Describe the use of ultrasound in medical imaging (such as a prenatal scan). Include a diagram.
Match each of the following waves to its most appropriate speed: (1) Gamma rays in a vacuum, (2) Sound waves in water, (3) Infrared radiation in air. Select the corresponding speed from the following options: [A] 340 m/s340\text{ m/s}340 m/s (3.4×102 m/s3.4 \times 10^2\text{ m/s}3.4×102 m/s), [B] 1500 m/s1500\text{ m/s}1500 m/s (1.5×103 m/s1.5 \times 10^3\text{ m/s}1.5×103 m/s), [C] 150 000 m/s150\,000\text{ m/s}150000 m/s (1.5×105 m/s1.5 \times 10^5\text{ m/s}1.5×105 m/s), [D] 300 000 000 m/s300\,000\,000\text{ m/s}300000000 m/s (3×108 m/s3 \times 10^8\text{ m/s}3×108 m/s), [E] 3 000 000 000 m/s3\,000\,000\,000\text{ m/s}3000000000 m/s (3×109 m/s3 \times 10^9\text{ m/s}3×109 m/s).
295 exam-style questions on CIE IGCSE Physics Sound, covering Sound. Each one has a worked solution and a mark scheme showing where the marks go.