Science

__Science Fair__ ﻿ __2011__

**Science Fair Marking Term 2 2011** ☒ Not achieved ☑ Achieved ☑☑ Advanced

**Scientific Process and Background:** ☑☑ Clear aim/hypothesis carried through ☑☑ Method, accurate experimentation ☑☑ Accurate experimentation, controls, variables, repetitions ☑☑ Results clear, accurate, include appropriate data ☑☑ Conclusions are in line with aim/hypothesis ☑☑ Results are interpreted and discussed (conclusion)

**Technical Skill:** ☒ Design of the experiment ☑ Use of apparatus and materials

**Originality:** ☒ Imaginative/creative ideas ☒ New/Unusual application in science

**Presentation of Display:** ☑☑ Colour/form/clarity/graphics ☑☑ Innovative appeal

**Log Book:** ☒ Authentic ongoing record with raw data included ☒ Has supporting documentation, bibliography, acknowledgements

**Teacher Comment: Shavaugn your presentation is fantastic well done! I love the way you have used popcorn as your heading. You hypothesis and method are clear and I would be able to follow them easily. It would have been great to see you complete this experiment more than once to make it a fair test. You need at least five to make it a fair test!**

**Student Comment:**

__**Topic:**__ What popcorn pops the fastest?


 * Act Ⅱ- Butter Lover (Microwave)
 * Morrison Farms- Butter Flavour(Microwave)
 * Pop ‘n’ Good -Natural (popping corn)
 * Pams- Butter Flavour (Microwave)

__**Hypothesis:**__ I think that the brand of popcorn that will pop the fastest will be the popcorn with not as much taste and the bag of popping corn will have the little kernels. I think the slowest brand of popcorn will taste the nicest and will have big thick kernels.

__**Aim:**__ How many kernels are left un-popped after being in a 1000watt microwave?

__**Method:**__

• Popcorn • Microwave • Timer • 4 Plastic Bowls
 * //-Materials://**


 * //-Procedure://**
 * 1) Buy all 4 brands of popcorn that you will be using.
 * 2) Weigh each of the popcorn brands so that each bag is filled with 10grams of kernels.
 * 3) 1 by 1 put the popcorn brands in a 1000w microwave for 2 minutes and 30 seconds.
 * 4) Take the popcorn out after the 2 minutes and 30 seconds, and pour the popcorn into plastic bowels each with the name of the brand on it.
 * 5) Compare the amounts of kernels that are still not popped and record the amount you have counted.
 * 6) Record your answers onto a book and

__**Results:**__

30-seconds || 30 seconds || 102 || 30-seconds || 30 seconds || 64 || 30-seconds || 30 seconds || 27 || 30-seconds || 30 seconds || 437 ||
 * **Popcorn Brand** || **Grams** || **Time** || **Resting Time** || **Un-popped kernels** ||
 * Pams- Butter Flavour (Microwave) || 100g || 2-minutes
 * Act Ⅱ- Butter Lover (Microwave) || 100g || 2-minutes
 * Morrison Farms- Butter Flavour(Microwave) || 100g || 2-minutes
 * Pop ‘n’ Good -Natural (popping corn) || 100g || 2-minutes

//All results were found using a 1000watt microwave.//

__**Conclusion:**__

The final results were clear. The fastest popping popcorn was… Morrison Farms. This means that the the popcorn obviously had the right amount of moisture which meant that it was able to pop quickly with a reasonable amount of kernels left. Next time I do this will make a book about every thing I saw instead of having to store it in my brain. Although popcorn is a delicious snack, sometimes we have to make sure we are buying the right brand, this will mean that you will have lots of popcorn instead of lots of kernels.

Explanation:


 * What makes Popcorn Pop?**

Every Popcorn kernel has moisture and oil. When kernels are heated to a temperature that is above the boiling point of water, the moister inside the kernel becomes really heated steam.

The steam that is inside the kernel has nowhere to go because the hull is moisture proof. Under these conditions, the starch in the kernel gelatinizes which causes it to become soft.

On continued heating, the pressure and temperature inside the hull increases and then hull ruptures. When the hull ruptures, the pressure in the kernel drops. The steam expands a lot and the starch and the proteins expand into airy foam.

The foam cools down very fast and the starch and proteins become the crispy piece of popcorn that hundreds of people love and enjoy eating.

( If this is how popcorn pops then why don’t all the kernels pop )


 * Why doesn’t Popcorn always pop?**

For kernels to pop, they need to be heated at a decent rate. If you heat the kernel sot fast and the hull ruptures before the starch in the kernels center can fully gelatinize. This will cause slightly popped kernels but not fully.

