What happens to the Earth’s magnetic field over time? Quick Question: What happens to the Earth’s magnetic field over time? How did scientists discover this? Where would you find the youngest crust? Why is it there? Hyperlink to flip video

Plate Tectonics: We Didn't Start the Fire Either!

Investigating Paleo magnetism & the Ocean Floor

Today’s Objective: I understand how energy travels through the Earth

2. Safety Concerns. Create a circle concept map about Earthquakes.

Where do most people live? QQ: Key: City Plate Earthquake Volcano Is there a relationship between plate boundaries and volcanoes & earthquakes? Why do you think this is? Where do most people live? What implications does this have for civilization? How does this affect the role of scientists? 5 min to take attendance

Do you notice a pattern? What does it tell you? Focus Depth Key: 0-70 km 70-300 km 300-700 km What does it tell you?

What implications does this have for civilization?

How does this affect the role of scientists? 5 min discussion

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

Can animals predict earthquakes? Hyperlink text box to video of animals at zoo Can animals predict earthquakes?

Earthquakes: sudden release of energy from the Earth causing shaking Stress on rock becomes stronger than the rock’s strength Rock break and releases energy Energy travels in waves

Largest movement of earthquake felt here: Epicenter: Point on surface directly above focus Focus: The point in the lithosphere where the rock breaks

Where do epicenters occur? Fracture  Fault Rock is weaker than pressure and stress upon it.

Hypothesis: Procedure: Time movement of springs

Data: WAVE TYPE: TRIAL # TIME OBSERVATION (SKETCH AND DESCRIPTION) 1 2 3 AVERAGE WAVE TYPE

P – Waves: Push and Pull Primary Waves Practice pushing and pulling the slinky toward you a bit and then pushing it away. Complete observation in data chart. 3 trials timing the wave as it does one complete trip back and forth. Find the average of your data.

S – Waves: Side to Side Secondary Waves Flat on table S – Waves: Side to Side Secondary Waves Practice moving the slinky side to side parallel to the table. Complete observation in data chart. 3 trials timing the wave as it does one complete trip back and forth. Find the average of your data.

L – Waves: Up and Dow Love Waves Practice moving the slinky up and down perpendicular to the table. Complete observation in data chart. 3 trials timing the wave as it does one complete trip back and forth. Find the average of your data.

ANALYIZE THE DATA: DESCRIBE WHAT YOU NOTICE ABOUT THE 3 TYPES OF WAVES. ARE THERE ANY PATTERNS IN YOUR DATA?

Conclusion: How are the types of waves alike? How are the types of waves different? What difference do you predict this makes on studying earthquakes?

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

Measures seismic waves Seismograph: Measures seismic waves

Measures earthquakes by graphing the waves of energy SEISMOGRAPH Measures earthquakes by graphing the waves of energy

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

Rocking and Rolling!

Splish Splash...I was taking a bath!

Series of huge waves caused by earthquakes under the ocean Tsunami Series of huge waves caused by earthquakes under the ocean Tidal Wave

- Things you learned today - Questions you still have Exit Ticket - Things you learned today - Questions you still have 1 - Connection outside of this room