Throw The Egg From Up High

Today in science we had been tasked to remove the fall damage from an egg by means of insulating it. We surrounded it with foam and soft stuff, wrapped it in bubble wrap, and stabbed with skewers to make legs. Then we added a parachute, all in all the egg lived. Now the complicated bit (ask your father) the egg had a weight of 400N while the egg and lander weighed 1053N using the method of F=ma (force = mass x acceleration).

Career Study

For social studies we have been looking at careers and how tech has changed over time. With all that happened with ******* lot's of job losses have happened so we are learning to get one.

Money Math

For math we have been learning about money and percentages around increasing and decreasing wages, prices or salaries. It is like 50% off sales but a bit more complicated because maths likes to do that. You can increase a price by a certain percentage by typing: 1.percentage x price. You can decrease a price by typing: 0.percentage x price = ans _ 100 - ans. The end.

Golden Coins

In science I was given permission to conduct an experiment of my own accord based off an experiment we did in class around giving a 10c piece a gold coating.

Aim: To test which New Zealand unused and modern coin contain copper.

Equipment: Beaker, Bunsen burner, Tripod, Heatmat, Cold tap, Sodium hydroxide, Zinc powder, NZ coins, Gauze mat.

Method:
1. Heat coins in sodium hydroxide until steaming, then turn off bunsen burner.

2. Add zinc powder and stir for a while until water starts clearing and the coins should be silver, clean coins.

3. Hold coins in fire, desired result is a gold sheen, cool in water.

Results:

New Zealand 1c - yes
New Zealand 2c - yes
New Zealand 50c - yes
New Zealand 5c - yes
New Zealand 10c - yes

New Zealand old 10c - no

New Zealand 20c - no
New Zealand half penny - not really
American 1c (bc I had one) - yes
Air Force Museum flat pressed 10c - yes

Observations:

There is a golden colored alloy called brass, brass consists of zinc and copper. The coins with copper in them would combine with the zinc powder to cause the coins to be coated in brass.

Children Of Blood And Bone Novel Study

For english we are doing a novel study on "Children Of Blood And Bone" by Tomi Adeyemi and after reading certain chapters we are to write our thoughts on a quote from the book.

Do note this is subject to change as we read more of the book.

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.