A.5.Testing the Perceived Cause
The perceived cause is the most likely factor that caused the phenomenon. The perceived cause is the variable or factor that you want to test to see if your intuition is correct. The perceived cause is based on your research and intuition and is what you believe to be the primary cause of the phenomenon. The perceived cause is the tested variable in your experiment or in scientific terms: The perceived cause is your independent variable.
The perceived cause is the most likely factor that caused the phenomenon. The perceived cause is the variable or factor that you want to test to see if your intuition is correct. The perceived cause is based on your research and intuition and is what you believe to be the primary cause of the phenomenon. The perceived cause is the tested variable in your experiment or in scientific terms: The perceived cause is your independent variable.
Step 5. Run the Experiment: Today we will run our experiment and test our independent variable so we can graph our data and evaluate our results.
Step 5. Run the Experiment: Today we will run our experiment and test our independent variable so we can graph our data and evaluate our results.
While the experiment is running you will conduct research. Set your timer to go off every five minutes. Be sure to take the initial Temperature. Follow your procedures, start your experiment.
While the experiment is running you will conduct research. Set your timer to go off every five minutes. Be sure to take the initial Temperature. Follow your procedures, start your experiment.
- Do you expect the ice with salt to melt faster or slower than the Control Experiment? (Team Discussion)
- If you expect this to happen, don’t you think you should be prepared to measure the height of melted water in the cup? Talk with your teammates to think about how you can measure the melting water every five minutes. Ask the teacher for any supplies you might need and make sure someone in your cup measures this observation every five minutes and be sure to include the initial amount of liquid water in the cup.
- Do you have to measure the amount of water melted in both, why or why not? (Team Discussion)
- What is the difference between the melting point and freezing point? Talk this through with your teammates then write your answer below. If you struggle, research this question online.
- If you did not explain what is happening to the energy in your answer to number 4, please explain what is happening to the energy at the freezing point and melting point, then extend that knowledge to what is happening to the molecules. Half your team will draw a step by step model of freezing water and the other half will draw a step by step model of melting water. (Don’t forget to write your observations every 5 minutes as well--this includes measuring the amount of melting water.
6. Data Table of Experiment: I am testing the effect that salt has on the temperature of ice over 20 minutes and observing the effects on the melting point and freezing point of water with salt in it.
6. Data Table of Experiment: I am testing the effect that salt has on the temperature of ice over 20 minutes and observing the effects on the melting point and freezing point of water with salt in it.
7. Data table of Control Experiment: I am evaluating the normal behavior and temperature of ice as it melts at room temperature in order to compare these results to the effects that my independent variable has on ice under the exact same conditions.
7. Data table of Control Experiment: I am evaluating the normal behavior and temperature of ice as it melts at room temperature in order to compare these results to the effects that my independent variable has on ice under the exact same conditions.
- Now that the experiment is done, how you will graph your data. What will you title the graph? What will be on the Y and X axes?