As well as being heated to fast popcorn can be cooked to slowly as well. If the popcorn is heated too slowly, then the kernels will stay un popped because the steam can leak out.

Kernels that have to much moisture do not pop well either. When you eat freshly harvested popcorn, what you might end up with are chewy pieces of popcorn…

If you want the best results, kernels need to have the exact amount of moisture to create steam, and they have to be heated at the right temperatures. If either of these conditions are not met, popcorn may not pop.



Starch- Tasteless white substance occurring widely in plant tissue Gelatinizes- Make or become jelly like Hull- The outer covering of a fruit or seed Ruptures- Cause to break or burst suddenly and complete
 * Meanings:**

==

__ My Learning Targets! __
=== My next step is: to introduce your topic by describing it. What is baking soda? Include more information in my explanation and conclusion (Not just two sentences) ===

Date achieved/signed: Miss Stovold
__Monday 23rd May__

L.I-Identify key words/structure of explanatory text.

Success Criteria:

Structure of explanation writing: __Introduction__- definition of the topic that you are writing about. -describe the topic __Explanation__- how something works or why something happens. will need to research to do this __Conclusion__- summary

Key/technical words: Static equalizes electricity humid billows crackling brooding dazzling separate celsius

__//Why does vinegar and baking soda react in a fizz?//__

Baking soda and vinegar are ingredients we use in a lot of ways not just for baking but for science experiments too. One of the most popular ways us kids use it is to make a overflowing volcano, the baking soda and vinegar are the main ingredients and are the ingredients that cause the ‘**explosive**’ volcanic action.

Vinegar contains acetic acid and baking soda. Baking soda is a sodium bicarbonate/ alkali. When sodium bicarbonate mixes with the vinegar they react together to make carbonic acid. Carbonic acid is not stable, and it immediately falls apart into carbon dioxide and water. Carbon dioxide weighs more than air so, it flows almost like water when it overflows in a container.

The fizz is created with the formation of carbon dioxide gas. What is left is a dilute solution of sodium acetate in the water.

__Thursday 12th May__

**Kitchen Chaos!**

__Aim:__

Find out what 5 substance out of the kitchen are.

__Hypothesis:__

I think that A is Baking Soda I think that B is Salt I think that C is Icing Sugar I think that D is Cream of tartar I think that E is Corn Flower.

__Method:__


 * Put each substance into the glass one by one.
 * Place the Litmus paper into each substance that is in the glass.
 * Then if nothing happens with that add the vinegar.
 * If nothing happens again with that add the iodine.

__Results:__

<span style="color: #0000ff; font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px;">A- Cornflower <span style="color: #0000ff; font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px;">B- Salt <span style="color: #0000ff; font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px;">C- Baking Soda <span style="color: #0000ff; font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px;">D- Icing Sugar <span style="color: #0000ff; font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px;">E- Cream of Tartar

__Thursday 5th May__

Experiment: **Curious Colors -****Making a color disk spinning top**

<span style="display: block; font: normal normal normal 13px/normal 'Euphemia UCAS'; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px;"><span style="color: #0000ff; font: normal normal normal 13px/normal 'Euphemia UCAS'; letter-spacing: 0px; margin: 0px;">__**Explanation**__

<span style="color: #0000ff; font: normal normal normal 13px/normal 'Euphemia UCAS'; margin: 0px; min-height: 18px;">When i tried this experiment my results were: <span style="color: #0000ff; font: normal normal normal 13px/normal 'Euphemia UCAS'; margin: 0px; min-height: 18px;">During the spinning of the disc I saw Grey on the disc instead of the colors that were originally on the disc. <span style="color: #0000ff; font: normal normal normal 13px/normal 'Euphemia UCAS'; margin: 0px; min-height: 18px;">I think this happened because the colors were not pure and there were gaps in the color

<span style="color: #0000ff; font: normal normal normal 13px/normal 'Euphemia UCAS'; letter-spacing: 0px; margin: 0px;">The spinning disc turned grey not white because the colors were not pure. <span style="color: #0000ff; font: normal normal normal 13px/normal 'Euphemia UCAS'; letter-spacing: 0px; margin: 0px;">If the colors had of been pure the disc would have gone white because of the mixing of the colors. <span style="color: #0000ff; font: normal normal normal 13px/normal 'Euphemia UCAS'; letter-spacing: 0px; margin: 0px;">Our eyes cannot focus fast enough to see the different colors separately so they mix together and appear to be white. <span style="color: #0000ff; font: normal normal normal 13px/normal 'Euphemia UCAS'; letter-spacing: 0px; margin: 0px;">The colors red, blue and green are called primary colors and they cannot be made by mixing other colors together. <span style="color: #0000ff; font: normal normal normal 13px/normal 'Euphemia UCAS'; letter-spacing: 0px; margin: 0px;">The other colors of the rainbow can be made by mixing a combination of the three primary colors together. <span style="color: #0000ff; font: normal normal normal 13px/normal 'Euphemia UCAS'; letter-spacing: 0px; margin: 0px;">When the spinner moves fast you see light reflect from all its colors, but your brain cannot separate them so you see a mixture of all the colors; which is white.

