Today’s History Lesson: Vietnam Immigration Reflection

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In today’s history lesson, we looked at three main periods of immigration to Australia.

Here is a link to lee’sclassroom:

http://leesclassroom.global2.vic.edu.au/2015/03/18/todays-history-lesson-links/

3 Facts: 

When the Vietnam war ended lots of people immigrated to start a new life. Many families travelled to Australia in small wooden boats, sharing the space with each other. Australia had been allowing immigrants to enter and live in their country since 1947.

2 Understandings:

I understand why people wanted to start a new life, because their own country was in ruins and they might’ve chose Australia because at the time, it was a new country…a fresh start for everyone.

1 Question:

What caused the Vietnam War?


Different Types of Government

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In the past few weeks, our class has been learning about Australian government. Yesterday our class read a text about the different types of government. Here they are:

An Anarchy is a type of government. When there is an Anarchy there is no government and no rules, everybody does their own thing.

Communism is when the government controls the economy and owns all the businesses and farms. In it’s ideal form all the labour and the food should be evenly shared between the community.


Conduct an experiment: How can we prevent rusting? part 2

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Today we kicked off the morning by conducting our anti-rusting science experiments. Everyone used different materials to place in the salt water. My partner and I used steel wool. The independent variable ( the condition that is changed by the scientist ) was what we wrapped around it.One piece of steel wool was wrapped in plastic, one was painted and the last one was left unchanged so we could compare it to the others.

We wrote down predictions on our P.O.E chart ( Predict, Observe, Explain) and now we have to wait until Monday to write down our observations and explainations.

I predict that the piece of steel wool that is wrapped in plastic won’t rust because it has something covering it all around. I think that the steel wool that is painted will rust a little bit and I also think that the paint might wash off, meaning that it will DEFINITLEY rust.

If you want to know more, click here to see my first post on this experiment.


Conduct an experiment: How can we prevent rusting?

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Questions on our topic:

Why don’t some metals rust?

Some metals like aluminium have a thin layer known as aluminum oxide. It forms on the metals outer surface and acts like a rust-preventing shield.

Why does it take some things longer to rust than others?

Because it would depend on what the object is added into.

Why do materials rust?

Metals rust because in some way, they are exposed to air and water for a certain period of time.

What does rust look like?

Rust is a iron oxide that looks brownish-orange in colour. It is brittle, soft, weak and flaky.

How can rust be prevented?

There are many ways to prevent rust from forming. One way to stop it is to paint over the object that is able to rust. This helps because it acts as a shield and stops the oxygen from affecting the metal. Plastic also helps to keep the oxygen away from the material.

How does Rust work?

Iron and steel rust when they come into contact with water and oxygen. Both water and oxygen are needed for rusting to occur. But aluminium does not because of the thin layer of aluminium oxide that protects it.

 Does every type of iron rust?

All irons rust when they come in contact with oxygen. Both air and water are needed for the rusting of iron.

Are there different types of rust?

Yes, there are different kinds of rust. There are 2 types of rust. The first on is FeO and the next one is Fe2O3. The second one, Fe2O3 has two different crystal structures: trigonal (hematite) and cubic (magnetite).

Experiment:

Aim: To find the best way to prevent rust.

Materials:

  • Steel wool (x3) One already painted 
  • Plastic
  • Water-based paint
  • Salt water
  • Beaker x3 

Method:

  1. Measure out 150mL of salt water in each beaker.
  2. Wrap plastic around one piece of steel wool tightly.
  3. Place each piece of steel wool in each beaker.
  4.  Wait until Monday.
  5.  Observe the results. Was our hypothesis (prediction) correct?

 Fair test table:

Chart 4 rusting project