Environmental sciences Lab-1(Wet Stones Experiment)

Method:  

• First we investigated what time to start the project since condensation level is high in the morning & therefore rocks would be wet in the morning.
• Next, we searched through the beach for wet rocks
• Different colours & sizes of rocks were collected to see the two above factors effect the temperature of the rocks.
• 25 rocks were collected by our group
• One by One rocks were kept on the Digital measuring machine & its weight were noted.
• Air temperature of the site was then measured.
• Temperature of the rocks was then known by a thermometer.
• Samples of rocks were taken back to Delhi to measure the dry weight of the stones.
• Therefore mass weight of the stones were calculated (wet weight-dry weight)

Data Collection & Processing:

Relationship between temperature & the dry weight

Conclusion:

Based on the readings above we can see that the lighter the weight of the stone is, the more dryer it is, hence heavier the stone is, the more wet it is since it can absorb more water.

Also one of the other factors that affect, while some stones are wet while others are dry on the river beach, is the fact that some stones are porous, therefore the stone will easily be able to soak up the water and hence have a higher wetness level while others may be dry.

Evaluation:

From our research and findings on this experiment we have discovered that the lighter the weight of the stone is the more dryer it is, heavier the stone is the wet it is. We could not conclude there was not any direct correlation or any evidence to suggest that a certain colour of the stones would be dryer than the other, we can conclude that the colour property of the stone does not have an impact on the wetness or dryness level. However we could have made this experiment more accurate by:

• Widening our sample range.
• By widening our time scale, for instance if we could have performed the tests at 3 different points in the day(morning, afternoon & evening we may have been able to test for temperature change having an impact on the wetness of the stones)
• If we tested the stones with a neutral PH level of water to determine the dryness or wetness and then compared it to the Ph levels of water in the river, then there may be acidity or Alkaline levels of water have an impact of the dryness or wetness.
• Collectively it would have been interesting to compare results across all teams to see if location of test had an impact on results or when the results are consistent across all teams & determine the factors that are affecting the readings on different sites.