Chapter 4 – Sorting Materials into Groups

materials can be used for made up more than one things,

How do we choose a material to make an object ?

Newspaper, note book, books and calendars etc. are made by:

Iron, aluminium and gold have appearance.

Metals which have a lustre are called:

Wood and stone is materials.

We see lustre on the freshly cut of the wire.

A substance dissolve in water is:

How does aquatic animals survive in water ?

An object that floats in water is:

An object that sinks in water:

A liquid that mixes well in water is:

A liquid that does not mixes well in water is:

The substance which dissolve in water are called:

The substance which do not dissolve in water are called:

Some materials have special shine on them is:

Materials which are dificult to press are called:

Materials which can be pressed easily are:

Those liquids which mix well with water, are said to be:

The yarn is wound on big reels which are called:

Those liquids which do not mix well with water, are said to be in water.

Those substances or materials across which things can be seen are called:

The materials across which we are not able to see, are called:

The materials across which things are only partially visible, are called:

Those substances which allow the transfer of heat through them are called:

Substances which do not allow heat to pass through them are called:

All objects have different:

An object that is round in shape:

Write an object that is made of plastic: