Maths

 In maths, we have been doing a little bit of everything like algebra. Algebra I combining letters with numbers. the letters are being substituted for numbers.

Speeding past School, SCI Test

 In science, we have been learning about how to calculate the speed from distance/time

We used this to investigate the speed of cars on Carman road.

We did this by timing the cars from one pole to another, this distance was 50m. We timed 10 cars. 

To figure out the speed, we divided the distance by the time the car took to cover the distance. Out of the 10 cars, 3 were speeding- as they were going faster than the speed limit of 50kmh. The fastest car was going 51.4kmh. The slowest car was driving 18.83kmh. 

What colour the lights were affects how fast the cars are going. This is why they were either close to or over the speed limit or going slow. 

I could have improved my experiment by taking more times, or to have a more confined area to see when to start/stop the timer. 

Science

Science 

this week we have been working on an electrical circuit.  We have been using the website Phet.

What is a circuit?

A circuit is a series of elections going around picking up volts from the battery to generate power.

What is the difference between a parallel circuit and a series circuit?

A parallel share the same amount of volt and a series circuit has hold of what was originally generated

Maths

This week in maths we have been learning about Money. The main thing we have been learning about is  how to use your money and figure out the change and how much you have left.

Today in Business studies we had to build towers and out of the whole class, we had a challenge on who could build the biggest. We had a piece of paper and 1 meter of cellatap.

Copper coin experiment

Copper Coin experiment. 

- Clean coin in salt+vinegar solution

- Put 50ml 2moIL NoaOH into a beaker

- Heat on bunsen burner until  Nearly boiling - Stir as heating then take off the heat.

- Add a spatula of zinc powder

- Heatlitly for three minutes, with the coin in - Stir as heating

- Take a coin out with tong

- Rinse under water to remove chunks of zinc

- Wave coin in the blue flame using tongs

The 2 color changes were silver and gold.

When we mixed the Zinc and the Sodium Hydroxide it caused the coin to go silver, Then we added heat and it went gold. They all combined together 

Drill gauge

this tear we have been working on a dill gage here is a slide show on how you make one. I hope you enjoy