Final answer:
Continuous audible tones are known as steady tones, and they maintain a consistent amplitude and frequency. The loudness of sound is described by the intensity level or decibel. A tuning fork creates a periodic wave, while electromagnetic waves are transverse waves.
Step-by-step explanation:
The type of tones that are continuous in audible tones are C) Steady tones. These tones maintain a consistent amplitude and frequency over time, unlike pulsating, interrupted, or oscillating tones, which have variations in amplitude and/or frequency.
Regarding the loudness of sound, it is described by the b. intensity level or decibel. Loudness is not related to frequency, timbre, or pitch, but rather to how powerful or intense a sound wave is, which is measured in decibels (dB).
A tuning fork creates a b. Periodic wave. This type of wave repeats at a constant frequency, which is why tuning forks are useful for tuning musical instruments. The sound is produced due to vibrations that create compressions and rarefactions in the air, making it audible to our ears.
When it comes to electromagnetic waves, they are categorized as b. Transverse waves. These waves have oscillations perpendicular to the direction of the wave's advance, which is different from sound waves that are longitudinal.
In the context of a tuning fork, a violin string, and a loudspeaker all producing sounds, they are doing so because they are in a state of A) amplitude and B) frequency oscillations. The vibration or movement back and forth at a particular frequency generates the sound waves we hear.