Activities

1. Which model would be best to use to compare data from multiple trials?
   1. Pie chart
   2. Scatter plot
   3. Bar graph
   4. Line graph
      
      
2. Based on the data displayed in the chart below, what is the average distance traveled by each toy car?
   1. Trial 1: 5.0 cm; Trial 2: 3.0 cm; Trial 3: 2.5 cm
   2. Trial 1: 5.0 cm; Trial 2: 3.5 cm; Trial 3: 3.5 cm
   3. Trial 1: 5.0 cm; Trial 2: 3.25 cm; Trial 3: 3.0 cm
   4. Trial 1: 5.0 cm; Trial 2: 3.25 cm; Trial 3: 2.5 cm

3. The data table below shows the average monthly rainfall for a given area during 2014. Make a graph that best displays the data.

4. Explain why scientific data is often presented in graphs instead of just in a list or table?

5. For her science fair project Carrie hypothesized that a sugar solution would have a higher boiling point than either water or a salt solution. Her data, as taken from her science log, is as follows:

“At 1 minute the salt solution had a temperature of 34 degree Celsius, water was 30 degree Celsius, and the sugar solution was 32 degree Celsius. At 4 minutes the sugar solution was 67 degree Celsius, the water was 65 degree Celsius, and the salt solution was 69 degree Celsius. At 8 minutes water was 100 degree Celsius, the sugar solution was 104 degree Celsius and the salt solution was 106 degree Celsius. All of the solutions were boiling at the time of the 8 minute reading.”

1. Identify the independent and dependent variables.
2. Create a chart using the data recorded in Carrie’s science log.
3. Using the data in your chart, display it in a graph.
4. Write a brief conclusion using the data.

Answer Key/Rubric

1. C
   
   
2. C

3. .

4. Acceptable responses might include, but not be limited to:
   Graphs are a good way to impress people, especially science fair judges and teachers. They look scientific, are an easy way for people to understand and compare your data, and they make you look smart.

5. Acceptable responses might include, but not be limited to:
   1. IV – salt solution, sugar solution, and water/DV – boiling point
   2.  
            

4. Based on the data collected by Carrie the salt solution had a higher boiling point than water or the sugar solution. The salt solution’s boiling point was 106 degrees Celsius which was 2 degrees higher than the sugar solution’s boiling point and 6 degrees higher than water’s boiling point. By looking at the graph one can also see that the salt solution had a higher temperature each time a measurement was taken.