Two models of the Earth have identical solid mantles. Model P has a solid outer core. Model Q has a liquid outer core. Both cores can transmit P-waves.
Which observation would distinguish between the models?
P-waves cross the mantle and are transmitted through the outer core.
S-waves are detected after travelling through solid rocks in the crust.
P-waves are detected after travelling through solid rocks in the crust.
S-waves cross the mantle but are not transmitted through the outer core.
112 exam-style questions on Edexcel GCSE Physics 4.3 Sound, ultrasound and infrasound, covering 4.3.1 Sound waves, vibrations and the human ear, 4.3.2 Ultrasound and infrasound, 4.3.3 Uses of ultrasound and infrasound, and 4.3.4 Sound waves passing between media. Each one has a worked solution and a mark scheme showing where the marks go.