Questions and Answers
Which of the following relate to sound waves?
Which of the following relate to light waves?
Which of the following relate to water waves?
What is the medium that seismic waves travel through?
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Sound waves are an example of transverse waves.
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Light waves are an example of transverse waves.
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A wave transports energy but not matter.
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Visible light waves require a medium in which to travel.
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Radio waves are an example of electromagnetic waves.
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Sound waves are an example of longitudinal waves.
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A wave that requires a medium is called a ___ wave.
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A wave that causes the particles of the medium to vibrate perpendicular to the direction the wave travels is a ___ wave.
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A wave that causes the particles of the medium to vibrate parallel to the direction the wave travels is called a ___ wave.
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What is the frequency of a wave that has a period of 0.25 seconds?
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What is the period of a wave if it breaks every 5 seconds?
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What is the wavelength of the wave indicated in the above diagram?
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What is the amplitude of the above wave?
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What is the wavelength of a wave that is moving at a speed of 30 m/s with a frequency of 10 Hz?
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What does the frequency of a sound wave determine?
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How loud a sound is depends on what?
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What is the difference between visible light and x-rays?
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What kind of curve is a good mathematical model for representing transverse waves?
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The color of light is determined by what?
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A wave with a frequency of 0.5 Hz and a speed of 10 m/s has a wavelength of what?
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The greater the frequency of the wave in a particular medium, the greater the speed of the wave.
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The energy of a mechanical wave depends on the amplitude of the wave.
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As the period of the wave increases, the frequency increases.
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The color of visible light depends on the wavelength of the light.
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What do you call the highest point of a transverse wave?
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What do you call the greatest distance that particles in a medium move from their normal position when in a wave?
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What do you call the time required for one full wavelength to pass a certain point?
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What do you call the number of vibrations that occur in a 1-second time interval?
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The particle model of light explains how light can travel through empty space without a medium.
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The amount of energy in a photon of light is proportional to the frequency of the corresponding light wave.
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Which type of electromagnetic waves has the highest frequency?
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Which type of electromagnetic radiation is used to kill cancer cells?
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The two most common models of light describe it as a wave or as a stream of what?
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In the particle model of light, individual 'packets' of light are called?
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In a vacuum, all light travels at a speed of ___ m/s.
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___ is used for cooking as well as for communications.
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Study Notes
Sound Waves
- Sound waves require a medium to travel through.
- They are classified as longitudinal waves, where particle vibrations are parallel to the direction of wave travel.
Light Waves
- Light waves are electromagnetic waves and do not require a medium to travel.
- They are classified as transverse waves, where particle vibrations are perpendicular to the direction of wave travel.
- The frequency of light determines its color, and higher frequencies correspond to higher energy and shorter wavelengths.
Water Waves
- Water waves transport energy without transporting the water itself.
- They can exhibit characteristics of both transverses and longitudinal waves.
Seismic Waves
- Seismic waves travel through rocks and materials within the Earth.
Wave Properties
- A mechanical wave requires a medium, while electromagnetic waves do not.
- The period of a wave is the time for one full wavelength to pass a point, and the frequency is the number of vibrations in one second.
- Amplitude refers to the maximum distance particles move from their normal position, determining sound loudness and wave energy.
Relationships between Wave Properties
- Frequency (Hz) is the inverse of the period (seconds) – as period increases, frequency decreases.
- A wave's speed is the product of its frequency and wavelength. For instance, a wave moving at 30 m/s with a frequency of 10 Hz has a wavelength of 3 m.
Electromagnetic Spectrum
- Radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays are all types of electromagnetic waves; they differ in frequency and wavelength.
- Gamma rays have the highest frequency in the electromagnetic spectrum and are used in cancer treatment.
Mathematical Representation
- Sine curves are effective models for representing transverse waves.
Additional Concepts
- The effect of amplitude on mechanical waves correlates with energy; greater amplitude indicates higher energy.
- Photons are the packets of light in the particle model, and all light travels at about 3.0 x 10⁸ m/s in a vacuum.
True or False Statements
- A wave transports energy but not matter: True
- Visible light waves require a medium to travel: False
- Sound waves are longitudinal: True
- The greater the frequency, the greater the wave speed in a uniform medium: True
- The energy of a mechanical wave depends on amplitude: True
- The color of visible light is determined by wavelength: True
Unique Wave Characteristics
- The highest point of a transverse wave is called the crest, while the lowest point is called the trough.
- The wavelength can be calculated based on the period and frequency relationship.
Application of Waves
- Microwaves are utilized in cooking and communications due to their ability to transmit energy efficiently.
Studying That Suits You
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Description
Test your knowledge of waves with these flashcards focusing on sound, light, and water waves. Each card provides questions about the characteristics and media of different types of waves. Perfect for studying key concepts in Physics Chapter 11.
