Ultrasound (T)

• What is the frequency range of ultrasound?

  At least 20,000 Hertz
• What is a key feature of ultrasound waves when they encounter different densities?

  They partially reflect at the boundary between two different densities.
• How can ultrasound be used to calculate distances?

  • Measure the time it takes for the ultrasound pulse to travel to an object and back
  • Use the equation: distance = speed × time
• What types of images can ultrasound scanners produce?

  Images of internal organs and fetuses
• Why is ultrasound considered safer than x-rays?

  Because it does not cause mutations and does not increase the risk of cancer.
• What are some industrial applications of ultrasound?

  • Detect hidden defects in materials
  • Inspect welds for problems
• How do you calculate the depth of the seabed using ultrasound?

  By dividing the total distance by 2.
• If an ultrasound pulse takes 1.2 seconds to return and the speed of ultrasound in water is 1600 m/s, what is the total distance traveled?

  1920 meters
• What is the depth of the seabed if the total distance traveled by the ultrasound is 1920 meters?

  960 meters