How long it takes things to rot

How long it takes things to rot!

Title: Decomposition

Aim: To learn about the rate that different materials decompose.

Hypothesis: I think that bread will decompose the quickest because if you leave it there for too long of a time it will go stale then bad.

Materials:

1.  test tubes x4
2.  test tube rack x1
3. banana x1
4. bread x1
5. paper x1
6.  white styrophone x1
7. water
8. test tube bung.

Steps:

1. Collect the test tube rack.
2. Collect the test tubes.
3. Add the bread, paper, banana, and white styrophone all into there separate test tubes.
4. Add water to the test tube with bread in it.
5. put the test tube bungs on all the test tubes.

Findings: 

TODAY	Colour	Change	Observations
Banana	yellow	0	it looks like a banana
Paper	brown	0	it looks like paper
Styrophone cup	white	0	It looks like styrophone.
Bread	white	0	looks like bread

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3 weeks	Colour	Change	Observations
Banana	Yellow	White	the mold around it made the banana change colour into a white colour.
Paper	Brown	Brown	It has not changed for 3 weeks ago.
Styrophone cup	White	White	It has not changed for 3 weeks ago.
Bread	white	Brown	It got moldy and changed colour because of the mold it turned brown.

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5 weeks	Colour	Change	Observations
Banana	Yellow
Paper	Brown
Styrophone cup	White
Bread	White

  

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Images:

Conclusion:

Science (Wind Power)

Science (Wind Power)

Extreme weather

Measuring weather.

Definitions:

1. Anemometer:
2. Beaufort wind scale:

MATERIALS 

1. PLASTIC LID X4
2. TAPE
3. PENCIL
4. PIN
5. SKEWERS X2 

STEPS

1. Get all the materials you need.
2. Tape plastic lids to the skewers. (two on each skewer.)  
3.   Tape the two skewers together.
4.   Pin the skewers to the pencil.
5.   Test to make sure it spins.
6.  Go to winding spaces to see the wind speed.

Group Investigation.

Groups size: 5 
Roles:

• Timekeeper ( watch)

• Counter

• Recorder ( Chromebook or refill )

• Anemometer Manager ( Anemometer)

• Wind Manager

Instructions:

• Go to the measuring place and set up your wind gauge.
• Make sure everyone in your group is ready to start their roles.
• Record how many times it spins and record it in the table below.
• Count the number of spins in 15 seconds.
• Record it on your chart.

FINDINGS

	Place name on school grounds	Number of Spins in 15 seconds
1.	Field	0.5
2.	Old J Block site	1
3.	Grass hill in the quad	1
4.	Tennis Court gate	0

CONCLUSION:

There was much wind where we went today so the number of spins would be a low amount.

The places that had the most wind were the grass hill in the quad and the old J block site.

The field was the second most windest place in the school because it spun half the way around.

The Tennis Court was not windy at all and it spun 0 times.

Wind

Beaufort Wind Scale

Beaufort Force	Wind Speed (KPH)	Spins	Indicators	Terms Used in NWS Forecasts
0	0-2	0	Calm; smoke rises vertically.	Calm
1	2-5	10	Shown by direction of wind smoke drift, but not by wind vanes.	Light
2	6-12	40	Wind felt on face, leaves rustle; ordinary vanes moved by wind.	Light
3	13-20	80	Leaves and small twigs in constant motion; wind extends light flag.	Gentle
4	21-29	130	Raises dust and loose paper; small branches are moved.	Moderate
5	30-39	190	Small trees in leaf begin to sway; crested wavelets form on inland waters.	Fresh
6	40-50	250	Large branches in motion; whistling heard in telephone wires; umbrellas used with difficulty.	Strong
7	51-61	320	Whole trees in motion; inconvenience felt walking against the wind.	Strong
8	62-74	390	Breaks twigs off trees; generally impedes progress.	Gale
9	75-87	470	Slight structural damage.	Gale
10	88-101	550	Seldom experienced inland; trees uprooted; considerable structural damage occurs.	Whole gale
11	102-116	640	Very rarely experienced inland; accompanied by widespread damage.	Whole gale
12	117 or more	730+	Very rarely experienced; accompanied by widespread damage.	Hurricane

Based on your findings what was the Wind Speed and the Beaufort Wind Force for each area.

	Spins per minute	Wind speed ( kph)	Beaufort Scale
Field	0.5	0-2	0
Old J Block site	1	0-2	0
Grass hill	1	0-2	0
Tennis Court Gate	0	0-2	0

The Boy who Harnessed the wind: 1:36

BYE!

WEDNESDAY, OCTOBER 16, 2019

Tieke Bird

Hi Guys!
Today In class we were given the task to research your Kahui bird.
My Kahui has the bird Tieke (Saddleback).
My research:

1. The Tieke bird is for the family of birds called Callaeidae.
2. The Tieke (saddleback) gets its name from its saddle on its back.
3. Its taxonomic family is also known as the wattlebirds.

This was really fun to research about and I would like to find out more about this bird in the future.

BYE!

My investigation on climate change

Acidification
Definition: When asid is pumped into an object the P.H leave rises, 

Deforestation
Definition: Cutting down trees and not replacing them.

What are trees used for? They get rid of CD and makes Oxigen

What does cutting down trees do to the climate? It rowens the water cycle


Icecap melt
Definition: Icecap melting

If all the ice melted what would happen? Sea levels would rise and fish would die

How does ice cap melt affect climate change?

To learn about the expected behaviour in a science laboratory.

Aim: To learn about the expected behaviour in a science laboratory.


Our R9 Class Treaty

1.    Quiet voices
2.    Sitting with appropriate people 
3.   Not fidgeting
4.   Not disrupting 
5.  Prospecting equipment 
6.   Making good choices

Safety in a laboratory.

teacher   shoes   practical  teacher laboratory   ask  sniff teacher  breakages 

1.   Follow the instructions given to you by the ____Teacher__ _.
2.   You must not enter the laboratory without your __Teacher______.
3.   Report all _______Braekages_____ to your teacher.
4.   You must never eat or drink in a _____Labotory_______ .
5.   ___Shoes____ must be worn at all times.
6.   If you spill something you should tell your ___teacher______ immediately.
7.  You should wash your hands after every ___practacle____ activity.
8. You should know what you are doing. If in doubt ___ask___ your teacher.
9. Never taste or ___drink___ chemicals.

In your group discuss how the following scenarios could be dangerous.

1. Not putting your bag under your desk.
2. Running around in the laboratory.
3. Not wearing shoes in a laboratory.
4. Shaking a test tube with your thumb over its mouth?

How do we work in this laboratory?

1. Beginning and End of class: Lining up, Entry, Seating, 
2. Equipment tray: equipment list and details.

• Test tube
• Conical Flask
• Glass Stirring rod
• Test tube tongs
• Spatula
• Funnel
• Measuring Cylinder
• 
  

Test tube - Used for most experiments using liquids. they have a bung that goes on top

Conical Flank- Used for experiments with liquid up to 50 ml. the flank has a rubber bung for the top and the glass is heatproof ]

Glass stirring rod- a 20cm glass rod used to stir and mix any liquid together

Test tube tongs- these are used to hold a hot test tube after experiments

Spatula- for holding very small amounts of chemical powders

funnel

Measuring Cylinder- this is used to measure liquids for experiments. The liquid will be poured into a beaker or test tube once measured out

Con