QQ Conclusion of yesterdays lab 1 What are
QQ: Conclusion of yesterday’s lab 1. What are the types of waves you studied? 2. How are the types of waves alike? 3. How are the types of waves different? 4. 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.
What’s First? The Question: How is energy from earthquakes spread? Research: Map of Virginia
Hypothesis: Procedure: Time movement of springs
Data: WAVE TYPE: TRIAL # TIME 1 2 3 AVERAGE WAVE TYPE: TRIAL # 1 2 3 AVERAGE TIME OBSERVATION (SKETCH AND DESCRIPTION)
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
Seismic Waves • Waves caused by movement inside the Earth Energy being transferred down the line Original Force: Where rocks broke
Rocking and Rolling!
How can we compare the strength of one earthquake to another?
Seismograph: Measures seismic waves
SEISMOGRAPH Measures earthquakes by graphing the waves of energy
Richter Scale used to measure the strength of an earthquake using seismic waves (pwaves and s-waves) 2 or less are small 8 or larger are huge
Tsunami • Series of huge waves caused by earthquakes under the ocean Tidal Wave
Splish Splash. . . I was taking a bath!
Triangulation Using the triangle of a Venn diagram
Wal-mart Erwin 14 miles Epicenter! Wal-mart Fayetteville 30 miles Wal-mart Clinton 19 miles
You are the seismologist. Finding the Epicenter
- Slides: 27
