Download
1 / 12
120 likes | 123 Views
Warm Up Question. Which two seismic waves move out from the focus of an earthquake?. Important Information. If you have your signed field trip flyer, put it in the middle of the table Your science test over earthquakes is TUESDAY !!!. Monitoring Faults. Devices that monitor faults.
E N D
Warm Up Question Which two seismic waves move out from the focus of an earthquake? Important Information • If you have your signed field trip flyer, put it in the middle of the table • Your science test over earthquakes is TUESDAY!!!
Devices that monitor faults • Creep Meter • Laser Ranging Device • Tilt Meter • Satellite Monitors
Creep Meter • Wire stretches across a fault to measure horizontal movement. A weight attached to a wire moves if the fault moves. Used on STRIKE SLIP faults.
Laser Ranging Device • Uses a laser to detect fault movements. Used on STRIKE SLIP faults.
Tilt Meter • Measures the tilt of the ground. If land rises or falls, water rushes to one side of the meter. Used on NORMAL and REVERSE faults.
Satellite Monitors • Measures rising or falling of the Earth by using radar signals similar to sonar. Used on NORMAL and REVERSE faults.
What’s OUR risk?? • So far, we CANNOT predict when earthquakes will occur. • Higher risks are near active plate boundaries • Serious earthquakes are rare east of the Rocky Mountains • Atlanta is under a “moderate” risk for earthquakes
Tsunamis • Waves that form from earthquakes that occur underwater. They can be as small as 1 meter tall or as tall as a 6 story building!
