Which is a natural source of light?

Which of these is not a source of light?

Which of the following objects reflect light?

How is a shadow created?

What does "transparent" mean?

What does dark mean?

Light travels in ________________ lines.

We can see an object because the ____________ enters our eyes.

Tissue paper is _____________ which will let some light pass through it.

Wood and cardboard are _____________ objects, which light cannot travel through.

When an object blocks out the light, a ________________ is formed.

Shadows are ______________ at midday.

Shadows are ____________ at the end of the day.

An example of an opaque object is

A translucent object is

A transparent object is