Mr' Loths

1
Sound

• Mr. Loths
• 7th Grade Science
• Created by Mr. Whittaker

2
Sonar

• Sound Navigation and Radar
• Sonar uses sound waves to determine the
  depth distance of objects through gases, water or
  solids.

3
Sound
Two components (needs)
1. vibration
solid
liquid
2. medium , , or
gas
Click here to see how a sound wave moves
4
Sound Facts

• Speed ? Faster in solid than liquid than gas.
• Lightning ? count seconds between bolt of light
  and the sound of the thunder, then divide by 5
  miles away.
• Amplitude measured in a decibel
• Frequency pitch
• Ultrasonic beyond our hearing
• Ex. elephants, whales, dog whistles, kidney
  stone, treatment, ultrasound test, ultrasound
  treatment, sonogram