Group Name: Lactobacillus Class: 1B
Members: 1. Marissa Ng
2. Soh Hong Yuan
3. Nicole Lum
4. Dion Lim

Project Title: Physics

Problem Question: Which windmill blade is the most efficient?

Hypothesis: A larger windmill blade angle will be more efficient.

Apparatus and Meterials needed:
Mounting board
Sticks
Standing fan
Protractor (XL)
Long ruler
Pen knife
cardboard box

Experimental Procedure Setup:
1.Cut the mounting board into the e of 30cm x 10cm
2.Stick the stick onto the mounting board
3.Tilt it to the angle of 180 degrees
4.Poke the sticks into a cardboard box
Make sure the box can rotate freely.
5.With the fan blowing at a distance of 1metre away, time how
long it takes for it to turn 5 rounds
6.Repeat step 3 to 5 with a few different angles
7. observe the results

Independent Variable: Angle of the blade
Dependent Variable: How long it takes for the blade to turn 5 rounds
Controlled Variables (constants):
1.length of blade
2.distance of fan from blade
3.length how much of stick was poked into the cardboard box.