Electricity in TV's

In science we are starting the topic of electricity and have been told to research an item that we used in the school holiday. I choose the TV!

Old TV: A beam of electrons is generated on a filament heated by electricity. A positively charged glass screen attracts the electrons. The screen is coated with chemicals (phosphors) that light up when an electron hits it. Sweeping the beam of electrons over the entire screen (with directing magnets) really quickly lights up the whole screen.

New TV: No beam of electrons, no magnets. Each tiny spot of light that makes up the picture is an actual little solid state light bulb. Rows and columns of these tiny LED’s are scanned one after another. This makes a more efficient TV.

Metal Gases

In science we put metals in acids and bases to see the gases they produced with the help of fire.

The first gas tested for was hydrogen doing the pop test, a burning splint inserted into a test tube full of hydrogen to produce a pop sound. By adding a strip of magnesium to a test tube containing acid and holding a bigger boiling tube over top you can collect hydrogen to pop. But note the chemical reaction in the test tube will heat up.

The second was oxygen, adding magnesium dioxide to hydrogen peroxide, a base, created oxygen. The oxygen was tested for by placing a recently blown out splint in the test tube to see if it would relight.

And finally third was carbon dioxide in what i like to call the smother test. Adding together acid and a metal carbonate will produce carbon dioxide, which can be tested by inserting a burning splint. If the splint goes out you have carbon dioxide, it smothers flames and is used in fire extinguishers.

Myanmar Refugees

For social studies we have been doing inquiries about refugees from different countries, I chose to do mine on myanmar. Here it is:

And a few required questions:

What went well and why?
When I knew what I was looking for I could get things done.

What didn’t go so well and why?
I struggled to find stuff without asking the teacher for elaboration on the topic.

If you were to do this again what would you do differently and why?

I would choose the option I already know something about.

Magic With Acid

In science we did a couple of cool experiments relating to acids and bases, crystals, deadly rain, you know the fun stuff.
We first did the making of copper sulfate crystals by dissolving copper oxide in hot sulfuric acid, pouring the mixture through filter paper into a beaker, and then putting it in a evaporating basin above a beaker containing boiling water to let it evaporate a bit. The next day we came back and some crystals had grown:

The dark blue things are the crystals.
Then afterwards we looked at the formation of acidic water from the burning of nasty fuels, fuels which have harmful fumes that float into the sky. When the fumes get high enough they will follow the condensation and precipitation steps of the water cycle. The rains acid increases the amount of acid in the rivers and oceans and with a high number of hydrogen ions from it dissolving steal away nutrients and break down pieces of the ocean. It must be a shame to know that all this happened because of humans like you and me conveniencing ourselves.

Film Aspect Paragraph

For english we are looking at film study and had to write S.E.X.X.Y paragraphs, Statement, Evidence, Explanation of directors purpose, Explanation of effect, Your link, about the lighting in this scene of 'The Power Of One'. So here is an image of it and the paragraph:

The lighting is used effectively to create a dark and foreboding atmosphere. The light coming from behind makes the location seem like a back street alley, while the wall would hide them from the view of the singing tribes. It would make suspense and puts them in a secluded area where other guards can’t see to stop them. It causes worry and fear, it makes viewers wonder what lengths the guard will go to. You can contrast this to the earlier scene with the guard where if they had gotten into a fight there would be other guards to stop them.

Pretty Chemicals

T'was a splendiferous couple of experiments we did in science:

Experiment one, the creation of indicators, we used different things to make indicators of whether a liquid was an acid or a base. We used beetroot, cranberry juice and alcohol turmeric. T'was a smashing success, here are the results:
Beetroot, Acid: crimson, Base: yellow-orange.
Cranberry juice, Acid: pink, Base: green.
Turmeric, Acid: yellow-yellow-orange, Base: orange.

Experiment two, the indicator rainbow (I have PICTURES!!!), we used different amounts of bases and acids to make a range of colours. Blue for base, red for acid, green for neutral. Here are the pictures:

Te Tiriti O Waitangi Signings map

I social studies we made a map about where the Treaty of Waitangi was signed, here is mine:

The locations are:
Kaitaia, Okaihau, Hokianga Harbour, Bay of Islands, Paihia, Russell, Tamaki (Auckland), Takapuna, Te Kaha, Opotiki, Whakatane, Tauranga, Ruatoria, Tokomaru Bay, Te Karaka, Poverty Bay, Waikato River Heads, Kawhia, Porirua, Kapiti Island, Otaki, Wanganui, Picton, Akaroa, Otago Peninsular and Ruapuke Island.

In that order.