Physics - Seismic Waves 0.0 / 5 ? PhysicsWavesGCSEAQA Created by: LunaShomeiRoseCreated on: 18-12-18 21:22 how do we know what the earth's structure is like? from earthquakes 1 of 15 an earthquake happens due to sudden movement in tectonic plates and earth's crust. this causes ___ waves seismic waves 2 of 15 seismic waves carry energy __ (Away from/closer to) earthquake away from 3 of 15 the waves travel through earth and can be detected by ___ seismometers 4 of 15 how does this help us know structure of earth? patterns of waves detected tells us about inside earth 5 of 15 two types of seismic waves. these are.... S waves and P waves 6 of 15 P waves can pass through solids and liquids. what type of waves are P waves? longitudinal 7 of 15 which wave travels faster? P waves 8 of 15 What type of wave are S waves? transverse 9 of 15 S waves can only travel through __ solids 10 of 15 seismic waves travel in ___ (curved/straight?) paths curved - due to density changes in earth 11 of 15 whats the S wave shadow zone? zone where S waves can't be detected 12 of 15 why can't they be detected here? S waves can't pass through liquid - earth must contain a liquid core 13 of 15 can P waves be detected anywhere? no. areas where can't be detected are called P wave shadow Zones 14 of 15 why are there shadow zones? P waves travel faster in solids so refract (slow down) in core (liquid) 15 of 15
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