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Waves Study Stack

QuestionAnswer
A wave is a rhythmic disturbance that transfers energy
Name the 2 types of waves. Transverse and Compressional
Light is a type of transverse wave
Sound is a type of compressional wave
What type of wave moves up and down? Transverse
What type of wave moves side to side? Compressional
What are crests? The high points of a transverse wave
What are troughs? The low points of a transverse wave.
What do we call the distance from crest to crest or trough to trough? Wavelength
What do we call the number of crests to pass a point in one second? frequency
What is the relationship between frequency and wavelength? The higher the frequency, the shorter the wavelength. The lower the frequency, the longer the wavelength.
What are the units used to measure freqency? Hertz or crests/sec
What are the units used to measure velocity? meters/second
What are the units used to measure wavelength? meters
When we do math calculations, we always round our numbers to the nearest TENTH!
When we do math problems we always show all our WORK
What is reflection? When a wave strikes a barrier and bounces back
What is the Law of Reflection? Angle in =Angle out
When waves bend as they pass from one medium into another we call it REFRACTION
When a pencil appears to bend as it enters water and when we create a rainbow with a prism we are showing examples of REFRACTION
All parts of the EM spectrum have what 3 things in common: 1. They are transverse waves, 2. They all travel at the speed of light. 3 None of them need a medium to travel.
What is the only difference between parts of the EM spectrum? They have different frequencies and wavelengths.
Visible light can be broken into the COLORS!
Why does a red shirt appear red? It reflects the wavelength that represents red.
Why do black objects appear black? They are absorbing all the wavelengths and reflecting NONE.
Why do white objects appear white? They are reflecting all wavelengths and absorbing NONE.
If we cannot see anything through an object we would call it OPAQUE
If we can see everything though an object we would call it TRANSPARENT
If we can only see shadows through an object we would call it TRANSLUCENT
We use sunscreen to protect us from ultraviolet (UV) rays
Sound is a ________________ through a medium. VIBRATION
What do we call the close together areas of a compression wave? COMPRESSIONS!
What do we call the spread apart areas of a compression wave? RAREFACTIONS
What do we call the distance between compressions? Wavelength
Sound travels faster through what phase of matter? SOLIDS BECAUSE THE PARTICLES ARE CLOSE TOGETHER
Does sound travel faster in warm air or cool air? WARM
Name some differences between light and sound. Light travels faster. Sound needs a medium...light doesn't. Light is transverse....sound is compressional
Why would we NEVER find sound on the EM spectrum? All parts of the EM spectrum are transverse. Sound is compressional.
What is a medium? The material through which a wave travels.
Created by: cwalczak