Science



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

☑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)
 * Scientific Process and Background:**

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

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

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

☑Authentic ongoing record with raw data included
 * Log Book:**

☑Has supporting documentation, bibliography, acknowledgements

**Teacher Comment:** Thanks Kyle this was an interesting experiment, I now have some tips on how to slow down my eyes watering when I am cutting onions. It is good that you have done some research about what makes your eyes water, sometimes you need to clarify your understanding so it is clear. What did boiling or freezing do to the enzymes that slowed down the watering process e.g. by freezing the onion the enzyme particles were slowed down and not released into the air therefore .... this resulted in ... **Student Comment:** I think that in my science fair I did good because I included why the enzymes didn't make my eye's water for both of the tests. I think my board and layout was good because it took up the whole board and the information on it was easy to read. I think I could have done better if I had of added a little bit more information on why the enzymes didn't make my eye's water for as long as it did.

__Sunday 22 May 2011__

Freezing and Boiling Onion's

Introduction: I have chosen topic because every time I am cutting onions in the kitchen my eye’s alway’s start to water and I put so sun glasses on but it still doesn’t work. So I decided to see if by freezing an onion or by boiling an onion and then cutting it, if your eye’s still water.

Aim: My aim is to find out if by freezing an onion in a freezer and if you put an onion in boiling water and then cut an onion will your eye’s still water.

Hypothesis: I think that by boiling the onion in a bowl of boiling water, it will stop your eye’s from watering the best because I think that the boiling water will heat the onion so much that it will become almost dead and it won’t be able to make your eye’s water.

I think that by freezing an onion in the freezer it won’t work because as well because I think that it will make the onion make your eye’s water even more from the cooling effect of the freezer.

I think that by freezing an onion when you haven’t done anything to it will be the shortest amount of time for your eye’s to water.

Method:

Materials: 2 Onion’s Knife Bread Board Freezer Jug Water Stop Watch Camera Stainless Steel Bowl Tin Foil

Steps

Boiling Onion

1. Get the materials ready for the test. 2. Peel the skin off of one of the onion’s. 5. Continue to watch the bowl of hot water and if the temperature is dropping boil the jug again and then quickly tip old water out and put new water in. (Continue doing each time temperature drops low.)
 * 1) Boil the jug until ready and poor into the stainless steel bowl.
 * 2) Put the onion into the boiling water and start the stop watch. Place tin foil over the bowl as soon as the onion is in the water to trap the heat.
 * 1) When the 1:30 minutes is up take the tin foil off of the bowl. Cut the onion into small pieces and keep your face in a similar position near the onion.
 * 2) Continue Cutting until onion is completely cut and then continue to look at the onion for 30 more seconds.
 * 3) Put the results together so it can be charted.
 * 4) Continue to do this again except take onion out after 30 minutes.

Freezing Onion

1. Get the materials ready for the test. 8. Put the results together so it can be charted or graphed.
 * 1) Peel the skin off of the next and last onion.
 * 2) Place the onion in the freezer and start the stopwatch.
 * 3) Check the onion every 5-10 minutes to make sure the onion is getting cold or freezing.
 * 4) When the 1:30 minutes is up take the onion out of the freezer.
 * 5) Cut the onion into small pieces and keep face in a similar position near the onion.
 * 6) Continue Cutting until the onion is completely cut and then continue to look at the onion for another 30 seconds.

Results:

When I boiled the onion for 1:30 minutes, the onion didn’t make my eye’s water but I stopped the timer at five minutes because nothing was happening. While I was boiling the onion in the water, I came across weird things like in the 1 hour and 30 minutes test the water turned into a light green and when I boiled new water and put the onion in the water went a light green almost instantly. When I boiled the other onion for the second test, The water started off as being a greenish colour with a bit of gold in it, but then it turned into a really dark and visible gold and brown colour which was weird considering the onion were the same kind. When I started cutting the onion, at first nothing was happening and my eye’s were fine, but then from out of no where my eye’s started to water and and sting like crazy! In both of the test’s the water stayed boiling hot for about 30 minutes but then the water started to get colder.

