Sound I
How sounds are made.
What is objects vibrating.
Sound waves move ___________ (towards, away from) the source of the vibrations.
What is away from.
A series of compressions and rarefactions moving through a medium once it reaches the ear.
What is sound.
Sound travels fastest through a __________(gas, liquid, solid).
What is solid.
Number of wavelengths that pass each second.
What is frequency.
The higher the frequency of a soundwave, the higher the _________________________.
What is pitch.
Sound is a form of _____________________.
What is mechanical energy?
The spreading out of a compression wave.
What is rarefaction.
How a sound wave moves when it hits flat, firm surfaces, much of it is _______.
What is reflected.
Sound is measured in ______________.
What is decibels?
The larger the object is the _______________ the pitch.
What is lower.
The name of the wave that contains compressions and rarefactions.
What is longitudinal.
Sound would travel most quickly through which object: air, wood, outer space or water.
What is wood
Animals use sound to find objects and judge distances.
What is echolocation?
A system that works under water by sending sound waves to map out the ocean floor.
What is sonar.
The tightness of an object that affects its vibrations.
What is tension
When sound hits soft, thick, or uneven materials, much of the sound is ___________.
What is muffled or absorbed?