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Tuesday, August 8, 2017

Learning how to read scientific reports

Kia ora
We are learning how to read and write scientific reports. We have been doing experiments and writing about them. This is a reading activity we did. We had to be able to match a thesis with its hypothesis.

We are learning how to understand the structure and language of a report about a scientific experiment #3 Understanding that a hypothesis is a brainy prediction based on what you already know.
In this exercise you need to match a thesis with its hypothesis.  Use the ‘Fill tool’ to colour code the matching ideas.
                               Thesis                                                                      Hypothesis
I know this……                                                                         So therefore if I do this I think this will happen…
I know that a puddle of water is a small amount of water lying (usually) on the ground. I know that water is a substance which is found on our planet and that it can exist as a solid (ice), liquid or a gas (water vapour). I know that the main reason water changes from one state to another on Earth is because of  temperature -heat or cold. On Earth a sunny day is when there are no clouds, the sky is blue and the temperature is usually warm or hot.
I predict that when I mix vinegar and baking soda together that a chemical reaction will occur and that I will be able to notice this. I might feel hotness or coldness, notice smoke or bubbles, smell something, hear some kind of noise or  find that the taste or texture of the foods has changed.
I know that heavy things usually sink and light things float. However, container ships are heavy but they still float so there must be more things that have an effect on floating than just weight. Blutack is a squishy material that is quite light. It usually comes as a wide, flat strip but you can shape it into a round ball, a sausage shape, an O shape etc or you could flatten it out into a thin, wide shape like a leaf or saucer. Leaves usually float and ships look a little like a leaf shape.
I predict that when I take an ice cube out of a freezer it will begin to change back into liquid water (this is called melting) because it will no longer be colder than 0 degrees centigrade.
I know that an ice cube is water which is frozen. I know that that liquid water freezes into ice when the temperature reaches 0 degrees centigrade. An ice cube will stay an ice cube as long as it stays in a freezer.
I predict that if I make a puddle of water somewhere on the playground on a hot, dry day that the puddle will dry up and disappear quite quickly.
I know that everything we eat is made up of different kinds of chemicals.Sometimes when you mix different chemicals together they react with each other in different ways and the substances will do things that they didn’t do before (chemical reaction) and become different to what they were like before (chemical change). You will be able to notice things happening by using your 5 senses to  listen, smell, feel, look at and sometimes taste what is going on. I know that vinegar and baking soda are both food substances and I learned that they are chemically different
I predict that if I take some ice cubes out of a freezer and wrap them in different materials, I will find that one material will keep the ice cube frozen for longer than the others. This material would then have proven itself to be the best insulator.
I know that liquid water changes into a solid (ice) when the temperature reaches 0 degrees centigrade. I know that a freezer will keep water solid because a freezer’s job is to keep food at a temperature just below 0 degrees centigrade.
We are going to use Bluetack as our material. We will use the same amount of Blutack to make three different shapes. One will be a straight, rectangular strip of Blutack, one will be a compact, round ball and the third will be a rounded  saucer shape like a boat. We predict that at least one of these will float.
I know that insulators are materials that can be used to protect yourself from too much heat or cold. When we put clothes on because we are cold, the clothes are insulators which help our bodies stay warm. If you put insulating material like Pink Batts in the ceiling of your house, in the winter the Batts help keep warm air inside the house. In the summer, The Pink Batts help stop hot air coming into the house so they help to keep us cool. Many  food containers like Thermos flasks and Chilly Bins are made out of insulating materials to keep food hot or cold.
I predict that when I put some liquid water into a freezer it will change from a liquid state into a solid state (ice) because the temperature in the freezer will be below 0 degrees centigrade.

Thursday, August 3, 2017

Learning how to write reports about a scientific experiment.

Kia ora.

We are having a science fair this term so we needed to learn how to write a report about a scientific experiment. Our teachers chopped a piece of scientific writing into bits and we had to sort them out into the right order. We had to match the structure clues with the correct sentences and paragraphs. It was tricky. When we were finished we used the report to carry out a floating and sinking experiment using Blutack. The Blutack wouldn’t float unless we squeezed  it into the shape of a boat. It was fun. Here is a picture.




Wednesday, July 26, 2017

Foaming and Fizzing

Hi fellow bloggers
This term our school has a theme is Up, up and away and we are learning about science. We did an experiment on foaming and fizzing. What we did was, we tasted two food chemicals and they were vinegar and baking soda the vinegar tasted sour and the baking soda tasted plain. We mixed them together and observed what would happen as soon as we mixed them together it started to rise and bubble when the bubbling stopped we tasted it it was sour and plain at the same time. Before we started the experiment we wrote a science report on foaming and fizzing, I hope you liked my blog post :)



B
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TITLE
Yuk and Yum!
QUESTION.

