Science



☒ 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:**

Excellent Science Fair Morgan, this is a very relevant and interesting experiment to do. I am glad that Sand was the best foundation for building because I had to pay thousands of dollars to have soft clay taken away and sand brought in when I was building my house! Remember to include the 'Science' behind your experiment e.g. Why was sand the strongest? did the sand particles compact together? or could it not absorb the water? I got really anoyed when I was waiting for two minutes before adding the next bit of water. I didn't enjoy doing, plus all the waiting around and mum and dad saying what I should but i sid "no I don't wan't extra work I just won't it over and done with" __**Introduction:**__ I am interested in the foundation of houses because of the christchuch earthquake that has just happend so i can see what is the best to build you house on.
 * Teacher Comment:**
 * Student Comment:**

__**Aim**__ My aim is to see what soil is the best to build your house on if there is an earth crack.

__**Hypothesis**__ I think that the sand will take the longest to sink the bricks because the sand when it is wet it joins to together and becomes a solid. I think the dirt will take the shortest amount of time to sink the bricks because when dirt gets wet dirt just get mucky and oozy so the bricks will just sink.

__**Method**__ The materials required for this science fair project: - 1 pail of sand - 1 pail of clay - 1 pail of loam - Tap water - 1 measuring jug (able to measure 100ml) - 3 bricks - 1 black marker - 1 ruler - 1 stopwatch Procedure 1. For this science fair project, the independent variable is the type of soil used – sand, clay and loam. The dependent variable is the amount of water required for the brick to sink. This is determined by counting the number of times 100ml of water is poured into the pail containing the brick and soil. The constants (control variables) are the amount of soil in the pail, the weight of the brick and the sinking height of the brick. 2. Fill each pail to 90% of its height with a different type of sand. Stack the 3 bricks on top of the sand in one of the pails. 3. Draw a line 30mm from the bottom of the bricks using the marker and the ruler. This line will mark the sinking of the brick in the soil during liquefaction. 4. Pour 100ml of tap water into the sand using the measuring jug. Allow the sand to absorb the water for 2 minutes. Then, add another 100ml of water to the soil. Repeat this procedure until the bricks sink 30mm or collapse in the sand. Record the number of times water was added to the soil. Calculate the amount of water used and record it in the table given below. 5. Repeat steps 2 to 4 for the remaining pails.

**//Excellent start to your Science Fair Morgan, I am interested in seeing your results. Please begin your experiment as soon as possible. Please include an introduction you could finish the one I started for you if you like.//**

__**Conclusion**__ The hypothesis that the sand will require the most water is true.In my experiment I found that the bucket with clay in only took 600mls before the brick sank, the Top Soil only took in 700mls for the brick to sink and the bucket with sand took the most water at 900mls to sink the brick.