Podcast
Questions and Answers
A wave has a frequency of 5 Hz and a wavelength of 2 meters. What is the wave's speed?
A wave has a frequency of 5 Hz and a wavelength of 2 meters. What is the wave's speed?
- 2.5 m/s
- 7 m/s
- 0.4 m/s
- 10 m/s (correct)
If the period of a wave is 0.2 seconds, what is its frequency?
If the period of a wave is 0.2 seconds, what is its frequency?
- 0.2 Hz
- 2 Hz
- 0.05 Hz
- 5 Hz (correct)
Which of the following applications does NOT typically utilize ultrasound technology?
Which of the following applications does NOT typically utilize ultrasound technology?
- Scanning soft tissues to diagnose medical conditions
- Monitoring fetal development during pregnancy
- Locating submarines (correct)
- Detecting flaws in metal castings
What is a key distinction between RADAR and SONAR?
What is a key distinction between RADAR and SONAR?
Which property is NOT common to all forms of electromagnetic radiation?
Which property is NOT common to all forms of electromagnetic radiation?
Which of the following scenarios correctly describes the movement of particles in relation to the direction of wave travel?
Which of the following scenarios correctly describes the movement of particles in relation to the direction of wave travel?
Consider two waves: Wave A has a frequency of 10 Hz and Wave B has a frequency of 20 Hz. How do their wavelengths compare, assuming they are traveling through the same medium?
Consider two waves: Wave A has a frequency of 10 Hz and Wave B has a frequency of 20 Hz. How do their wavelengths compare, assuming they are traveling through the same medium?
Imagine you are holding a slinky. How could you create both a transverse and a longitudinal wave using it?
Imagine you are holding a slinky. How could you create both a transverse and a longitudinal wave using it?
If the distance between two consecutive compressions in a longitudinal wave is 2 meters, what does this measurement represent?
If the distance between two consecutive compressions in a longitudinal wave is 2 meters, what does this measurement represent?
How does the amplitude of a wave relate to the energy it transmits?
How does the amplitude of a wave relate to the energy it transmits?
Flashcards
Longitudinal Wave
Longitudinal Wave
Particles vibrate parallel to the direction of wave travel.
Transverse Wave
Transverse Wave
Particles vibrate perpendicular to the direction of wave travel.
Wave Frequency
Wave Frequency
Number of complete waves passing a point in one second.
Wavelength
Wavelength
Signup and view all the flashcards
Wave Amplitude
Wave Amplitude
Signup and view all the flashcards
Wave Speed Formula
Wave Speed Formula
Signup and view all the flashcards
Frequency Formula
Frequency Formula
Signup and view all the flashcards
Ultrasound
Ultrasound
Signup and view all the flashcards
SONAR
SONAR
Signup and view all the flashcards
RADAR
RADAR
Signup and view all the flashcards
Study Notes
Types of Waves
- Waves can be longitudinal or tranverse.
Logitudinal Waves
- Particles vibrate parallel to the direction of wave travel in longitudinal waves.
- Longitudinal waves are made of compression and rarefaction.
- Sound waves, ultrasound waves, slinky spring waves, and P-type earthquake waves are examples of longitudinal waves.
Transverse Wave
- Particles vibrate perpendicular to the direction of wave travel in transverse waves.
- Water waves, slinky spring waves, waves on strings and ropes, and electromagnetic waves are examples of transverse waves.
Describing Waves
- Frequency is the number of complete waves passing a fixed point in a second, measured in Hertz (Hz).
- The symbol for frequency is 'f'.
- Wavelength is the distance between two consecutive crests or troughs, measured in meters (m).
- The symbol for wavelength is "λ".
- Amplitude is the greatest displacement of the wave from its equilibrium position, measured in meters.
Wavelength & Amplitude of Longitudinal Waves
- The amplitude of a longitudinal wave is the maximum distance a particle moves from the center of its motion.
- The wavelength is the distance between the center of one compression and the next.
The Wave Equation
- Wave speed is calculated by: Wave speed = Frequency * wavelength
- The formula is represented as: v = f * λ
Echoes
- Audible sound ranges in frequency from 20Hz to 20000Hz.
- Ultrasound has a frequency of more than 20000Hz and is also known as echo.
- Ultrasound applications include:
- Scanning a mother's womb for checking the development of the baby
- Scanning metal castings for faults/cracks
- Scanning soft tissues to diagnose cancer
- Finding fish locations for sea trawlers
- Mapping the surface of the ocean floor in oceanography
Sonar
- Sonar stands for Sound Navigation And Ranging.
- It is used to find submarines and fish
Radar
- Radar stands for Radio Detection And Ranging.
- It was used in WW2 to find enemy aircraft.
Electromagnetic Radiation
- Electromagnetic radiation is a member of electromagnetic spectrum, with common properties
- Electromagnetic radiation can travel in a vacuum
- Electromagnetic radiation travels at the same speed in a vacuum
- Electromagnetic radiation are transverse waves
- Electromagnetic radiation carry energy, can reflect, and can refract.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
