Exploring Materials

A piece of material is flexible if it can ____________.

• break easily

• be torn easily

• be bent easily

• absorb water

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

What material is strong, does not allow light to pass through, is waterproof, and sinks in water?

• fabric

• wood

• metal

• glass

The material suitable for making this object must

• be see-through

• be stiff

• be flexible

• weak

Look at the picture. What property of material does the coin's material have?

• It is see-through.

• It is flexible.

• It sinks in water.

• It can support heavy objects without breaking.

Based on the flowchart, which material is most suitable for making a towel?

• A

• B

• C

• D

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

Miss Ivy 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

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

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