We did a lab.First, we had to make a hypothesis. That is an educated guess. We considered our life experiences. We agreed that the effect of ice cubes on water temperature would probably be that the water temperature would go down (decrease). We wrote the hypothesis down in our lab booklet.
Then we had to follow a procedure (plan). We used a measuring cup to measure 1 cup of water into a glass jar. We went outside to get two ice cubes (Sister Patrice had brought them from home and she stored them outside because it is colder out there than in a freezer.)
Then we used a thermometer with Fahrenheit and Celsius to take the temperature of the water. It was "room temperature." We used Fahrenheit degrees. We wrote the starting temperature on our data table.
Next we added in the ice cube. We used tongs. We started the timer. Every 20 seconds, we looked at the thermometer to see if the temperature had changed. We wrote down the temperature on our data table every 20 seconds.
We put a star on our data table when the ice was totally gone.
We had 19 data points.
Then we had to analyze the data. We used a line graph. It shows how something changes over time.
Our line graph shows how the temperature changed over time.
First we had to label the vertical axis (y-axis) and the horizontal axis (x-axis). Then we had to put the scales (numbers) on the graph. Then we put a small dot or point on it where the temperature and time in seconds matched our data chart. We used a straight edge. Sister Patrice didn't. You can tell.
Next we had to draw lines to connect the dots. That's why it is a line graph.
Then we had to answer questions about our line graph. We also had to find the mean, median, and mode. We had to figure out how much the temperature decreased (went down/ got colder). After the star (the ice was gone), we could see that the temperature then increased (went up).
After we answered all the questions, we checked to see if our hypothesis was correct. It sort of was. We didn't think about that the temperature would go back up. We made a new hypothesis that after a while (overnight) the temperature would increase back up to room temperature. We did not have enough time to test the new hypothesis because we ran out of time.
When we got all finished with the lab, we wrote up our notes. We added a diagram (picture) in the booklet. Then we glued it into our Handbook for Adulthood next to our notes on making line graphs.
