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

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

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

Intensity I of a wave is proportional to which combination of wave properties?

A subsurface feature is detected by reflected waves arriving later than expected. Which change in the medium most likely causes the reflection arrival to be delayed?

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?

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?

A spacecraft uses radio ranging: if signal frequency is 2.4 GHz and the spacecraft moves away at 3.0 km/s, which effect shifts the received frequency and how?

Which of the following correctly describes a transverse wave?

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

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

In seismic exploration, why do S-waves not travel through the outer core of the Earth?