G 3 SCI CH# 5 and 7 ELECTRICITY AND ROCK AND SOIL

Glass is made from ----------.

• clay

• sand

Rocks have different ---------- and texture.

• colour

• style

A --------- band is an electrical insulator.

• metal

• rubber

There are ---------- metal wires in the bulb.

• one

• two

---------- lead is made up of a material called graphite.

• pen

• pencil

Graphite is a non- metal but it conducts ------------------ .

• electricity

• insulators

---------- are made up of mixture of mineral grains.

• soil

• rocks

Different types of rocks have different -----------

• uses

• making

Ceramics are made from -----------

• sand

• clay

We should use electricity very ----------------

• immediately

• carefully