Mini-Quiz: Waves and Obstacles

1. What do they call sound reflected off a distant wall?

   Sound cannot be reflectedSorry, not correct. Try another button. Wave motionGood try, but not right. Select another answer. An echoThat's correct. You are becoming a Champion.

2. What happens to the speed of light in glass?

   It becomes the speed of soundSorry, not correct. Try another button. It goes faster than in airOops! Wrong answer. Re-read the question and try again. It goes slower than in airCorrect answer. You are a genius!

3. What is diffraction?

   Wave bends around edgeThat's correct. You are becoming a Champion. Wave travels like a rayGood try, but not right. Select another answer. Wave is refractedOops! Wrong answer. Re-read the question and try again.

Pick an answer to see instant feedback. Re-read the lesson if you miss one.