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Un equal heating Lab

Un equal heating Lab. 89 points. Title: Unequal Heating 2pts. Hypothesis: 4 Pts 1. Which material will heat faster: sand, water, air or air with plastic wrap? 2. Which will cool faster?. Procedure: 10 Pts.

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Un equal heating Lab

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  1. Un equal heating Lab 89 points

  2. Title:Unequal Heating 2pts • Hypothesis: 4 Pts • 1. Which material will heat faster: sand, water, air or air with plastic wrap? 2. Which will cool faster?

  3. Procedure: 10 Pts • Set up 4 containers of equal size with the sand, water, air or air with plastic wrap. You must design a controlled experiment to test which will heat the fastest and cool the fastest for a total of 20 minutes. (10 minutes of heating and 10 minutes of cooling) Some things to consider: same amount of material in them and place them equal distance from a heat source/lamp. Place a thermometer in each that is equal distance from the lamp and inserted in the substance at the same angle and depth. Start with an initial temperature and then turn on the lamp. Record the temperature at regular intervals for a total of 10 minutes. Turn off the lamp and continue to record the temperature for about 10 minutes. Make a graph of the data. • Draw a diagram of your design for the set up. • Write down the specific items that you did to control your experiment so that you had only one independent variable.

  4. Sand temp Water temp Air temp Air with plastic wrap temp Time Initial temperature 10 min w/ light on 10 min w/ light off

  5. Data chart 22 points • Make a class data chart. • Answer the questions based on the class data. NOT on your own groups data! • Make a graph of the class data. • Show your group data on the same graph.

  6. Class Data

  7. Graph 23 pts • Graph the class data ( the average) • Title, label each axis (time on X temp on Y), key, points, light on/off marker, must be size of full page of graph paper • (7 items) • Also graph your own groups data on the same graph. Use a different color so it can clearly be seen as different from the class data! ( 7 items)

  8. Data Analysis 14pts • 1. How much did each substance increase in 10 minutes with the light on? sand, water, air, and air with plastic 4pts • 2. How much did each substance decrease? sand, water, air, and air with plastic 4pts • 3. Put the substances in order from the greatest increase to the least increase in temperature.1pt • 4. Put the substances in order from the greatest decrease to the least decrease during the “cool down” phase. 1pt • 5. What was the mean temperature of the sand, water, air, and air with plastic? 4pts

  9. Conclusion: 14 pts 1. What happened to each substance and why did it happen? Use actual data to support what you say. Why did the results turn out this way? What causes this to happen? Example: The sand increased by 10 degrees in 10 minutes time and cooled off by 10 degrees in 10 minutes. This is due to the fact that… The water only increased a total of 1 degree in the 10 minutes and did not cool off at all. This was due to the … 8 pts 2. Were your hypotheses accepted or rejected? 2pts Remember you had 2 hypotheses, one for heating and one for cooling. 4. What do differences in temperatures cause to happen in the real world on a larger scale? Explain 4pts

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