Tech @ Tamaki Stem/Science

 Hey everyone, it's me Finau and welcome back to my blog. Today was sadly my last session with Mrs Sharma for Stem/Science. I have enjoyed all the cool experiments we've done. For our last session we learnt about the 3 states of matter. We watched a video of what matter is and then we had to find 10 images (on google) of solid,liquid,&gas. After that we played a game of kahoot. It was very fun and exciting. Our runner up was Aye & Mariko, our 3rd place was Angelica, 2nd was me (:)), and of 1st place winner was Sophie. I hope you have enjoyed this post. Please leave a positive comment on my blog. Bye!

Tech @ Tamaki Stem/Science

 Carefully read and understand this recording and planning guide so you are systematic in scientific thinking, experimenting, recording and interpreting. 

Follow logically through each section so you are thorough in your science investigation steps. 

Complete each section with details needed so you have carefully logged your project...and so an outsider can know and understand too.

1	My science investigation TOPIC:
2	My investigation question the effect of different types of physical activity in heart rate Which actions/activity resulted in the highest heart rate? Lowest heart rate? Running on the spot as fast as you can (highest) and sitting (lowest). Why do you think this might be? Sitting is where you relax and take a break and you don’t do anything but when you run you get very tired and your heart beats.  HYPOTHESIS  I think running as fast as possible on the spot is the highest heart rate. I think sitting is the lowest heart rate.
3	Background research and knowledge I will explore as a backdrop to my investigation High Blood Pressure: 120mmHg Low Blood Pressure: 80mmHg
4	Aim of my investigation
5	My investigation steps Materials / resources / people: STEP 1 We followed the instructions. STEP 2 We had to get a smart watch and and stopwatch. STEP 3 We did activities like jogging,running,throwing/catching,etc. STEP 4 After every activity we checked out blood pressure to see if it was high or low. STEP X We wrote it down in this google doc.
6	My possible recording method Data collection table:  Name of the Activity Length of Activity Beat counted in 30 seconds Heart Rate mmHg Sitting 30 seconds 98 (highest) 89 (lowest) 98mmHg Jogging on Spot 30 seconds 119 (highest) 119mmHg Throwing and Catching ball 30 seconds 107 (highest) 107mmHg Stretching 30 seconds 158 (highest)89 (lowest) 158mmHg Star Jumps 30 seconds 148(highest) 89(lowest) 148mmHg Running as fast as possible on spot 30 seconds 167 (highest) 89 (LOWEST) 167mmHg     Photos and Videos: Star jump https://drive.google.com/file/d/1GYqrsAuKBX92s2dC0zzceap3RPnXtSbW/view  Running on the spot
7	Result:  I was right, (hypothesis). I ran on the spot and my blood pressure was the highest 167 and sitting down was the lowest 98.

Hi everyone, it's me Finau and welcome back to my blog. Today at tech we did a science investigation. We did some activities and check our heart rate. It was very fun to do. I worked with Aye and Mrs Sharma was our teacher (yay,she came back). I hope you have enjoyed this post. Please leave a positive comment on my blog. Bye!

Tech @ Tamaki Stem/Science

Task 1: Understand what pH is.

pH = potential of hydrogen

What is pH? pH is how acid is measured.

How do you measure pH? The pH value can be measured using electrochemical measuring systems, litmus paper, or indicators and colorimeters.

What is the scale of pH measured on? pH is a measure of how acidic/basic water is. The range goes from 0 - 14.

What pH level does water have? Is water acid, basic, or neutral? Neutral

What is the most acidic pH level? It is 0

What is the most basic pH level? It is 8-14

0-6 is acidic

7 is neutral

8-14 is basic

0 battery

1 stomach acid

2 lemon juice

3 grape juice

4 tomato juice

5 soft drinks

6 saliva/urine

7 pure water

8 sea water

9 baking soda

10 great salt lake

11 ammonia solution

12 soapy water

13 bleach

14 drain cleaner

Atom = simplest form of matter

Atom = neutral

More hydrogen ions - acid

Bases = have hydroxide ions

When things go into water they dissolve and become acids and lose 1 electron.

Task 2: Doing experiment

Aim/Purpose: Test the pH levels in different household products.

