#1 Proposal Form Tuesday, April 13

Project title:

How do the differences in surfaces affect the adhension of the blu-tac?

Problem question:

To investigate how the differences in surfaces of walls affect the time taken for the blu-tac to fall.

Hypothesis:

Rougher surfaces allow the blu-tac to stay on for a longer period of time than smooth surfaces.

Web address(Url) of project blog:

http://www.nuclearacid.blogspot.com/

Apparatus and materials needed:

1. 2 packs of blu-tac
2. calendar
3. measuring tape
4. weights from the science laboratory
5. weighing machine from the science laboratory

Experimental procedure setup:

1. take 5 grams of blu-tac, with the width of 1cm and the length of 1cm
2. stick the blu-tac with a weight of 2 kilograms on the wall
3. push the weight for 5 seconds against the wall then let go
4. press the start button of the stopwatch once we let the weight go and start timing
5. press the stop button when the blu-tac and the weight drop
6. record down the time taken and the surface texture of the wall on a table
7. repeat step 1-6 on different wall surfaces
8. telly the timing taken for the blu-tac to drop, distance/height where it was placed on the wall and the wall surface

Independent variable:

Surface on which blu-tac is stick onto

Dependent variable:

Blu-tac adhension

Controlled variables (constant):

1. weight of 2kg weights
2. height of the weight from the wall to the ground
3. weight of the blu-tac
4. size and shape of blu-tac
5. the position of the blu-tac sticks on the weight