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Waves Study Stack
| Question | Answer |
|---|---|
| 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
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