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What is sound?
A form of energy that travels in waves.
Vibrations that travel through the air or other particles and can be heard by ears
What must you have in order to have sound?
To have sound, we must have:
1. Something to produce vibrations (vocal cords, piano, etc)
2. Something the vibrations can travel through (air)
3. Something to receive the vibrations (ears)
What is a form of energy that travels in waves?
What are we measuring when we measure a sound wave's frequency?
the pitch or speed of the vibration (sound wave) that occur in one second.
What is frequency of sound?
The speed of the vibration, and this determines the pitch of the sound.
What are the two qualities of sound that we measure?
Sound frequency and sound amplitude
What are we measuring when we measure a sound wave's amplitude?
The size (volume) of the vibration which determines how loud or quiet the sound is.
What are the three states of matter?
Solid, liquid, and gas
Which state of matter does sound travels through the fastest?
Which state of matter does sound travel through the slowest?
Which state of matter does sound travel through the medium or middle (not the fastest or slowest)?
What can sound travel through? List in order of least dense to most dense:
Gas (Least Dense)
Solid (Most Dense)
Put the states of matter in order of how fast sound travels through them
Solid (Sound travels fastest)
Gas (Sound travels slowest)
What are the 2 qualities of sound we can measure?
Amplitude (Loudness or Quiet Sound and Volume)
Frequency (Pitch and speed)
What is Amplitude?
The Size (volume) of the vibration wave
What is Loudness?
How much energy the vibration has or how large is the vibration.
What is Pitch?
Fast vibrations have high pitch
Slow vibrations have low pitch
Speed and frequency of a soundwave
Why does sound travel through solids the fastest?
the particles are so close together (more dense).
High points on a wave
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Low points on a wave
What is quiet or soft sound?
The lowest amplitude
What is volume?
The amount of sound depends on the amount of particles disturbed. The more particles disturbed, the louder the sound.
What is highest pitch?
High frequency or the faster the waves (speed).
What are particles?
Tiny or very small bits of something
What is pitch?
The quality of a sound as high or low.
What form of energy is moving through a solid medium?
What is an example of a liquid medium for sound?
Sound traveling through water
What is an example of a gas medium for sound?
Sound traveling through the atmosphere
Can a vacuum be a medium for sound?
Why can't a vacuum be a medium for sound?
There are no particles to vibrate.
What is a vacuum?
A space without any matter or particles.
What is lowest pitch?
Low frequency or slower the waves travel (speed).
What is loud sound?
The highest amplitude or volume.
The denser the medium
the faster the sound waves
Which states of matter is the most dense?
Which states of matter is the least dense?
Which states of matter is the medium (middle) dense?
describes the compactness of a substance's particles.
Energy or sound
Can push and disturb particles.