Equipment: Well Plate, pH strips/litmus paper,pH chart table (0-14),Dropper

Products: Baking soda, distilled water, window cleaner,toilet bowl cleaner, lemon juice, milk, orange juice, apple juice, vinegar, detergent,tea/coffee

Substance	Acid/base, (prediction)	Colour changes from? (Litmus paper)	Result, (acid or base?)
Baking soda	Base (correct)	Blue to blue Red to blue	Base
Distilled water	Base (wrong, neutral)	Blue to blue Red to Red	Neutral
Window cleaner	Acid, (basic)	Blue to blue Red to blue, (slightly)	Basic
Toilet bowl cleaner	Acid, (correct)	Blue to red Red to red	Acid
Lemon juice	Acid, (correct)	Blue to red Red to red	Acid
Milk	Base, (neutral or acid)	Blue to blue Red to red	Mixture of neutral and/or acid
Orange juice	Acid (correct)	Red to red Blue to red	Acid
Apple juice	Acid, (correct)	Blue to red Red to red	Acid
Vinegar	Acid, (correct)	Red to red Blue to red	Acid
Detergent	Acid, (correct)	Blue to red Red to red	Acid
Tea/coffee	Base, (acid)	Red to red Blue to red	Acid

 Hey everyone, it's me Finau and welcome back to my blog. We went to tech and went to science class. We were learning about pH. I already knew some things about pH but I learnt more. Our teacher was not Mrs Sharma, it was Mrs Smallwood. I worked with Aye. I enjoyed the lesson and learnt some things about acids. I hope you have enjoyed this post. Please leave a positive comment on my blog. Bye! 

Tech @ Tamaki Stem/Science

Task 1: Osmosis

Photosynthesis is a process in which plants make their own food.

Parts of a Plant:
Flower
Stem
Leaf
Roots

Plants produce food like sugar and oxygen but they only give us oxygen not sugar.

Leaf is where the photosynthesis takes place.

Stomata of tiny pores on the back of leaves and takes on carbon dioxide.

Xylem helps the water move up the plant and Phloem helps food move in different parts of the plant.

Transpiration

Evaporation of water in plants.

Task2: Experiment: Celery and Food Coloring Experiment

Ingredients:
Celery

Water
Food colouring
Beaker

Scissors

Purpose: To see water move from roots to the leaves through Xylem.

Method (steps/instructions):
Fill up the beaker with water and add food coloring.
Get celery and cut the roots.

Put the celery in the water and stir it around.
Get a plastic bag and a twist tie and tie the twist tie around the celery but only at the top where the leaves are.
Once you have done it do not spin it too much or else you will not see the water movement. This will take some time.

Xylem:

Hello everyone, it's me Finau and welcome back to my blog. Today we had science. We were learning about how water moves in a plant from the roots to the leaves. It was so fun because we did a experiment about it. I did this with Milz. I hope you have enjoyed this post. Please leave a positive comment on my blog. Bye!

 

Tech @ Tamaki Stem/Science

Task 1: The science behind bubbles.(watch a video/take notes)
Bubble liquid is made out of bubbles and water. You use a bubble wand to blow bubbles out. Don’t blow too hard or else you will blow that liquid out so blow slowly. The bubble is like a sandwich. The bread is the soap and the filling is the water. You also need air so that you can make a bubble. You can not blow water and make bubbles because water is made out of particles and sticks together. If you blow bubbles with a triangle wand, it will still be a round bubble because of the water. The water sticks together and doesn’t separate.

Task 2: Watch a video about bubble tricks.
Caterpillar, get a straw and blow bubbles on top of each other.
Bubble Carousel, blow two medium size bubbles and then blow small bubbles to make seats.
Cube Bubble, blow two medium bubbles and then blow 4 small bubbles around it. Stick your straw inside and blow gently to make a cube.

Task 3: MAKE BUBBLES!
Purpose: Making bubbles.
Equipment: a set of scales, 250ml beaker, a calibrated syringe, a stirring rod.
Method:
Fill the 250 ml beaker half full, that is measure 125 mls water. Weigh 5 grams of sugar. Measure 3 mls of glycerol and add to the solution. Stir it all together and blow the bubbles gently.

Hello everyone, it's me Finau. Today we had science class (tech @ tamaki). We were learning about the science behind bubbles. I enjoyed it and found it interesting. I worked with Aye and Adriana. I hope you have enjoyed this post. Please leave a positive comment o my blog. Bye!

Tech @ Tamaki Stem/Science

Know the parts of the flower and what the function (what they do and why) of each part is.

Parts of a flower (what I know): Pedals, Stem, Leaves, Pollen.
Parts of a flower diagram:


Be able to dissect a flower, arrange its parts and collate on an information sheet.
Complete scientific diagram of a flower.
Be able to speak above.

The first thing I think about when I see a flower is how pretty it looks and how it smells.

Equipment: Flower, Cutting Board. Knife.
Method:
Remove one pedal and the sepal so you can have a clean cut.
Hold the bottom of the flower by pinching it gently. Cut it down the centre.
Remove the long origin. Face the knife front ways and cut it gently.
The pollen tube will be shown and cut out.

