Khan Academy
Khan Academy: The Effects of Ultrasound on Different Tissue Types
This is a five-question quiz related to the passage "The Effects of Ultrasound on Different Tissue Types."
Khan Academy
Khan Academy: How Movements Influence an Ultrasound
Read the passage "How Movements Influence an Ultrasound" and complete the related five-question quiz.
Khan Academy
Khan Academy: Using Ultrasounds to Measure Blood Flow Velocity
Questions related to ultrasound and blood flow velocity are provided on this resource. This study resource from Khan Academy provides practice questions for the MCAT.
Khan Academy
Khan Academy: Doppler Effect in Living Tissue
Read a passage about the doppler effect in living tissue and answer the follow-up questions.
Wikimedia
Wikipedia: Ultrasound
Wikipedia offers information on the basics of ultrasound, "Sound or vibrations with frequencies too high to be audible by the human ear."
PBS
Pbs Teachers: Real Scientists: Audio Engineer
Discover how an engineer uses ultrasound to focus and aim sound waves with the "Audio Spotlight" that he developed.
WebMD
Medicine Net: Ultrasound
This site from MedicineNet.com gives an Ultrasound description, why they're performed, risks, and patient preparation. A thoughrough explanation of the process is provided.
Physics Hypertextbook
The Physics Hypertextbook: The Nature of Sound
Study the details of sound from characteristics to speed, ultrasound, infrasound, and other aspects of sound waves.
Other
Sweetwater.com: What Is Infrasonic?
This resource features a basic definition of infrasonic. It also explains the difference between infrasonic and subsonic.
Other
Medinfo.co.uk: Details of Ultrasound Scanning
An explanation of ultrasound scanning: the procedure, its purpose, and its uses in viewing a fetus, heart valves, and so on.