JSS 1 Intermediate Science Flashcards: Types, Properties and Uses of Wood, Metals, Ceramics and Building Materials

Question 1

Which property describes how a wood surface feels: texture, density, lustre, or ductility?

Accepted Answer

texture

Question 2

Mahogany, afara, obeche, opepe, and masonia are examples of ____.

Accepted Answer

wood species

Question 3

A suitable wood for furniture should be selected mainly according to its ____.

Accepted Answer

properties and intended use

Question 4

The natural shine on a clean metal surface is called ____.

Accepted Answer

lustre

Question 5

The mass per unit volume of a material is its ____.

Accepted Answer

density

Question 6

The ability of a metal to be hammered into sheets is ____.

Accepted Answer

malleability

Question 7

The ability of a metal to be drawn into wire is ____.

Accepted Answer

ductility

Question 8

A ringing sound when struck can help identify some ____.

Accepted Answer

metals

Question 9

Which metal form is long, solid, and usually circular in cross-section: rod, pipe, sheet, or plate?

Accepted Answer

rod

Question 10

A metal pipe differs from a solid rod because the pipe is ____.

Accepted Answer

hollow

Question 11

A thin, flat piece of metal is called a ____.

Accepted Answer

sheet

Question 12

Ceramics are generally hard, heat-resistant, and ____.

Accepted Answer

brittle

Question 13

Which product is ceramic: a clay tile, a copper wire, a rubber hose, or a wooden beam?

Accepted Answer

a clay tile

Question 14

Glass is useful for windows mainly because it is ____.

Accepted Answer

transparent

Question 15

Cement is mixed with sand and water to make ____.

Accepted Answer

mortar

Question 16

Concrete is commonly made from cement, sand, gravel, and ____.

Accepted Answer

water

Question 17

Gravel in concrete mainly acts as ____.

Accepted Answer

coarse aggregate

Question 18

Steel bars are placed in reinforced concrete mainly to improve its ____.

Accepted Answer

tensile strength

Question 19

Which is NOT a suitable match of material and use: glass—electrical cable core, wood—roof frame, ceramic—floor tile, or metal—reinforcing bar?

Accepted Answer

glass—electrical cable core

Question 20

Why should building materials be selected for local weather conditions?

Accepted Answer

Weather affects their durability and performance.

Strong work.