material blurs light as it passes through.

What is produced when a sound wave is reflected?

Sound travels fastest through...............

This is ................

It is the loudness or softness of sound.

The unit used for sound is _____.

Animals and people are ______________ because they completely block light.

The bottle with ____ water will produce the lowest pitch.

The baby is so joyful seeing his own ______ in the mirror.

These are the visible colors of light energy that humans can see.

Which item can we shine a flash light on and create a rainbow?

What phenomenon occurs when light passes through a prism?

Which of the following colors of light has the shortest wavelength?

What is the speed of sound in air at room temperature?