Sounds are caused by *******. The ***** something vibrates, the ***** the pitch is. The louder the sound is the *****, it ******.

What is opaque? Examples

Light is a form of energy. Natural/ Artificial Light producer/ Light reflector 1. Sun 2. Moon 3. Lightening 4. Flashlight 5. water 6. candle 7 Sunglass

There are three tiny little bonew in your middle ear. These bones, the *****, *****, ****, make the vibrations larger and send these vibrations to the *******.

Sound travels in ******, which can be ******* or *********.

A clean, white shirt appears white because it ********* all the spectral colours of the rainbow.

A black cat is black because it ********** all the coulours that make up light.

The human ear is a complex organ designed to detect *********, thus giving us information about our environment.

What is translucent? Examples

The grass looks green becaseu it ****** all coulours except green.

When sound waves reflect or absorb?

What is transparent? Examples

What is the properties of light? Properties are the special things that an object has.