Science Year 5 : Rusting (REVISION)

Objects that rust made of_________。

• aluminium

• iron

• gold

• plastic

A layer of reddish brown on surface of a metal is called______.

• red paint

• red dirt

• rust

• brown rust

Which of the following can rust?

• 
• 
• 
• 

What are the factors that causes rusting?

• presence of water and oil

• presence of water and tomato sauce

• presence of boiled water

• presence of water and oxygen

Table shows the results of an investigation

by a group of Year 5 Zircon pupils.

What is the conclusion that can be made

from the results of this investigation?

• Rusty objects are brownish colour.

• Non-rusty objects are made of iron.

• Rusty objects are made of plants.

• Rusty objects are made of iron.

Which nails will rust after one week?

• a

• b

• c

• d

How do you prevent bicycle chain from rusting?

• apply oil or grease

• plating iron with a layer of non rusty metals

• painting

• coating with plastic

How do you prevent this food can from rusting?

• painting

• coating with plastic

• apply oil or grease

• plating with non rusty metal

Which of the following on the importance of rusting is true?

• Generates economy

• Prevents skin diseases

• Ensures that objects are durable and not easily damaged

• Ensures that objects are constantly replaced with new objects

What is the benefits of avoiding rust?

• last longer

• object will be more attractive

• safe to be used

• can cause disease