<span style="color: #0000ff; font: normal normal normal 13px/normal 'Euphemia UCAS'; letter-spacing: 0px; margin: 0px;">Your spinner may look grey to you because your colors are not pure.

__ Reflection: __

Today I learnt that Primary colors make white when they are spun fast. I enjoyed coloring the spinning disc in. I choose green because it was fairly simple the experiment today although it didn't work as it was meant to.

__Monday 2nd May__

**Experiement: Experience Gravity Free water**

When I tried this experiment my results were: I could hold my cup upside down on carboard for 10 seconds. I think I could have done it for longer if I'd had less air bubbles in between the cup and the cardboard.

__Reflection__

I learnt that with no air bubbles you can hold a cup fulled with water upsied down on cardboard with out the water spilling out. I chose Yellow because my experiment didn't work exactly how it was meant to since we had air bubbles.

__ Tuesday 3rd May __

Science Fair Due Friday 3 June Week 5 = = =<span style="font-size: 1.4em; margin: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 5px;"> <span style="font-size: 1.4em; margin: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 5px;">__ Science Fair __  =

Please have a close read of the following site that Mr Marsh has put together. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #0000ff; font-size: 17px; line-height: 25px; padding-right: 10px;">@http://ourspace.tauranga-int.school.nz/course/view.php?id=64

[|ScienceFairBooklet.pdf]
 * [[image:http://c1.wikicdn.com/i/mime/32/application/pdf.png height="32" link="http://rimuroom42.wikispaces.com/file/view/ScienceFairBooklet.pdf"]] ||
 * external image pdf.png ||

Useful Science sites for ideas: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #0000ff; font-size: 18px; padding-right: 10px;">@http://www.sciencebuddies.org/ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #0000ff; font-size: 17px; line-height: 27px; padding-right: 10px;">@http://www.all-science-fair-projects.com/

Cool Science Sites <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #0000ff; font-size: 18px; padding-right: 10px;">@http://www.sciencelearn.org.nz/

====<span style="color: #0000ff; font-size: 1.066em; font-weight: normal; margin: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 5px;"><span style="font-size: 1.066em; font-weight: normal; margin: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 5px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; font-size: 18px; padding-right: 10px;">Please Note:  ==== ====<span style="color: #0000ff; font-size: 1.066em; font-weight: normal; margin: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 5px;"><span style="font-size: 1.066em; font-weight: normal; margin: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 5px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; font-size: 18px; padding-right: 10px;">This table is different from the one outlined in the above Science Fair booklet. There will be__**no extensions**__ given, Class time will be given for writing up aim, hypothesis, instructions, explanations, diagrams, tables etc and putting displays together. Parents please support your child with carrying out their experiments as this will be the main element of their homework during Science Fair. ====


 * ||  || <span style="color: #0000ff; display: block; font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; text-align: center;">**Order of Events** ||   || <span style="color: #0000ff; display: block; font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; text-align: center;">**Timeline** ||


 * <span style="color: #0000ff; font: normal normal normal 13px/normal Arial; letter-spacing: 0px; line-height: 19px; margin: 0px;">1 ||  || <span style="color: #0000ff; font: normal normal normal 14px/normal 'Times New Roman'; letter-spacing: 0px; line-height: 19px; margin: 0px;">Choose a topic including is it a //Science or Technology// display ||   || <span style="color: #0000ff; font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">Week 1 ||


 * <span style="color: #0000ff; font: normal normal normal 13px/normal Arial; letter-spacing: 0px; line-height: 19px; margin: 0px;">2 ||  || <span style="color: #0000ff; font: normal normal normal 14px/normal 'Times New Roman'; letter-spacing: 0px; line-height: 19px; margin: 0px;">Completed Aim and Hypothesis (science) or Question (technology) ||   || <span style="color: #0000ff; font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">Week 2 ||

