Technology and Digitalisation 2º ESO - Project Star Editorial Donostiarra

Examples of the mechanical properties of materials include:

• Hardness, brightness, texture and toxicity

• Heat conductivity, toughness and resistance

• Hardness, brightness, toughness and plasticity

• Brittleness, toughness, plasticity and ductility

The main wood products are:

• Plywood, chipboard, cork, paper and cardboard

• Plywood, chipboard, softwoods and hardwoods

• Plywood and chipboard (paper and cardboard are different types of material)

• Hardwoods and softwoods

Wood is...

• A tough material and a good insulator of heat and sound.

• A tough and porous material and a good sound conductor.

• A tough, plastic, and brittle material.

• A tough, porous, and cold material.

Natural materials...

• Are obtained directly from nature.

• Are obtained by preparing or refining raw materials.

• Are obtained from technological materials.

• Are obtained from other processed materials.

Metallic materials are generally...

• Soft, malleable and ductile.

• Hard, liquid and malleable.

• Hard, ductile, and good insulators of heat.

• Hard, malleable, and good conductors of heat.

Ferrous metals are formed from:

• Carbon and other metals

• Carbon and iron

• Carbon and alloys

• Iron and copper

Indicate which of the following sentences is correct:

• Artificial woods are soft and light in colour.

• Cork is not at all related to wood; it is a thinner type of material.

• Wood derivatives are usually obtained from leftover wood.

• Plywood is a wood derivative obtained from wood chips and sawdust.

These are some examples of non-ferrous metals:

• Copper, gold, steel and tin

• Zinc, aluminium, nickel, and silver

• Cast iron, copper, tin and aluminium

• Copper, tin, aluminium and iron

Malleable materials...

• Expand with temperature.

• Can easily be shaped into threads.

• Can easily be flattened into sheets.

• Are good sound conductors.

Which of these metals is the lightest?

• Aluminium

• Copper

• Steel

• Wood

• Glass