1) Characteristics of rust? a) Brown b) Red c) Shiny d) Brittle 2) What cause metal objects can rusting? a) Air and heat b) Water and air c) Water and heat d) Cold and heat 3) Ways to prevent rusting? a) Painting the objects b) Coating the objects with paper c) Applying the objects with cream d) Blow air every day 4) What objects can be rust? a) Phone b) Car c) Book d) Gold chain 5) Importance of preventing rusting? a) Not safe to be used b) Damaged very easily c) Look pleasant d) Soft

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