The examples of light sources is below, except . . . .

We can see when light from light sources enter

our . . . .

The . . . is our main light source in the day.

There are some natural source of light, except . . . .

There are some man-made source of light, except . . . .

The earth’s surface is covered with . . . .

Below are examples of rocks, except . . . .

Soil is made up of tiny pieces of rocks, humus, air and . . . .

Humus is formed from rotting plants and . . . .

There are different type of soil, except . . . .

Different types of soil contain different amounts of

humus, clay, silt, and . . . .

Marble can be cut and polished easily. It used to make . . . .

wool, silk are natural materials that come from . . . .

The material we are found in nature is called . . . materials

Man-made materials are made by . . . .

Paper, plastics, ceramics and concrete are . . .materials.

Things can change their shape by squashing,

stretching, twisting and . . . .

When a solid is heated, it can melt and change into . . . .

When liquid is heated, it can boil and change into . . . .

The things can dissolve in water is . . . .

The things cannot dissolve in water are below, except . . . .

One day on earth is . . .hours.