<span style="color: #0000ff; font: normal normal normal 12px/normal 'Times New Roman'; line-height: 19px; margin: 0px;"><span style="font: normal normal normal 12px/normal Webdings; letter-spacing: 0px;"> //What do you need?// <span style="color: #0000ff; font: normal normal normal 12px/normal 'Times New Roman'; line-height: 19px; margin: 0px;"> <span style="font: normal normal normal 12px/normal Webdings; letter-spacing: 0px;"> //Who do you use?How many?// <span style="color: #0000ff; font: normal normal normal 12px/normal 'Times New Roman'; line-height: 19px; margin: 0px;"> <span style="font: normal normal normal 12px/normal Webdings; letter-spacing: 0px;"> //What help do you require?// <span style="color: #0000ff; font: normal normal normal 12px/normal 'Times New Roman'; line-height: 19px; margin: 0px;"> <span style="font: normal normal normal 12px/normal Webdings; letter-spacing: 0px;"> //How will you measure and collect data?// <span style="color: #0000ff; font: normal normal normal 12px/normal 'Times New Roman'; line-height: 19px; margin: 0px;"> <span style="font: normal normal normal 12px/normal Webdings; letter-spacing: 0px;"> //How many trials/experiments/prototypes will// //you complete?// <span style="color: #0000ff; font: normal normal normal 12px/normal 'Times New Roman'; line-height: 19px; margin: 0px;"> <span style="font: normal normal normal 12px/normal Webdings; letter-spacing: 0px;"> //How will you present data? Numbers are good!// <span style="color: #0000ff; font: normal normal normal 12px/normal 'Times New Roman'; line-height: 19px; margin: 0px;"> <span style="font: normal normal normal 12px/normal Webdings; letter-spacing: 0px;"> //Do you need to complete a Animal Ethics form?// ||   || <span style="color: #0000ff; font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">Week 2 ||
 * <span style="color: #0000ff; font: normal normal normal 13px/normal Arial; letter-spacing: 0px; line-height: 19px; margin: 0px;">3 ||  || <span style="color: #0000ff; font: normal normal normal 14px/normal 'Times New Roman'; letter-spacing: 0px; line-height: 19px; margin: 0px;">Planned how you are going to complete experiments (science) or investigation of needs assessment and prototype design (technology)


 * <span style="color: #0000ff; font: normal normal normal 13px/normal Arial; letter-spacing: 0px; line-height: 19px; margin: 0px;">4 ||  || <span style="color: #0000ff; font: normal normal normal 14px/normal 'Times New Roman'; letter-spacing: 0px; line-height: 19px; margin: 0px;">Start experiments (science) or needs assessment (technology) ||   || <span style="color: #0000ff; font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">Week 3 ||


 * <span style="color: #0000ff; font: normal normal normal 13px/normal Arial; letter-spacing: 0px; line-height: 19px; margin: 0px;">5 ||  || <span style="color: #0000ff; font: normal normal normal 14px/normal 'Times New Roman'; letter-spacing: 0px; line-height: 19px; margin: 0px;">Needs assessment (technology) completed ||   || <span style="color: #0000ff; font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">Week 3/4 ||


 * <span style="color: #0000ff; font: normal normal normal 13px/normal Arial; letter-spacing: 0px; line-height: 19px; margin: 0px;">6 ||  || <span style="color: #0000ff; font: normal normal normal 14px/normal 'Times New Roman'; letter-spacing: 0px; line-height: 19px; margin: 0px;">Experiments (science) and prototype testing (technology) completed ||   || <span style="color: #0000ff; font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">Week 3/4 ||


 * <span style="color: #0000ff; font: normal normal normal 13px/normal Arial; letter-spacing: 0px; line-height: 19px; margin: 0px;">7 ||  || <span style="color: #0000ff; font: normal normal normal 14px/normal 'Times New Roman'; letter-spacing: 0px; line-height: 19px; margin: 0px;">First draft completed ||   || <span style="color: #0000ff; font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">Week 4/5 ||


 * <span style="color: #0000ff; font: normal normal normal 13px/normal Arial; letter-spacing: 0px; line-height: 19px; margin: 0px;">8 ||  || <span style="color: #0000ff; font: normal normal normal 14px/normal 'Times New Roman'; letter-spacing: 0px; line-height: 19px; margin: 0px;">All written work, diagrams, tables, graphs, photos, and other graphics completed and checked by the class teacher**BEFORE** it is attached to the display ||   || <span style="color: #0000ff; font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">Week 5 ||


 * <span style="color: #0000ff; font: normal normal normal 13px/normal Arial; letter-spacing: 0px; line-height: 19px; margin: 0px;">9 ||  || <span style="color: #0000ff; font: normal normal normal 14px/normal 'Times New Roman'; letter-spacing: 0px; line-height: 19px; margin: 0px;">**Completed display ready to be marked by teacher** ||   || <span style="color: #0000ff; font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">Monday Week 6 ||