Wednesday, 9 November 2016

Rust task

Walt: Synthesise information from multiple sources.
Task
Work on this Doc together with a partner. My partner was Seini.

What 3 ingredients are needed for rust to occur.
Metal
Oxygen from the air (O)
Water (H2O)


Write a brief paragraph explaining the rusting process (why rusting occurs)
When metal is near water and oxygen, it forms rust. Rusting occurs when H2O (water) and O (oxygen) is in contact with iron or steel. The rusting process becomes faster when salty water or acid rain is applied.  
                                                                                                        
How could you prevent something from rusting?
By preventing metal from rusting you can paint it or put a layer of oil or grease over the metal. It is a good idea to use this as a solution so that the oxygen could bounce off the metal instead of rusting it, depending on what kind of environment  the metal is in.


Write 3 sentences explaining something new you’ve learned from this reading.
We learnt that the term corrosion is used to describe metal breaking down when it is exposed to the environment. We also learnt that rusting can be prevented when you either paint, grease/oil or a process called galvanizing. An example of galvanizing is when you put zinc and iron together, the zinc protects the iron but it sacrifices itself because zinc reacts more than the iron.




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