Exploring Materials (1)

Which of the following are properties of glass that make it suitable for making aquariums?

(A) It is strong.

(B) It is flexible.

(C) It does not absorb water.

(D) It allows light to pass through.

• A and B

• A and D

• B and C

• C and D

When choosing a material to make an object, which of the following factor(s) must we consider?

(A) Uses of the object

(B) Properties of the material

(C) Availability of the material

• A only

• B only

• B and C

• A, B and C

A cup can be made of a variety of materials. Which one of the materials below must be coated with a waterproof material before it is used to make a cup?

• paper

• metal

• plastic

• ceramic

Read the riddle below.

This material is light and flexible. It can be used again. It is waterproof. It produces harmful gases if it is burnt.

Which material matches the given description?

• cloth

• metal

• glass

• plastic

Jack built his house using bricks.

Which of the following is the best reason for using bricks?

• Bricks can sink.

• Bricks are light.

• Bricks are strong.

• Bricks can be bent easily.

Which of the following materials come from plants?

(A) iron

(B) wool

(C) wood

(D) cotton

• A and B only

• B and C only

• C and D only

• A, B, C only

Mr Lee works in a nursery which sells flower pots. He notices that most of the customers prefer to buy plastic pots instead of clay pots. Why did they prefer the plastic pots to the clay pots?

(A) They are lighter

(B) They are opaque.

(C) They are stronger.

(D) They are able to float

Note: "opaque" means it does not allow light to pass through

• A only

• B and C only

• B and D only

• A, B and C only

Naterlyn made the following statement about her fishing rod.

"My fishing rod is good enough to pull a big fish out of the water without breaking"

Which physical property of the fishing rod did she describe?

• length

• flexibility

• elasticity

• strength