Science

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

☑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 ☒Has supporting documentation, bibliography, acknowledgements
 * Log Book:**

Thanks Eden, I'm sure you had fun doing your Science Fair. Your project was well structured and easy to follow. It was good that you included the 'science' behind why the different packaging material cushioned the impact for the egg. Remember that the presentation of a display is from left to right & always try and include technical language in you explanation.
 * Teacher Comment:**


 * Student Comment:**
 * I enjoyed doing my science fair although writing up the results was the least entertaining part. I thought the egg drop test was a brilliant idea (and thats being modest) and it was a pleasure experimenting with the theory**

__**Monday 23 May 2011**__

My hypothesis was that the bubble wrap would protect the egg the most and I was right at least one egg broke with every other kind of packaging I used except with the bubble wrap. The reason the egg did not break

Eden I can not proof read & edit your Aim, Method & Hypothesis if it is not here! 10.05.2011

__**aim**__ The aim of this experiment is to determine which kind of packaging keeps a fragile object the safest when dropped from heights up to 2.5 meters

__ **Introduction** __ A common annoyance with postage is fragile objects getting broken. I have decided to try and solve this problem by testing different kinds of packaging such as bubble wrap, Styrofoam and newspaper.

__ **Hypothesis** __ My hypothesis is that the bubble wrap will protect the egg the most because I think that the bubbles on the wrap will pop and the egg will not break. I think that Styrofoam will protect the egg the least because it is very hard and is not soft enough.

__**Materials:**__ Eggs Cardboard box Ladder __**Method**__ 1.I'm going to get a cardboard box and different kinds of packaging i'm also going to put an egg in the box. 2.Then I'm going to get a ladder and drop the box several times from the top of this ladder. using different kinds of packaging. 3.Then I will asses which kind of packaging was the best and which was the worst.

**Thank you Eden, this will be an interesting experiment. Please start your experiment as soon as possible so that you can start writing up your results at school. Some things to think about, how are you going to assess the damage to the egg? (you will need some criteria for this). You will also need to use similar amounts of packaging e.g. if one is loose and another tightly packaged it might make a difference to the results.**



Learning Intentions:

1. To become familiar with //chromatography// and be able to apply it to 'real life' situations.

2. To perform 'fair tests' in Science identifying substances and fibres.

3. Identify and group fingerprintsinto 3 main categories: Arch, Loop and Whorl.

4. Set up and carry out Scientific Experiments following the correct process of; Aim, Equipment, Hypothesis, Method, Results and Conclusion.

5. Work collaboratively with peers to solve problems using the skills learnt.

Lesson One - Paper Chromatography

Chromatography is a technique used for seperating mixtures. In all of the variations of Chromatography, a substance is placed onto or into a medium and then a solvent passes through the test substance, some of the test substance may be attracted to the solven and follow it up in the medium. Different types of molecules are transported different distances, causing them to seperate. In these activities, filter paper is the medium, solvent is the solvent and black ink is the test substance. Chromatography is used in crime labs to seperate the components of 'clue' substances such as blood, ink or other mixtures found at the scene of a crime. Chromatograms of these clue substances are then compared with those of the suspected sources.

__Chromatography Monday 9th May 2011__

__L.I__ I am learning the process of the chromatography and use this to assist with solving the crime.

__Aim:__ To use chromatography to distinguish which pen was used in the ransom note.

__Hypothesis:__ I think that The casaid will be the pen because it looks the same.

Black marker x5 Casade marker x14 Sharpie x3 Vivid x4

__Equipment -__ Beaker, felt pens, ransom note, filter paper, water, hand lens, masking tape and straws.

Method:

1. Gather samples of pens. 2. Draw a line across a strip of filter paper, 1-4cm from the bottom. 3. Attach to straw with masking tape. 4. Put filter paper in beaker, making sure the ink is at least 1-2cm above the water. 5. Observe. 6. Remove filter when water has travelled about 3/4 of the way up the strip. 7. Compare results with the ransom note results.

Results - 1. Black Ballpoint Pen 2. Vivid 3. Cascade marker 4. Sharpie 5. Black marker

Reflection - (write here what you have learnt during this lesson).

__Lesson Three - Kitchen Chaos Wednesday 11 May 2011:__

The kitchen cupboard has got very damp and the labels have fallen off some of the containers. From the label scraps it is found that there is:

Icing sugar baking soda salt cream of tartar cornflour

TASK - Make order out of chaos

Use a series of simple tests and good observations to find out what substance is in each container.

Caution: You are not allowed to taste them! Please use small quantities.

Aim: to find out what the substance is by carrying out a series of simple tests.

Hypothesis: I think that the substance in the different containers is;

Substance A - cream of tartar Substance B - baking soda Substance C - icing sugar Substance D - flour Substance E - coolio

Equipment - Five containers with the different substances labelled A, B, C, D, E. - Eyedroppers - Vinegar - Magnifying Glass - Litmus Paper (red and blue) - Iodine

CLUES TO HELP YOU.......................

1. Cream of tartar is an acid, and turns blue litmus paper red. 2. Cornflour and sugar are neutral and don't affect litmus paper. 3. Salt and bicarbonate of soda are alkaline, that is they turn red litmus paper blue 4. Bicarbonate of soda fizzes when mixed with vinegar. 5. Iodine changes from yellow-brown to blue-black with cornflour. There are many different ways of telling the differences between substances. You could: * Smell them carefully. * Compare the way they dissolve in water. * Examine with a magnifying glass. * Test the acidity with litmus paper. * Test the reaction with vinegar and iodine.

Results: Substance A is icing sugar Substance B is flour Substance C is baking soda Substance D is cream of tartar Substance E is coolio