QQ: Conclusion of yesterday’s lab What are the types of waves you studied? How are the types of waves alike? 3. How are the types of waves different? What difference do you predict this makes studying earthquakes?
Do the red dots move? What is moving?
Today’s Objective: I can describe how energy is transferred through the earth.
The Question: How is energy from earthquakes spread? What’s First? The Question: How is energy from earthquakes spread? Hyperlink map to video Research: Map of Virginia
Hypothesis: Procedure: Time movement of springs
Data: WAVE TYPE: TRIAL # TIME OBSERVATION (SKETCH AND DESCRIPTION) 1 2 3 AVERAGE WAVE TYPE
ANALYIZE THE DATA: DESCRIBE WHAT YOU NOTICE ABOUT THE 3 TYPES OF WAVES. ARE THERE ANY PATTERNS IN YOUR DATA?
P-Waves (Primary) Push and pull underground rocks Causes structures on the surface to move back and forth Least powerful Fast
S-Waves (Secondary) Horizontal: Rocks move from side to side Damaging effects Slower Only through rock
L-Waves (Love) Vertical and sideways: Rocks move up and down Occurs on surface Fastest of all Most destructive
Waves caused by movement inside the Earth Seismic Waves Waves caused by movement inside the Earth Original Force: Where rocks broke Energy being transferred down the line
Rocking and Rolling!
How can we compare the strength of one earthquake to another?
Measures seismic waves Seismograph: Measures seismic waves
Measures earthquakes by graphing the waves of energy SEISMOGRAPH Measures earthquakes by graphing the waves of energy
Richter Scale Scale used to measure the strength of an earthquake using seismic waves (p-waves and s-waves) 2 or less are small 8 or larger are huge
Series of huge waves caused by earthquakes under the ocean Tsunami Series of huge waves caused by earthquakes under the ocean Tidal Wave
Splish Splash...I was taking a bath!
Using the triangle of a Venn diagram Triangulation Using the triangle of a Venn diagram
Epicenter! Wal-mart Erwin 14 miles Wal-mart Fayetteville 30 miles Wal-mart Clinton 19 miles
You are the seismologist. Finding the Epicenter