Why did the boy covered his ears ?

Sounds can be produced when an object vibrates then cause air particles to move and create sound waves.

Which color is reflected by the leaf?

The bending of light as it passes from one material to another is called __________________________

Light .................travel through space.

High frequency sounds are high-pitched sounds.

___________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 back and forth movement of motion is called

Sound energy and sound waves can travel through space (vacuum).

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.