If we mix vinegar and baking soda together will we observe some kind of reaction?
THESIS.
Vinegar tastes sour and it is a liquid. Baking soda is a solid, soft white powder and it tastes salty and horrible. They are both food substances but based on their different taste, they must be chemically different. So, if they are mixed together, there might be a chemical reaction.
HYPOTHESIS.
We predict that when we mix vinegar with baking soda an observable reaction will accur. We might see and hear an explosion, fire, foaming, bubbles, fizzy or something else. The resulting mixture might look or taste different. There might even be a different in size of the materials.

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EQUIPMENT
AND MATERIALS:
Baking soda
Vinegar
Container for mixing
Teaspoon for mixing
PROCEDURE
Step 1: pour the vinegar into a container to a depth of about 2cm.
Step 2: Use a teaspoon to measure in half teaspoon of baking soda.
Step 3: mix with a teaspoon.
Step 4: observe and record what happens.
OBSERVATIONS:
At step 2 the mixture started to fizz. A fizzing sound was heard, bubbles were seen to appear in the mixture and the materials rose higher in the container. At step 3, when the materials were mixed, even more bubbles appeared and the volume of the materials in the container rose even higher. When the mixture was tasted, the taste was unpleasant and was similar to the baking soda.

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ANALYSIS
AND
CONCLUSION
The goal of this experiment was to see if an observable reaction would take place when vinegar and baking soda were mixed together. The result of our experiment prove that our hypothesis was correct. We predicted that there would be an observable reaction, and there was. There was lots of foaming and fizzing happening and bubbles appeared which means a gas must have been produced. A quick check online showed us that the gas was carbon dioxide.


Thursday, June 29, 2017

Zoofari

Hi fellow bloggers
This week we went to Auckland zoo on a zoofari trip. We slept in the old elephant house. We also went on a night safari. Here is a picture of a tiger that I saw.


I am working on an animal report about servals and I saw one! It was smaller than I thought it would be. Did you know that cheetahs aren't the fastest animal in the world! They are the fastest land animal.

So I hope you enjoyed this blog post.

Ka kite ano.

Thursday, June 22, 2017

Kiwi Kids News

Hi Fellow bloggers,
This year my class has been doing Kiwi Kids News. It's when you go onto Kiwi Kids News and you pick an article and read it then answer some questions. So here is an article I did.








Sunday, June 18, 2017

My basic facts and multiplication progress

Hi fellow bloggers, Here is my basic facts progress for this year. I am on stage six and I am improving on stage six. Here are my scores for term 1 and 2 I have improved since last term.


Zebra Report

Hi fellow bloggers, I had to do a zebra report. I had to do about 20 bullet points and made it into a report........

Zebra Report
Did you know that? Each Zebra has a unique white and black pattern and their skin is protected from insects by rolling in mud. Zebras are mammals, that means they are warm blooded. When baby Zebra foals are born they have brown and white stripes. The scientific name for a Zebra is Equus Quagga.

Did you know? Zebras are related to donkeys and horses. They have one hoof on each leg. Their stripes help them camouflage in long wavy grass, they like to roll in mud and when it dries they shake it off along with loose hair and dry skin. A Zebra’s hoof is an enlarged (becomes large) toenail. Zebras don’t have colour vision but their eyes can see better at night. Zebra’s necks are short and stiff.

Zebras eat a diet of shrubs, herbs, twigs, leaves and bark and eat a variety of grass. They are herbivores and don’t hunt for food. They are not picky eaters and aren't fussy about what they are eating. Zebras will travel up to 1,800 miles to search of food.

Wild zebras live in Africa, zebras are native to Africa and live in a herd up to 5 or 15 Zebras. Zebras are found on grasslands, along the edge of the desert in eastern Africa and are found across southwestern Africa. African animals are very noisy. The mountain zebra’s are found in South Africa, Namibia and Angola.

These are the zebra’s predators: lions, spotted hyenas, leopards, hunting dogs, crocodiles and cheetahs. Humans are killing zebras for their skins. Zebras don’t freeze when they hear danger coming.

Zebras run up to 40 miles per hour and they live up to 25 years. They love to roll in mud and dust. Did you know that zebras confuse their predators with their stripes when the zebra herd is planning to escape? Zebras recognize each other with their own individual black and white stripe pattern. When a baby zebra (known as a foal) is in the mother's tummy it stays in there for 13 Months.

Zebras are special and have beautiful, unique stripe patterns. They are an iconic animal to Africa and are an important animal to take care of.