Science experiment

Inquiry Experiment     

Aim/Purpose : 

To see what happens when baking soda and vinegar mix/combine 

To see the reaction that occurs when these two substances are mixed

Prediction - What do we think is going to happen:

We think it will explode/ It’s going to blow up - Anoushka, Hassan

The ziplock bag will pop open and the liquid will spill out-

It could fizz up 

The bag might fill up with air - Fariah 

Fizz up like soda when shaken

The air pressure created inside the bag will cause the seal on the bag to pop open - Arina

Steps:     

1.  Open up a paper towel on a flat surface
2. Put 4 levelled teaspoons of baking soda in the centre of the paper towel
3. Wrap up the baking soda in the paper towel like a package - Keep the baking soda concentrated in the middle of the paper towel
4. Tape down your package of baking soda with a piece of masking tape so that everything stays in place
5. Open the vinegar and pour it into a cup - until the cup is half full
6. Then open a zip lock bag and pour the vinegar into it
7. Hold the package inside the zip lock bag, making sure it doesn’t yet make contact with the vinegar - then zip up the bag - making sure that it is completely closed
8. Let the package of baking soda drop into the vinegar and shake the bag up a little so that they start to mix
9. Observe what happens

https://www.youtube.com/watch?v=FlmsiPxEuK0

Materials/equipment:

 *Baking Soda  (4 x tablespoons) 

*Vinegar (half a cup)

*Ziplock sandwich bags 

*Plastic spoon

*Paper towel 

*Masking tape

Roles within the group:

1. Presenter - conducts the experiment 

2.Assistant - collects all the materials

3.Videographer - takes a video of the experiment

4.Recorder - Record the result

After students have prepared they can present the experiment in front of the class who will be the audience. The videographer can record the experiment and the recording can be shared at a later stage.  

The Result - What did we see happen?

The result was an explosion, Arina had predicted  that it would fill with air pressure that caused the seal to pop open. The baking soda which is a citric powder mixing with a liquid which was a Vinegar had made a chemical reaction.  One is a base and one is an acid. When they mix hydrogen ions are made which expand and build air pressure in the bag until it pops.

Variables - How could we change the variables,Predict what might happen if we change the variables  - see below.

Experiment - Were our predictions accurate?

Nearly, some were more accurate than the others

Put 5 or more teaspoons of baking soda into the package - Bigger explosion/more powerful 

If there is too much baking soda and not enough vinegar, it may not work

Put more vinegar  - Bigger explosion/not pop  

Way less baking soda and wrapped in more paper towels - nothing - it would take a longer time to see a reaction 

Baking soda - With no package surrounding it - The reaction would happen instantly and uncontrollably 

The Science - Why did it happen? 

The  pop had occurred because the vinegar is a base and the baking soda is an acid. 

Here are some websites to look at…. You may be able to find other websites too!

https://littlebinsforlittlehands.com/balloon-baking-soda-vinegar-experiment-kids/

https://www.science-sparks.com/amazing-baking-soda-experiments/

https://www.wonderopolis.org/wonder/what-happens-when-you-mix-vinegar-and-baking-soda

https://carrotsareorange.com/baking-soda-vinegar-reaction-experiment/

Day in the life of a fantail

Fantail bird of the year

Saturday 13th   January 2019

‘Cheet, cheet’ Oh, hello there good morning. My name is Felicity and I'm a fabulous Monitoring Fantail. I live in the Tongariro forest. Soooo let's get moving………… 

‘Cheeeeet cheeeeet’ I call out at sunrise. Time to eat, I eat small invertebrates, such as moths, flies, beetles and spiders mmm yum!!!

Now for my morning song, ‘Chooop, choop, choop, Cheeeep, choop, chchchchch eep, peeeep, Peeeeeep chchchchch eeep, cheap, cheap, peeep, cheap, cheap, cheeeeeeet’

Filtering, fluttering around my home tree………. I spotted a morepork trying to steal my cute little chicks for his/her lunch. ‘Cheeeeet, cheet, cheeeet, cheeeet, cheat, cheat’ I call out to my fellow mate. I can’t believe this morepork!  We both flap our tails in his/her face and hit our vibrant orange becks on top of his head. 

After all this chaos I think it would be a good idea to go to bed and sleep. I hope you have learned a lot about me. Well, this is the end of today. ‘Bye, bye Cheat, cheat.’ 

Science experiment-rm3

Plants Absorbing Water 

Aim:

To colour celery or cabbage leaves - Try and see how plants absorb water

Materials 

Glass jars x4 

Celery

Cabbage leaves 

4 different colours of food colouring 

Water 

Scissors/knife/chopping board to cut the celery

Method 

Fill up 4 glass jars up to around half way 

Put approximately 10 drops of different coloured food colouring into each jar

Place a celery stick or a cabbage leaf into each jar

Explanation -

Part 1 - Explain why plants need water- 

Plants need water to stay alive. It helps them stay strong, stable, keep their shape, size and to grow really well .Eg; a tree could use water for its fruit and body/structure, shape and size, a flower could use water for its growth and beauty.  

Part 2 - How they absorb water-

Osmosis is the process of the root system.  It is how the water is absorbed into the roots and how it travels throughout the plant and gives it the nutrients it needs. A plant gets its water from the soil, using the smallest parts of the roots {if the roots are transparent then it also means that the osmosis of the plant is transparent.} Then it transfers water molecules throughout the plant. The plant’s roots also absorb nutrients from the soil.  The evaporation is another step that it takes to get all of the harmony it consists of; all plants actually are water. The plants stem stores most of the water from osmosis.

How Are Cyclones Formed

 How Are cyclones formed?

People who study the weather say that, ‘a cyclone is a large amount of air that circles around a strong atmospheric pressure. Cyclones are characterized by  inward spiraling winds that rotate about a zone of low pressure. Cyclogenesis is a progress of a cyclone formation intensification.”

A cyclone looks like a really huge whirlpool that is found in the tropical sea. It looks like a large mass of  air that just rotates. In fact they are more of a dice shape than a cyclonic swirl. When you look at them from space, you can get a better view of them  than if you were close, even though you can’t see its close details.

To form a cyclone, firstly the sea would need warm, moist air over itself. Then as  the water slowly starts to circle around moving up into the air {upward from near the surface of the sea, it leaves less air near the sea}.  Soooooooo, technically the warm air rises, causing an area of low pressure below. And that is how a cyclone is formed.

  

As know you know about how a cyclone is formed you will be able to recognise it. 

THANK YOU !!!

References:

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Cyclone - Wikipedia  

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https://www.conserve-energy-future.com › formation-and-structure-of-

Tropic…

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https://sites.google.com/site/disasterportal/stroms_cyclones/cyclone-formation

Presentation