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Science test
| Question | Answer |
|---|---|
| Waves that can only travel through matter | mechanical⚙️ |
| the bending of a wave caused by a change in its speed as it moves to a different medium | Refraction |
| The amount of time it takes one wavelength to pass a point | Period🔵 |
| the ability of 2 or more waves to combine and form a new wave | interference🆕 |
| measure of how many wavelengths pass a fixed point each second | frequency📏 |
| wave in which the matter move perpendicular to the direction the energy travels | transverse↘️ |
| the bending of waves around a barrier | deffraction⤵️ |
| highest point of a transverse wave | crest🌙 |
| waves that do not need a medium to transfer energy | electromagnetic🚫 |
| region where the medium is dense in a longitudinal wave | compression💪 |
| distance between 1 point in a wave to the next nearest point just like it | wavelength🔜 |
| material through which a wave transfers energy | medium🚝 |
| less dense region of a longitudinal wave | rarefraction🪶 |
| measure of energy in a wave | amplitude📐 |
| lowest point of a transverse wave | trough⬇️ |
| when a wave strikes a barrier and bounces back | reflection🪞 |
| repeating disturbance that transfers energy through matter or space | wave🔁 |
| wave in which matter in the medium moves parallel to the direction the energy travels | longitudinal⬇️⬇️ |
| waves transfer_____ | energy⚡️ |
| _____is not transferred by waves | matter🚫🚆 |
| if the frequency of a vibrating object decrease how does the wavelength change? | increases➕ |
| _____ type of waves do not need a medium to transfer energy | electromagnetic🚫⚡️ |
| what is a mechanical wave? | wave which requires medium🌊 |
| 2 types of mechanical waves | Transverse, longitudinal2️⃣ |
| transverse | moves at 90 degrees🔼 |
| longitudinal | moves parallel⬇️⬇️ |
| _____ is the type of medium that sound travels the fastest | solids💨 |
| ____ is the type of medium that light travels fastest | vacuum🧹 |
| Seismic waves | tectonic plates moving under earth’s crust🌏 |
| 3 characteristics of a wave you can measure | wavelength, frequency, amplitude📏 |
| what is meant by frequency of a wave? Unit? | # of waves that pass through a point in 1 second, Hz1️⃣ |
| What is meant by period of a wave? unit? | Time of one cycle, m/s🔄 |
| if frequency of given wave increases , what happens to the wavelength? | decreases➖ |
| difference between a sound wave w/ a large amplitude and one with small amplitude? | sound wave w/ larger amplitude will sound louder📣 |
| How can speed of wave be changed? | change medium💨🌊 |
| how does the frequency of a wave change when the wavelength of the wave increases? | It will decrease➖ |
| what can occur when a wave passes from one medium to another? | refraction -bending. Diffraction- bends around Absorption-TE Reflection- bounces back |
| how is an echo produced? | reflecting sound waves 🪞👂🏻 |
| Why does a tree in the path of sunlight create a shadow instead of light spreading around the tree? | the small wavelength of light does not allow for much diffraction🔆🌳 |
| what happens to the energy of a wave that gets absorbed as it moves into a new medium? | transferred to TE🧽 |
| when looking at a straw in a glass of water, why does the straw look broken? | refraction- speed of the light changes as it enters the water causing the water to bend💦 |
| The angle of incidences is equal to _____ | the angle of reflection 📐🪞 |
| what are 2 types of interference? | constructive interference, destructive interference 2️⃣ |
| How does constructive interference work? | Increases amplitude➕ |
| how does destructive interference work? | Decreases amplitude ➖ |
| why does a red apple appear red?🍎 | all frequencies of light are absorbed except red, which is reflected🔴 |
| other than communication, how can sound waves be used? | ultrasounds, breaking up kidney stones 👶🫁🪨 |
Created by:
Caydee $mith