Waves For Detection And Exploration (physics Only) (ht Only) (GCSE Physics)

Which statement correctly distinguishes P-waves and S-waves produced by earthquakes?

A radar pulse is used to measure the distance to a metal ship. If the pulse round-trip time is 2.0 × 10^-3 s and the speed of microwaves is 3.0 × 10^8 m/s, what is the distance to the ship?

A ground-penetrating radar (GPR) pulse has a round-trip time to a buried object of 1.0 × 10^-8 s in soil where pulse speed ˜ 1.5 × 10^8 m/s. What is the burial depth?

Which of the following correctly compares radio waves and gamma rays used in exploration?

Which statement about wave energy and amplitude is correct for exploration pulses?

Which detection method is most appropriate for mapping shallow archaeological ruins a few meters below ground with high spatial detail?

A surveyor uses two-way travel time of a seismic reflection from a horizontal layer. If the one-way travel time to the layer is 0.20 s and seismic speed in the medium is 2000 m/s, what is the depth?

Which of the following best explains why radio-astronomy arrays combine signals from widely spaced antennas (interferometry)?

A seismic P-wave travels 8.0 km in 1.0 s. What is its speed and what type of motion is it?

Which property of a detection system improves spatial resolution (ability to resolve small features) the most?

A seismometer records a P-wave arrival 40 s before the S-wave. Given P-wave speed = 6.0 km/s and S-wave speed = 3.5 km/s, estimate the distance to the earthquake epicentre (use ?t method).