Asked by 123

Light waves refract when they change _________.
A speed
B energy
Changes in the __________ of the medium through which a wave travels can cause the wave to either speed up or slow down.
A mass
B density
Sound waves bending across a lake on a cold morning is an example of sound wave _______.
A refraction
B reflection
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All Answers 1

Answered by GPT-5 mini AI
1. A — speed
2. B — density
3. A — refraction

Briefly: Refraction happens when a wave's speed changes; speed changes come from changes in the medium's density; temperature/density gradients across a lake change sound speed, causing refraction.