1. Seismic Waves and Earth’s Interior
Eric Angat
Environmental Science

2. How can you survive from pancaking?
How can you survive from pancaking?

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5. Underwater earthquakes can cause tsunami!

6. http://www. sms-tsunami-warning. com/pages/earthquake-effects#

7. Liquefaction can cause buildings to collapse.

8. Transform Boundary Fault line
Epicenter. Earthquake felt on the surface
Seismic waves
Fault line
FOCUS- Origin of the earthquake, happens underground.

9. are produced by Earthquakes
Seismic Waves
are produced by Earthquakes
Body Waves
Surface Waves
Slowest
Travels only on Earth’s surface
S-Wave
Fast
Can travel through Earth, but not through the core.
P-Wave
Fastest
Can travel through Earth
What are the two types of seismic waves?
What are the two types of body waves?

10. are produced by Earthquakes
Seismic Waves
are produced by Earthquakes
Body Waves
Surface Waves
Slowest
Travels only on Earth’s surface
S-Wave
Fast
Can travel through Earth, but not through the core.
P-Wave
Fastest
Can travel through Earth
3. What produces seismic waves?
4. Which seismic wave can travel through earth?

11. are produced by Earthquakes
Seismic Waves
are produced by Earthquakes
Body Waves
Surface Waves
Slowest
Travels only on Earth’s surface
S-Wave
Fast
Can travel through Earth, but not through the core.
P-Wave
Fastest
Can travel through Earth
5. Which seismic wave can travel only up to the mantle, not the core?

12. are produced by Earthquakes
Seismic Waves
are produced by Earthquakes
Body Waves
Surface Waves
Slowest
Travels only on Earth’s surface
S-Wave
Fast
Can travel through Earth, but not through the core.
P-Wave
Fastest
Can travel through Earth
6. Which seismic wave only travel on the earth surface?

13. are produced by Earthquakes
Seismic Waves
are produced by Earthquakes
Body Waves
Surface Waves
S-Wave
P-Wave
Rayleigh waves
Love waves
7. What are the two types of surface waves?

14. Refraction is the bending of light. Pencil looks distorted.
Pencil looks nearer to the surface.
Pencil looks distorted.

15. 8. Which seismic wave stay on Earth’s Surface?
Surface waves
are seismic waves that stays on the surface.
8. Which seismic wave stay on Earth’s Surface?

16. 9. Which seismic wave refracts and cannot penetrate the outer core?
S waves
cannot penetrate the liquid outercore.
P-wave
9. Which seismic wave refracts and cannot penetrate the outer core?

17. 10. Which seismic wave can penetrate the core but refracts?
P waves also refracts but is able to penetrate the core.
P-wave
10. Which seismic wave can penetrate the core but refracts?

18. 11. In what directions do the P, S, and Surface waves move?
sideways
Right angle
rolling

20. P waves - compress and expand the ground like a accordion
S waves - vibrate from side to side as well as up and down
Surface waves - make the ground roll like ocean waves

21. 12. What Are Seismic Waves?
Seismic waves are the waves of energy caused by EARTHQUAKES or the sudden breaking of rock within the earth or an explosion.
They are the energy that travels through the earth and is recorded on seismographs

22. 13. Which is faster S or P wave?
13 minutes
4000 km
4000 km
7 minutes
There are different types of seismic waves based on the movement . The two major types are body waves ( S and P waves ) and surface waves. Body waves can travel through earth inner layers while surface waves can travel only on the surface of the land.
4000 km

23. 14. Where do seismic waves travel slowest and fastest? Explain.
Solid Crust
Partly melted asthenosphere
Lower mantle
Seismic wave travel faster in solids.
Core
S-waves do not penetrate the core
Figure 19-11, page 504
Observations of seismic wave velocities have enabled scientists to subdivide Earth’s interior into various layers.

24. 15. Which type of wave can penetrate the outer and inner core?
16. What happens to S and P waves as they travel inside earth?
Figure 10-10, page 503
Refraction or bending of waves provide scientists information on the composition and interior of Earth.
Refraction

25. Refraction is the bending of light. Pencil looks distorted.
Pencil looks nearer to the surface.
Pencil looks distorted.

26. Refraction is the bending of light.

27. 17. How are we affected by Earthquakes?

28. Destruction of properties
17. How are we affected by Earthquakes?
Liquefaction
tsunami
Destruction of properties
landslide
avalanche

29. Soil turns to mud. Liquefaction
17. How are we affected by Earthquakes?
Liquefaction
Soil turns to mud.

30. tsunami 17. How are we affected by Earthquakes?

31. Destruction of properties
17. How are we affected by Earthquakes?
Destruction of properties

32. landslide 17. How are we affected by Earthquakes?

33. avalanche 17. How are we affected by Earthquakes?

34. Destruction of properties
17. How are we affected by Earthquakes?
Liquefaction
tsunami
Destruction of properties
landslide
avalanche

35. 18. What are earthquake waves?

36. Earthquakes waves are known as seismic waves.
18. What are earthquake waves?
Earthquakes waves are known as seismic waves.

37. 19. How fast are seismic waves?

39. 13 minutes 9 minutes 3 minutes

40. 23 minutes 16 minutes 5 minutes

41. Seismic waves travel at a speed of
19. How fast are seismic waves?
Seismic waves travel at a speed of
8 kilometers/second or 5 miles/second.

42. 20. How are the layers of Earth different from one another?

44. 20. How are the layers of Earth different from one another?
Crust is the thinnest layer and mostly made of rocks, the mantle is the thickest layer, the outer core is liquid iron while the inner core is a spinning solid iron.