MATERIALS

Question 1

Fibers

Answer 1

Threads in plants and animal materials

Question 2

Ceramics

Answer 2

Made of clay and sand

Question 3

Plastics

Answer 3

Made from oil and coal

Question 4

Brittle

Answer 4

Breaks easily

Question 5

Absorbent

Answer 5

Soaks up a liquid easily

Question 6

Raw material of glass

Answer 6

Sand is heated and melted

Question 7

Raw material of ceramics

Answer 7

Clay which is baked by heating

Question 8

Raw materials of leather

Answer 8

Animal skins that are tanned, crusted and finished

Question 9

A manufactured material made from plants

Answer 9

Paper

Cotton (material)

Question 10

Properties of glass

Answer 10

Brittle

Waterproof

Question 11

Properties of clay

Answer 11

Brittle when baked
Becomes hard when baked
Soft when not baked
Flexible when not baked

Question 12

Properties of wool

Answer 12

Flexible

Soft

Question 13

Meaning of ‘properties’

Answer 13

The special things about a material that makes it good for certain uses

Question 14

Malleable

Answer 14

Can be shaped easily

Question 15

Brittle

Answer 15

Easily breaks into pieces

Question 16

Dent

Answer 16

To make hollow on the surface

Question 17

Flexible

Answer 17

Material bends easily

Question 18

Stiff

Answer 18

Material doesn’t bend easily

Question 19

Waterproof

Answer 19

Does not allow water to pass through

Question 20

Absorbent

Answer 20

To soak up a liquid

Question 21

Example flexible objects

Answer 21

Ruler
Paper
String
Tissue

Question 22

Example stiff objects

Answer 22

Brick
Wood
Glass

Question 23

Is plastic stiff or flexible

Answer 23

Flexible

Question 24

Is a metal wire stiff or flexible?

Answer 24

Flexible

Question 25

How we test how hard or soft a material is?

Answer 25

See if we can scratch, cut or dent it E.g. scratch wax candle with fingernail but not a ceramic cup.

Question 26

What are raw materials

Answer 26

As they are found in nature Not changed in any way Obtained from living and non-living things

Question 27

What are manufactured materials

Answer 27

Materials that have been changed or processed from raw materials by people

Question 28

Example raw materials

Answer 28

``` Honey Cotton Chicken Wood Carrots Soil ```

Question 29

Example manufactured materials

Answer 29

``` Dress Table Oil Jacket Plastic Glass Jewellery Leather ```

Question 30

How paper is made (steps)

Answer 30

``` Chop trees Cut logs and remove bark Chip wood Cook chips until soft Move pulp over rollers Drain water Dye fibres Dry with hot rollers Cut paper ```

Question 31

The substance used to make paper when wood chips are cooked in water to soften the fibres

Answer 31

Pulp

Question 32

Plastic, paint and fabrics are all made from…

Answer 32

Coal and oil

Question 33

Fabric and leather are both made from…

Answer 33

Animal wool and hides

Question 34

Ceramics are made from…

Answer 34

Clay