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| What is a mechanical wave? |
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Definition
a disturbance in matter that carries energy from one place to another Also: one of the two types (Mechanical & Electromagnetic) They require a medium to travel |
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Definition
| The material that a wave travels through. |
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| What are the three types of mediums? |
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Definition
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| Name the 3 types of mechanical waves: |
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Definition
Transvers Longitudinal Surface |
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| What type of wave travels at right angles(perpendicular) to the movement of the medium? |
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Definition
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| The highest point in a transverse wave above the resting point is called the_____________. |
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| The lowest point below the resting point in a transverse wave is called the ____________. |
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Term
Identify the letters A, C, D on the diagram below: [image] |
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Definition
A = the crest C = the trough D = resting position |
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Name all of the possible ways you could measure the wavelength of the wave below: [image] |
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Definition
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Definition
Name all of the possible ways you could measure the wavelength on the diagram below: [image] |
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Where is the amplitude of this wave visible? [image] |
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Definition
| The amplitude is the distance below the A to the resting point. |
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Term
| What type of wave is visible in this image?[image] |
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Definition
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| What type of wave is made up of comressions and rarefactions? ro |
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Definition
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What type of wave is in the picture below? [image] |
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Definition
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What is the A part of this wave called? [image] |
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Definition
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What is the B part of this wave called? [image] |
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Definition
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Term
What is C in the diagram below? [image] |
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Definition
| The wavelength of a longitudinal wave |
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Term
A wave in which the vibration of the medium is parallel to the direction the wave travels is called a ____________wave. |
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Definition
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Term
| A wave that travels along the surface of two media is called a _______________wave. |
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Definition
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Term
| Does a surface wave transport an object? |
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Definition
No, it moves in a circular motion |
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Term
Give an example of each type of wave: 1. Transverse 2. Longitudinal 3. Surface |
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Definition
1. some earthquake waves 2. sound waves 3. waves in water |
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Term
| the number of times a cycle is completed in a given time is known as |
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Definition
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Term
| What is the unit used to measure the frequency of waves? |
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Definition
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| What is a wave's wavelength? |
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Definition
The distance between the same point on two waves. Crest to crest Trough to trough |
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Term
| What is the standard unit for measuring wavelengths |
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Definition
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Term
| What is the equation for measuring wave speed? |
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Definition
| Speed = wavelength x frequency |
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Term
| What is the relationship between a wave's wavelength and frequency? |
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Definition
It is an inverse relationship. If a wavelength increases the frequency will decrease. |
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Term
| A wave on a rope has a wavelength of 2.0 m and a frequency of 2.0 Hz. What is the speed of the wave? |
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Definition
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Term
| A motorboat is tied to a dock with its motor running. The spinning propeller makes a surface wave in the water with a frequency of 4 Hz and a wavelength of 0.1 m. What is the speed of the wave? |
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Definition
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Term
The maximum displacement from a wave's resting position is known as the wave's ____________. Its also known as the maximum height of the crest or maximum depth of the trough. |
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Definition
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Term
| What is the relationship between the amount of energy in a wave and the wave's amplitude? |
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Definition
| The more energy a wave has, the greater the amplitude. |
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Term
| T/F A wave that is reflected will have a change in wavelength. |
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Definition
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Term
| T/F A wave that is reflected will have a change in frequency. |
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Definition
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Term
T/F A wave that is reflected can be flipped upside down. |
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Definition
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Term
T/F A wave that is refracted will have a change in wavelength. |
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Definition
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Term
| T/F A wave that is refracted will have a change in frequency. |
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Definition
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Term
| T/F A wave that is refracted will bend as it passes through the barrier. |
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Definition
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Term
| T/F In order for a wave to bend as it passes through a barrier it must enter at an angle. |
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Definition
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Term
| Why does a wave bend as it enters a new medium? |
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Definition
One side of the wave will slow down or speed up causing it to bend. |
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Term
| T/F During difraction a wave passes through a new medium. |
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Definition
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Term
| In order for difraction to occur you must have two things. Name the two requirements. |
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Definition
1. A vibration travelling through a medium. 2. An object |
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Term
Draw a picture of a wave that: Reflects Refracts Difracts |
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Definition
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Term
| When two waves overlap or combine it is called ________________. |
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Definition
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Term
| Name the two types of interference. |
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Definition
| Constructive & Destructive |
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Term
| If the crests of two waves combine to form a greater amplitude what type of interference is this? |
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Definition
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Term
| If a incoming and outgoing wave have synchronized frequencies, what type of wave is this? |
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Definition
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Term
| A wave that appears to stay in one place without moving is called a __________. |
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Definition
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Term
| When two waves combine to form a smaller amplitude what type of intereference has occured? |
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Definition
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Term
[image]What is A called in the diagram below? |
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Definition
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Term
What are B called in the digram below? [image] |
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Definition
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Term
What kind of wave is drawn in the diagram? [image] |
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Definition
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Term
| What properties explain the behavior of sound? |
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Definition
speed intensity or loudness frequency or pitch |
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Term
| T/F Sound waves need a medium through which to travel. |
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Definition
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Term
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Definition
| Intensity is the rate at which a wave's energy flows through a given area |
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Term
| What unit is used to measure loudness or intensity? |
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Definition
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| Which travels faster? Sound or Light waves? |
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Definition
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Definition
| Loudness is a physical response to the intensity of sound, modified by physical factors |
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Definition
| Pitch is the frequency of a sound as you perceive it. Pitch does depend upon a wave's frequency. |
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Term
| Which properties of sound depend upon your age and the health of your ears? |
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Definition
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Term
| What is sonar and for what is it used? |
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Definition
| Sonar is a technique for determining the distance to an object under water. Sonar stands for sound navigation and ranging. |
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Term
| What kind of waves are used in a medical ultrasound? |
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Definition
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Term
| What is the Doppler effect? |
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Definition
| Doppler effect—a change in sound frequency caused by motion of the sound source, motion of the listener, or both. |
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Term
| Give an example when you might experience the Doppler effect? |
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Definition
| When a siren on a police car or ambulance passes you. |
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Term
| Trace the path of a sound wave from the air around you to what you think/hear. |
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Definition
| The outer ear gathers and focuses sound into the middle ear, which receives and amplifies the vibrations. The inner ear uses nerve endings to sense vibrations and send signals to the brain. |
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Term
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Definition
| Resonance is the response of a standing wave to another wave of the same frequency. |
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