Physics

Seong Hyun Park


 * How is Physics involved with Water Pollution?**
 * **Waves - Oscillations, Resonance, Frequency**
 * Lenses - Refractive Index, Rays (Electromagnetic Spectrum)
 * Water Depth affecting Velocity of Water and Time
 * Conductivity - Resistance
 * Heat (Thermal Physics)


 * Equipment and Materials:**
 * Motion Sensor x1
 * Meter Stick x 3
 * 30cm Ruler x3
 * Rubber Ball x1
 * Stop Watch x1

If the frequency of the waves are greater than it is likely the case that there will be less litter coming to the edges of the lake because if a wave passes through an object the object will not move but only go up and down. The actual force that moves the litter would be the wind (an external force), but we are not just considering the litter on the surface of the water but also the microrganisms and heavy metals that exist inside the water moved by the waves.
 * Hypothesis:**

To what extent does the speed of the waves in Tay Ho (West Lake) affect the amount of litter in the two specified regions of the lake?
 * Research Question:**

Independent Variable: Area Dependent Variable: Frequency Controlled Variables: Wave Length and Time Period
 * Variables:**


 * Diagram:**

Location A:
 * Conclusion:**
 * Slower Wave Speed
 * Low Frequency
 * Less Litter

Location B
 * Faster Wave Speed
 * High Frequency
 * More Litter