1. Inside Earth Chapter 2.4 Pages 78-81
Monitoring
Faults
Inside Earth Chapter 2.4
Pages 78-81

2. Devices that Monitor Faults
Instruments used to observe changes and measure stress and deformation of the crust.
Creep Meters
Laser-Ranging Devices
Tiltmeters
Satellites

3. Creep Meters
A meter with a wire stretched across a fault to measure horizontal movement
Wire is anchored to a post
The wire on the other side of the fault has a weight attached to it
Movement can be determined by measuring how much the weight has moved. 3

4. Laser-Ranging Devices
Detects tiny fault movements with a laser
The device measures the time it takes for the beam to travel to a reflector and back
Can detect any change in distance. 4

5. Tiltmeters Containers of water measure the tilting of the ground
Acts like a carpenters level.
Geologists read the scales to see how much tilting is happening along a fault. 5

6. Satellites
Satellites bounce radio waves off the ground and the satellite records them
Can detect small changes in elevation, may result when stress deforms the ground. 6

7. Monitoring Risk in the US
Geologists cannot predict earthquakes.
Exactly what will happen remains uncertain.
Stress may build up and not release an earthquake.
Or stress may be released in another part of the fault.
Geologists know that earthquakes are likely wherever plate movements store energy in the rock along faults.
Geologists can determine the risk by where faults are active and other earthquakes have occurred. 7

8. Monitoring Risk in the US
Page 81 in textbook. 8

9. What to Work On Chapter Review on pages 83-85 Define the Key Terms
Answer as many questions as you can
Include the page you found the answer on
You may work in groups of 2
Whispering only!
If you or your group member is not on task, BOTH of you will be written up
Jacob, summer, ryan, mary, katelyn, jason, mario, ashley, nadine,

10. What to Work On
Kristen, Nick, Nic, Alyssa, Sal, Rocco, Gianna, Sam, Mikaela, Kelsie, LaMarre, Christine, Ethan, Jakiah, Cheyenne, Sierra, Mike
Chapter Review on pages 83-85
Define the Key Terms
Answer as many questions as you can
Include the page you found the answer on

11. What to Study
Know the 4 devices used to measure faults (creep meters, laser-ranging devices, tiltmeters, satellites)
Be able to explain how at least 2 of them work
Be able to define Liquefaction
Study what you should do if an earthquake were to happen (stay away from windows, go in doorways, avoid hanging objects, etc.)