 seconds. (about 9:30 ). The S-wave works the same way: for 6,000km it takes 17:00 .
ok!

13. The Information is Rolling In!
The P-wave and S-wave are separated by 4:05 (4 minutes, 5 seconds). You need to find a spot on the graph where the P-line and the S-line are separated by 4:05 !
HOW?
Take a scrap piece of paper, line it up along the left edge of the chart.
Put a small tick mark on your scrap paper at zero, and a small tick mark at 4:05 .
Slide the scrap paper up along the chart until it the two tick marks just touch the P and S lines. BE SURE THAT YOUR SCRAP PAPER IS PERFECTLY STRAIGHT UP AND DOWN (use the lines on the grid as a guide).
Now that you have found the right spot on the graph, drop a line straight down to the bottom of the graph to read the distance!
WRITE DOWN YOUR ANSWER SOMEWHERE SAFE!
Got it !

14. WHEN DID THE EARTHQUAKE HAPPEN?
Find The Time That The Earthquake Occurred !
When a seismograph detects an earthquake that happened at some distance, (3,200km for example) you know that the earthquake happened some time in the past and it took time for the waves to reach your station. But how long ago? All you need to do is answer the question “how long does it take a P-wave to travel 3,200km?
EXAMPLE: Find 3,200km on the bottom of the chart.
Go straight up until you reach the P-line and read the time from the left of the chart: 6:00 (6 minutes).
Now compare times: if you detected the earthquake at 3:17:00 and it took 6:00 to reach you, then the earthquake happened 6 minutes before 3:17:00, or 3:11:00
Right now it is 2:58pm
Ok, I did.
Record your time
in a safe place!
So when did it happen?

15. THE FINAL LEVEL! (Pat yourself on the back for getting this far!)
The only thing left to do is call up the other two seismic stations, and ask them for their information!
Hurry!
Click Here to Call!

16. Info from the other locations is in, we need to use something to draw perfect circles on our map.
Choose the object
we need!

17. Press the area where the Earthquake must have happened!

18. THANK YOU! You helped us find the Epicenter!
To show our appreciation for what you have done for our community, we would like to present you with an award. Please choose “continue” to go to the award ceremony. Thank you again.
Continue
For credit, you must print out the certificate and hand it to Mrs. Pounder

19. United States Geological Survey
Official Seismologist
United States Geological Survey
Is pleased to announce that
(print your name here)
Epicenter Distance from your location:______
Time at which it occurred: _____
Has successfully located the epicenter of a major earthquake, and shall have bestowed upon him/her, the official license of seismology on this date, __ /__ /2007.
George W. Bush
Jean Pounder