When I froze the first onion in the freezer for 1:30 minutes, the onion was getting really cold and starting to freeze really good. After 30 minutes the water was quite cold and little bits of ice were starting to form. After 1 hour in the freezer, big bits and pieces of ice were forming in the bowl in the freezer. When the time was up and I cut the onion nothing happened and my eye’s were fine and not watering. But after 3 minutes and 36 seconds my eye’s started to hurt and then eventually watered. For the second test when I froze the second onion, the onion wasn’t as frozen as the other onion because it was in the freezer for only 30 minutes. When 15 minutes was up the water wasn’t very cold but it had gotten colder than when it first went in the freezer. When I cut the onion I thought that nothing would happen for the first minute and it didn’t, but then about a 1 minute later my eye’s started watering from out of no where. So after the second test it took 1 minute and 52 seconds until my eye’s watered.

When I cut the onion when it wasn’t frozen or boiled, the result was exactly what I had expected it to be like. I cut the onion in half and nothing happened but then when I started to chop it into tiny little pieces my eye’s started to water all of a sudden. When it happened I thought that it was about the time that thought that it would happen. After 1 minute and 22 seconds or 82 seconds after I started cutting the plain onion my eye’s watered.



Freezing and Boiling Onion

**Introduction:** I have chosen this topic because every time I am cutting onions in the kitchen my eye’s alway’s start to water. I put on sun glasses on but it still doesn’t work. So I decided to see if by freezing an onion or by boiling an onion and then cutting it, if your eye’s still water.

**Aim:** My aim is to find out if by freezing an onion in a freezer and if you put an onion in boiling water and then cut an onion will your eye’s still water.

**Hypothesis:** I think that by boiling the onion in a bowl of boiling water will stop your eye’s from watering the best because I think that the boiling water will heat the onion so much that it becomes almost dead and it won’t be able to make your eye’s water.

I think that by freezing an onion in the freezer it won’t work because I think that it will make the onion make your eye’s water even more from the cooling effect of the freezer.

**Method:**

Materials: 2 Onion’s Knife <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">Bread Board <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">Freezer <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">Jug <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">Water <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">Stop Watch <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">Camera <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">Bowl <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">Tin Foil

<span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">Steps

<span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">Boiling Onion

<span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">1. Get the materials ready for the test. <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">2. Peel the skin off of one of the onion’s. <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">5. Continue to watch the bowl of hot water and if the temperature is dropping boil the jug again and then quickly tip old water out and put new water in. (Continue doing each time temperature drops low.) <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">9. Put the results together so it can be charted.
 * 1) <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px;">Boil the jug until ready and poor into a bowl.
 * 2) <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px;">Put the onion into the boiling water and start the stop watch. Place tin foil over the bowl as soon as the onion is in the water to trap the heat.
 * 1) <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px;">When the 2 hours is up take the tin foil off of the bowl and tip the water out and then put the onion on the bread board.
 * 2) <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px;">Cut the onion into small pieces and keep face in a similar position.
 * 3) <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px;">Continue Cutting until onion is completely cut and then continue to look at the onion for 30 seconds.

<span style="font-family: Helvetica,helvetica,sans-serif; font-size: 12px; line-height: normal;">Freezing Onion

<span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">1. Get the materials ready for the test. <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px; margin: 0px;">8. Put the results together so it can be charted.
 * 1) <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px;">Peel the skin off of one of the onion’s.
 * 2) <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px;">Place onion in the freezing and start the stopwatch.
 * 3) <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px;">Check the onion regularly to make sure the onion is getting cold.
 * 4) <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px;">When the 2 hours is up take onion out of the freezer
 * 5) <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px;">Cut the onion into small pieces and keep face in a similar position.
 * 6) <span style="font: normal normal normal 12px/normal Helvetica; letter-spacing: 0px;">Continue Cutting until onion is completely cut and then continue to look at the onion for 30 seconds.

<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;">**//Good start to your Science Fair Kyle, I am interested in seeing your results. Please begin your experiment as soon as possible.//**