Timber, Metals, Plastics

We get wood from _____.

• nature

• trees

• forrest

• hardware

Another name for wood used in construction is ______.

What is timber seasoning?

• logging of trees

• cutting planks

• drying planks

• grains in plank

Two types of wood are _____ and ____ wood.

Describe the kiln seasoning process

Answer explanation

Did you know kilns are also used in pottery? In timber seasoning, a kiln is essentially an oven that raises the temperature of the planks to remove moisture quicker than air drying them. The planks are stacked are the humidity and temperature are raised and the hot air is blown over the planks.

One advantage of seasoning wood is ____________.

• prevents dryness

• makes the planks heavier

• prevents decay

• prevents warping

Select two types of wood seasoning

• Air

• Kiln

• Wet

• Grain

When cutting and sanding wood which direction is best?

• along the grain

• across the grain

• against the grain

• with the grain

Two properties of copper that make them useful in Electrical are that they are ______ and __________.

Answer explanation

Copper is one of the most widely used conductors of electricity. It is ductile and can shaped into wires that we use to connect lights in our homes.

Select all the pure metals listed below

• Copper

• Aluminium

• Steel

• Cast Iron