Key words
Help!
|
|
||||
|---|---|---|---|---|---|
| Amplitude | The height of the wave from the starting point to the crest (or trough)
🗑
|
||||
| Wave height | The total height from the crest to the trough
🗑
|
||||
| Frequency | The number of waves per second
🗑
|
||||
| Hertz | The unit for frequency (Hz)
🗑
|
||||
| Intensity | Loudness or volume of a sound
🗑
|
||||
| Pitch | How high or low a note sounds
🗑
|
||||
| Vibrate | Move backwards and forwards. Creates waves.
🗑
|
||||
| Vocal folds | Flaps of skin in the throat that vibrate to make sound
🗑
|
||||
| Medium | Any substance through which something travels
🗑
|
||||
| Particles | The tiny pieces that everything is made out of
🗑
|
||||
| Pressure wave | Waves like sound waves where the vibration of particles transfers energy
🗑
|
||||
| Sound wave | Vibrating particles that transfer energy and are detected by our ears
🗑
|
||||
| Vacuum | A space with no particles
🗑
|
||||
| Density | A measure of a substance’s mass per unit volume
🗑
|
||||
| Oscilloscope | An instrument that shows a compression sound wave as a visual transverse wave
🗑
|
||||
| Compression wave | Wave that vibrates back and forth along the direction of energy transfer
🗑
|
||||
| Transverse wave | Wave that vibrates up and down along the direction of energy transfer
🗑
|
||||
| Trace | Line that the oscilloscope makes
🗑
|
||||
| Absorb | Take in
🗑
|
||||
| Amplify | Make bigger
🗑
|
||||
| Auditory nerve | He nerve that carries impulse from an ear to the brain
🗑
|
||||
| Auditory range | The range of frequencies that an animal can hear
🗑
|
||||
| Cochlea | The part of the ear that changes vibrations into electrical impulses
🗑
|
||||
| Decibel | Unit for measuring loudness of sound (dB)
🗑
|
||||
| Diaphragm (physics) | A thin sheet of flexible material
🗑
|
||||
| Ear canal | The tube that leads to the ear drum
🗑
|
||||
| Ear protection | Ear plugs or covers for the ears that stop loud sounds damaging the ears
🗑
|
||||
| Eardrum | A thin membrane inside the ear that vibrates when sound reaches it
🗑
|
||||
| Impulse | An electrical signal that travels in the nervous system
🗑
|
||||
| Infrasound | Sound waves less than 20Hz
🗑
|
||||
| Ultrasound | Sound waves above 20 000Hz
🗑
|
||||
| Microphone | An instrument that converts sound waves into electrical current or voltage
🗑
|
||||
| Sound intensity meter | An instrument that measures the loudness of sound
🗑
|
||||
| Communication | Transferring information
🗑
|
||||
| Echo | A reflected sound
🗑
|
||||
| Echolocation | Finding objects by emitting sounds and listening for echos
🗑
|
||||
| Physiotherapist | Someone who treats injuries or other physical problems with physical treatments
🗑
|
||||
| Reflect | To bounce off a surface rather than pass through or be absorbed
🗑
|
||||
| Sonar | A machine used in the sea that sends sound waves and listens for echos
🗑
|
||||
| Transmit | To pass through a substance
🗑
|
||||
| Longitudinal wave | See compression wave
🗑
|
||||
| Crest | The top of a wave
🗑
|
||||
| Trough | The bottom of a wave
🗑
|
||||
| Superposition | When two waves meet and their effects add up or cancel out
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
andrewweng0406
Popular Science sets