Seismic Waves and Earth’s Interior PPT

Seismic Waves and Earth’s Interior PPT 2022 Zaniyah Peters Name: ______________________________________________Period: ______ Date: ___________ Essential Question: How do I describe seismic waves? 1. What are the two types of seismic waves? Body Waves, Surface Waves ______________________________________ ______________________________________ 2. What are the two types of body waves? P-Wave, S-Wave ______________________________________ ______________________________________ 3. What produces seismic waves? Seismic waves are produced by Earthquakes ______________________________________ ______________________________________ 4. Which seismic wave can travel through earth? P-Waves can travel through Earth _______________________________________ _______________________________________ 5. Which seismic wave can travel to the mantle, not the outer core ( liquid iron)? P-Waves can travel to the mantle, not the outer core _______________________________________ _______________________________________ 6. Which seismic wave only travel on the earth surface? Surface Waves only travel on the Earth's surface _______________________________________ _______________________________________ 7. What are the two types of surface waves? Love Waves and Rayleigh Waves _______________________________________ _______________________________________ 8. Which seismic waves stay on Earth’s Surface? Surface Waves stay on Earth's surface ______________________________________ 9. Which seismic wave refracts and cannot penetrate the core? S-Waves refract and cannot penetrate the core _______________________________________ _______________________________________ 10. Which seismic wave can penetrate the core but refracts? P-Waves can penetrate the core but refract _______________________________________ _______________________________________ 11. In what directions do the S, P , and Surface waves move? Transverse motion S wave:_________________________________ Compressional motion P wave:_________________________________ Circular motion Surface wave:____________________________ 12. What Are Seismic Waves? Seismic waves are vibrations that travel through __________________________________________ the Earth's interior or along its surface __________________________________________ __________________________________________ 13. Which is faster S or P wave? P-Waves are faster than S-Waves ___________________________________________ 14. Where do seismic waves travel slowest and fastest? Seismic waves travel slowest in the outer core and ___________________________________________ fastest in the Earth's crust ___________________________________________ ___________________________________________ 15. Which type of wave can penetrate the outer and inner core? P-Waves can penetrate the outer and inner core _________________________________________________ 16. What happens to S and P waves as they travel inside earth? S and P waves change speed and direction as they encounter __________________________________________________ different layers inside Earth __________________________________________________ 17. How are we affected by Earthquakes? Earthquakes can cause damage to buildings and infrastructure, __________________________________________________ trigger landslides, tsunamis, and disrupt ecosystems __________________________________________________ __________________________________________________ 18. What are earthquake waves? Earthquake waves are vibrations that propagate through __________________________________________________ Earth's interior and along its surface __________________________________________________ 19. How fast are seismic waves? Seismic waves can travel at various speeds, depending on __________________________________________________ the properties of the materials they pass through __________________________________________________ 20. Describe the layers of Earth. (solid, liquid, thick, thin, iron, rocks) Solid outer layer, composed of rock Crust:___________________________________________ Thick layer beneath the crust, mostly solid rock Mantle:_________________________________________ Liquid layer composed mainly of molten iron and nickel Outer core:______________________________________ Solid innermost layer, primarily made of iron and nickel Inner core: ______________________________________ Multiple Choice: Write the letter of your answer on the space before the number. B _____ 21. The epicenter of the earthquake is directly below the focus. A. True B. false A _____ 22. Waves move out through the ground from the source of an earthquake. A. True B. false D _____ 23. One of the results of an earthquake can be... A. Property Damage B. Landslide C. Tsunami D. All of the Above B ____ 24. The machine that measures the strength of an earthquake is called _____. A. Radiograph B. Seismometer C. Electrocardiograph D ____ 25. Earthquake foci ( focus, singular) are... A. More than 200 Miles C. Deep50-200 Miles Deep B. C. 0-50 Miles Deep D. All of the Above B ____ 26. Many earthquakes happen along the borders of... A. Countries B. Tectonic Plates C. Climate Zones D. None of the Above B ____ 27. Faults are only found near the edges of tectonic plates. A. True B. False A ____ 28. Energy waves from large earthquakes can move through large portions of the Earth. A. True B. False A ____ 29. Earthquakes can happen when the strain on weak rocks forces them to break and fracture. A. True B. False A ____ 30. Earthquakes can happen when there is a large amount of... A. Volcanic Activity B. High Tides C. Surface Construction D. All of the Above