Conclusion from Student A
EXCELLENT QUALITY
12-11-09
In this experiment, we were searching to find how evaporation, humidity, and
temperature are related. In order to find the humidity in the classroom, we made
a tool with thermometers and recorded the temperature in the classroom for 20
minutes. I predicted that the humidity in the room would be 70% because it rained
that morning adding moisture to the environment.
Based on the experiment, the humidity in the classroom was 75%, which was
only 5% higher then the original hypothesis. After taking temperatures for 20
minutes, it was clear that the wet bulb was colder than the dry bulb. Two
different thermometers were needed to figure this out. The evaporation coming
off the wet bulb made its temperature colder than the temperature in the room.
To figure out the humidity, one needs to look at the difference between the two
temperatures. Lower humidity means water will evaporate faster causing the bulb
to get cold and making the difference between the wet and dry bulb temperatures
greater. The difference between the wet and dry bulbs was 7 degrees Farenheit.
Overall, more evaporation means lower humidity in the air and a colder temperature
on the wet thermometer compared to the dry.
This procedure was acceptable, although there could be a few factors that
might change the results. One of our thermometers appeared broken, so it may
not have read the correct temperature, which would change the results. Body heat
from people sitting close to the tool may have affected the temperature as well.
In the future, I suggest this experiment be conducted slightly differently.
I would repeat this procedure on at least three different days and make multiple
humidity tools to compare my results. I would also be sure to research the daily
humidity readings from an accurate source to check how validity of the data.
Conclusion from Student B
POOR QUALITY
12-11-09
I loved doing this lab it was so much fun. My favorite part was picking
partners The bottle and thermometers helped me figure out the humidity in the
room. we used a shoelace for the wet thermometer.
This procedure was to attach three thermoters to a water bottle. First we
attached a thermometer with a shoelace wrapped around it to the outside of the
water bottle than we attached another thermometer to the other side next we
added a little bit of water into the bottle finally we put a thermometer inside the
water bottle. the temperatures were different. My lab was messed up because
one of the thermometers was broken. The other two went up and down. The
humidity in the room was 75%.
next time I do this lab I would choose diferent partner. We talked to much
and spilled water. I think that water evaporated witch made the humidity diff. I
would not change anything about this lab because I worked very hard the whole
time. I think we should do more labs in class!