Question

straw horn
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tape
the student wants to investigate how sound waves from the straw horn interact with different materials in a room. which wave property should be tested,
and which method should be used to test it?
wave property: pitch
method: playing the straw horn in a room with hard surfaces and a room with soft surfaces
wave property: absorption
method: making several sounds from straws of different lengths
wave property: absorption
method: playing the straw horn in a room with hard surfaces and a room with soft surfaces
wave property: pitch
method: making several sounds from straws of different lengths

Explanation:

To investigate how sound waves interact with different materials, we focus on absorption (how materials absorb sound). Testing in rooms with hard (reflective, less absorption) and soft (more absorption) surfaces allows comparing absorption. Pitch relates to straw length (not material interaction), and using different - length straws tests pitch, not material interaction. So the correct pair is absorption with testing in rooms of different surface types.

Answer:

Wave property: absorption; Method: playing the straw horn in a room with hard surfaces and a room with soft surfaces