What is clay?

• A type of wood

• A type of plastic

• A type of metal

• A type of fine-grained natural soil material containing clay minerals

What is the color of most pure clay minerals?

• White or light-colored

• Blue

• Red or brownish

• Black

What did prehistoric humans use clay for?

• Making pottery

• Cooking food

• Creating tools

• Building houses

What is the use of clay in modern industrial processes?

• Making clothes

• Paper making, cement production, and chemical filtering

• Creating electronics

• Producing food

What is the main use of clay in buildings?

• As a decorative element

• As a load-bearing structure

• As a roofing material

• As a flooring material

What is the main use of brick in construction?

• As a flooring material

• As a decorative element

• As a load-bearing structure

• As a roofing material

What are the required properties of good bricks used in construction?

• Uniform and bright color, rough texture

• Soft texture, low strength

• Plane faces, sharp and true right angled corners

• Rough texture, high water absorption

What is the purpose of burning the dried bricks?

• To make them colorful

• To make them soft

• To make them brittle

• To make them hard and strong

What is the use of brick pavers in construction?

• Creating arches

• Creating pavements and walkways

• Building walls

• Making furniture

What is the use of facing bricks in construction?

• Creating arches

• Building walls

• Creating pavements and walkways

• Making furniture