1. 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

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

3. Investigating Paleo magnetism
& the Ocean Floor

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

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

6. 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

7. Do you notice a pattern? What does it tell you?
Focus Depth Key: km
km km
What does it tell you?

8. What implications
does this have
for civilization?

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

10. 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

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

12. 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

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

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

15. Hypothesis:
Procedure: Time movement of springs

16. Data: WAVE TYPE: TRIAL # TIME OBSERVATION (SKETCH AND DESCRIPTION) 1 23
AVERAGE
WAVE TYPE

17. 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.

18. 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.

19. 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.

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

21. 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?

22. 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

23. Measures seismic waves
Seismograph:
Measures seismic waves

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

26. P-Waves (Primary)
Push and pull underground rocks
Causes structures on the surface to move back and forth
Least powerful
Fast

27. S-Waves (Secondary)
Horizontal:
Rocks move from side to side
Damaging effects
Slower
Only through rock

28. L-Waves (Love) Vertical and sideways: Rocks move up and down
Occurs on surface
Fastest of all
Most destructive

29. Rocking and Rolling!

30. Splish Splash...I was taking a bath!

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

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