Materials

Which letter best represents a glass marble?

• A

• B

• C

• D

Which of the following correctly shows the materials used to make the parts labelled A, B and C?

• A: rubber

  B: glass

  C: metal

• A: metal

  B: plastic

  C: rubber

• A: plastic

  B: metal

  C: rubber

• A: rubber

  B: plastic

  C: glass

Iron is usually used to make nail because it is _________________.

• shiny

• a good conductor of heat

• strong

• can conduct electricity.

The material used to make part X of a light bulb must be _____________________.

• light

• flexible

• allow light to pass through

• absorbent

The diagram shows the greatest mass four different strings can support before it breaks.

Which string(s) can support a 6kg load without breaking? (You can choose more than one answer)

• A

• B

• C

• D

Based on the above experiment and results, which statement is correct?

• Material C is the weakest material.

• Material D is the strongest material.

• Material C is weaker than Material B.

• Material A is stronger than Material B.

Which of the properties best describe part X of the rabbit cage? (You can choose more than one answer)

• flexible

• waterproof

• strong

• transparent

Which letter best represents a mirror?

• A

• B

• C

• D

Which student(s) has / have made a correct statement? (You can choose more than one answer)

• Li Ling

• Sarah

• Ali

• Peter

Which property is most suitable to make part K and L of an umbrella?

• K: flexible

  L: waterproof

• K; strong

  L: waterproof

• K: waterproof

  L: absorbent

• K: flexible

  L: strong