Hi everyone, it's me Finau and this is a science experiment we did at Science at tech. I enjoyed digesting the flower. I hope you have enjoyed this post. Please leave a positive comment on my blog. Bye!

Tech @ Tamaki Stem/Science

Can you explain floating and sinking?

Why does something float? Floating is when something is very light floats.

Why does something sink? Sinking is when something heavy goes down the water.

Why does something semi-floats? Semi-float is when you can see the object at the bottom and the top.

Notes/Ideas: Things float because they have air in it or they are light. Things that sink are because they are heavy and have no air in them. Example, when people die in water they float because their blood is gone. Cruise ships float because of the air and the shape of it. A bowling ball will sink because of its mass and the basketball will float because it has air in it. If you take a bath and sit in the bathtub, the water will rise because of your mass and how much space you take up. Submarines can sink and float because when they have air or water they float but when they have no air or water, they will sink!

Buoyant - Float

Negatively Buoyant - Sink

Buoyancy Experiment


Aim or Purpose: Predict and test the buoyancy of objects.

Equipment: Marbles, Golf Ball. Table Tennis Ball, Tennis Ball, wooden blocks, plastic blocks, a water bath.

Name of Object:

Size

Weight

Composition

Prediction

Buoyancy Result

Ping Ball

13 cm

0.81 grams

Plastic

I know it’s gonna float.

FLOATS!


Golf Ball

14.3

43.50 grams

Hard Plastic

I know it’s gonna sink!

SINKS!


Big Marble

8 cm

20.87 grams

Limestone

It’s gonna sink.

SInk!


Small Marble

5 cm

5.13 grams

Limestone

Sink and float.

Sink!


Tennis Ball

20.5 cm

45.10 grams

Rubber

Float And Sink

SEMI-FLOAT!


Starro Foam

6.5 cm

0.42 grams

styrofoam

float

Float


Block

4.9 cm

8.58

plastic

Float and sink

Semi-float


Tiny wood cube

0.8 cm

0.54

Wood

Float

Semi-float


Small wood cube

1.9 cm

4.51 grams

Wood

Semi-float

Semi-float


Medium wood rectangle

10.1 cm

19.39 grams

wood

Semi-float

Semi-float


Big wood rectangle

14.3

115.48 grams

wood

Semi-float

Semi-float

Method: We measured the balls with the string and ruler. We then weighed them and found out what they are made out of and predicted if it was gonna float or sink or semi-float. We did the same thing with the wooden blocks.

Hey everyone, it's Finau and this is my science experiment I did at Tech. I did this experiment with Roman. I found it fun and interesting. I hope you have enjoyed this post. Please leave a positive comment on my blog. Bye!

Tech @ Tamaki Stem/Science

Aim or Purpose: 1. Measure an exact amount of sugar and dissolve in water to make a solution.

Thermometer
Weighing Machine
Stop Watch
Spatula

Pipette

Cold Water:

Hot Water:

Method: Measured the cold water and timed the sugar being dissolved in the cold water. We then measured the hot water and timed the sugar being dissolved in the hot water. The temperature for the cold water was 23 and the time was 1.38 sec. The hot water temperature was 77 and time was 22.43.

Result:
Temp of cold water = 23
Temp of hot water = 77
Time taken by water to dissolve in cold water = 1.38
Time taken by water to dissolve in hot water = 22.43

Hello everyone, it's me Finau. Today we had our stem/science class. We were measuring and checking the temperature of hot and cold water.  We also dissolved the sugar in the cold and hot water. What was really interesting for me was how the sugar dissolved in less than 30 seconds in the hot water but it took kind of a long time when it was in the cold water. I hope you have enjoyed this post. Please leave a positive comment on my blog. Bye!

Tech @ Tamaki Stem

Task 1: Look for science equipment that is not in your classroom.

I saw Test Tubes, Measuring Cylinders, Cups, Fish Tank, Science Lab.


Task 2: Learn how to pronounce science equipment.
A Burette

An Ammeter

A Pipette


A Bunsen Burner

Tongs

Brushes


A Microscope

Spring Balance

Tripods


A Watch Glass

Test Tubes

Crucible


A Thermometer

Litmus Paper

Beakers




weighing Machine

A Spatula

Funnels


Water Bottle

Magnifying Glass

A volumetric flask

Task 3: Measure 30ml of water. 

Hello everyone, it's me Finau. On Thursday we went to tech @ Tamaki. We were in stem/science and we were learning about different science equipment and we also did an experiment. Our teacher (Mrs Sharma) asked us to measure 30ml of water and I did it with Aye and Adriana. We used water, test tube, beaker and a pipette. I hope you have enjoyed this post. Please leave a positive comment on my blog. Bye!