Question

when a sound wave reaches a material boundary, different results are possible.
identify each result described in the table.
result description
the wave crosses the boundary and travels through the material
energy is taken in by the material and converted to another form
bounces back after reaching the boundary
reflection
transmission
absorption

Explanation:

To solve this, we match the descriptions to the terms:

1. For "the wave crosses the boundary and travels through the material" – this is transmission (waves pass through a medium).
2. For "energy is taken in by the material and converted to another form" – this is absorption (energy is absorbed, e.g., as heat).
3. For "bounces back after reaching the boundary" – this is reflection (waves bounce off a surface, like an echo).

Matching:

• "the wave crosses the boundary and travels through the material" → transmission
• "energy is taken in by the material and converted to another form" → absorption
• "bounces back after reaching the boundary" → reflection

(If you need to fill a table, here's the structured version:

Description	Result
energy is taken in by the material and converted to another form	absorption
bounces back after reaching the boundary	reflection	)

Answer:

To solve this, we match the descriptions to the terms:

1. For "the wave crosses the boundary and travels through the material" – this is transmission (waves pass through a medium).
2. For "energy is taken in by the material and converted to another form" – this is absorption (energy is absorbed, e.g., as heat).
3. For "bounces back after reaching the boundary" – this is reflection (waves bounce off a surface, like an echo).

Matching:

• "the wave crosses the boundary and travels through the material" → transmission
• "energy is taken in by the material and converted to another form" → absorption
• "bounces back after reaching the boundary" → reflection

(If you need to fill a table, here's the structured version:

Description	Result
energy is taken in by the material and converted to another form	absorption
bounces back after reaching the boundary	reflection	)