Preknowledge: What do you think is the difference between transverse and longitudinal waves?
Longitudinal wave— wave motion is parallel to the particle motion Transverse wave— wave motion is perpendicular to the particle motion (like in water wave)
Transverse vs. Longitudinal waves
Wave: A disturbance that travels through a medium, transferring energy from one place to another
Wavelength: horizontal length from wave peak to peak Frequency : # of waves produced in a given amount of time Amplitude: vertical height of a wave Wave speed: mechanical is determined by the medium in which the wave travels, such as air, water or a solid (except if it is light wave)
Electromagnetic waves—waves that consist of changing electric and magnetic fields that DO NOT require a medium to travel Light is an example of an electromagnetic wave.
What is an EM Wave?
Mechanical Wave - wave causes objects to vibrate Mechanical waves cause medium to vibrate examples: slinky, water, stadium, and jump rope waves
What is a Mechanical Wave?
Which type of wave do 10th graders think is the most interesting?
- Sound waves
- Light waves
- Waves with a combination of both speed and frequency
The speed of waves (if not a light wave) is related to the frequency, meaning the higher the frequency, the shorter the wavelength Waves have different characteristics, such as amplitude, wavelength, and frequency.
Did you know?
What is the difference between mechanical and electromagnetic waves?
How can we measure wave speed and frequency?
Mechanical waves will have increased speed with increased frequency Electromagnetic waves all move at the speed of light: 3 x 10 ^8 meters/ sec Sun is 93 million miles away, light takes 8.3 min to reach Earth
14. Personalised Feedback
What are the differences between transverse mechanical and transverse electromagnetic waves, and how do their characteristics: wavelength affect frequency?
What characteristics of a wave can help you distinguish between different types of waves?
How does the speed and frequency of a wave affect its behavior?