Question

10 matching 3 points match the right definition with the right word. hearing range medium speed of sound interference frequency echo when sound waves come in contact with each other doppler effect amplitude for humans 20 hz to 20,000 hz other species can be higher or lower the type of matter that sound can travel through decibels number of waves that pass a point in 1 second sound waves hit a hard flat surface and reflects back

Explanation:

• hearing range: The description "for humans 20 Hz to 20,000 Hz other species can be higher or lower" matches as hearing range refers to the frequency range a species can hear.
• medium: "the type of matter that sound can travel through" is the definition of medium, as sound needs a medium (solid, liquid, gas) to propagate.
• interference: "when sound waves come in contact with each other" is interference, where waves interact.
• frequency: "number of waves that pass a point in 1 second" is frequency, measured in Hz (hertz).
• echo: "sound waves hit a hard flat surface and reflects back" is an echo, the reflection of sound.
• The remaining terms: "doppler effect" relates to change in frequency due to motion, "amplitude" is the height of the wave (loudness), "decibels" measure sound intensity, and "speed of sound" is how fast sound travels (not matched here yet, but based on the given definitions, we match the ones above).

Answer:

• hearing range : for humans 20 Hz to 20,000 Hz other species can be higher or lower
• medium : the type of matter that sound can travel through
• interference : when sound waves come in contact with each other
• frequency : number of waves that pass a point in 1 second
• echo : sound waves hit a hard flat surface and reflects back