Send help fast!!!
Virtual Lab
Background
There’s just been a serious earthquake! You are the seismologist on a team
of professionals that needs to determine where to send rescue workers,
ambulances, helicopters, and emergency supplies.
I.
Epicenter & Magnitude
4. Follow the directions on screen to find the epicenter of the
earthquake.
III. Summarize the steps you had to follow to find out where the
epicenter was.
What do you need to figure out in order to know where to send
these resources?
To Begin
1. Enable pop-ups on your browser.
2. Go to the Virtual Earthquake lab from CSU Los Angeles. (See the link
on my web page.)
Lag Time
3. Under Main Activities, click on “Travel Time.” Follow the directions
on the screen to begin.
a. E represents the epicenter of the quake. Place the
seismograph stations (red numbers) in order from 1-5 from
closest to farthest from the epicenter.
b. Trigger the quake.
c. Collect the distance and lag time data.
II. What is the relationship between the distance from the epicenter
and the S-P lag time?
IV. Where should you send the disaster relief supplies and rescue
personnel? Why?
Vocabulary
Word Bank:
epicenter focus
fault
earthquake
lag time
Vocabulary
seismograph
1. __________________ A break or crack in the ground that causes
earthquakes when the rock moves
2. __________________The difference between the time when the fast P-
Word Bank:
epicenter focus
fault
earthquake
lag time
seismograph
1. __________________ A break or crack in the ground that causes
earthquakes when the rock moves
2. __________________The difference between the time when the fast P-
waves of an earthquake arrive and the time when the slower S-waves
waves of an earthquake arrive and the time when the slower S-waves
arrive at a seismograph station
arrive at a seismograph station
3. __________________ The place underground where all the earthquake
waves start
4. __________________ The place on the surface of the ground that is
above where the earthquake begins
5. __________________ Shaking of the ground caused by sudden
movement of rocks along a fault
6. __________________ A machine used to measure the waves caused by
earthquakes
3. __________________ The place underground where all the earthquake
waves start
4. __________________ The place on the surface of the ground that is
above where the earthquake begins
5. __________________ Shaking of the ground caused by sudden
movement of rocks along a fault
6. __________________ A machine used to measure the waves caused by
earthquakes