Trigonometry And Cools Fast: Sand Or Water?
Question: Which heats and cools faster: sand or water?
Hypothesis: The hypothesis is that sand will heat and cool more quickly than the same amount of water placed under the same conditions. This is because water has a higher specific heat capacity (4.18 J/g°C) compared to sand’s specific heat capacity (0.29 J/g°C). The specific heat capacity is how much heat energy it takes to change the temperature of the material one degree. Since water has a higher specific heat capacity it will take more heat energy and a longer amount of time to heat and cool.
Experiment: “See lab sheet.” The control group was air. The air was the control group because it could be used for a comparison with water and sand and provide a basis for the experiment to determine whether or not the amount of time with the heat lamp on affected the results of the experiment. The independent variable was the amount of time with the heat lamp on or off, which was the source of heat. The dependent variable was the temperature of the air, water and …show more content…
sand. The hypothesis was correct. Sand did heat and cool more quickly than the same amount of water.
Analysis: In the experiment, air heated and cooled faster than sand and water.
Air had a starting temperature of 25°C. Air’s temperature increased 16°C and reached a temperature of 41°C in 30 minutes with the heat lamp on. Air’s temperature cooled 16°C with a final temperature of 25°C in 30 minutes with the heat lamp off. Water’s temperature changed the least, it started at 22°C and increased 2°C reaching a temperature of 24°C in 30 minutes. Water’s temperature cooled 1°C with a final temperature of 23°C in 30 minutes. Sand started at a temperature of 24°C. Sand’s temperature increased 10°C and reached a temperature of 34°C in 30 minutes with the heat lamp on. Sand’s temperature cooled 7°C with a final temperature of 27°C with the heat lamp off. From the two materials questioned, sand and water, sand’s temperature increased 8°C more than water in 30 minutes with the heat lamp on. Sand’s temperature also cooled 6°C more in 30 minutes with the heat lamp
off.
Conclusion: The hypothesis is that sand will heat and cool more quickly than the same amount of water placed under the same conditions. The hypothesis was correct, sand heated faster than the same amount of water. Water’s temperature increased very slowly and cooled very slowly. Within 30 minutes water’s temperature increased only 2°C and decreased 1°C in 30 minutes. Sand’s temperature heated and cooled relatively fast compared to water. Sand’s temperature increased 8°C more than water in 30 minutes and cooled 6°C more than water in 30 minutes. Sand’s greatest temperature was 34°C compared to water’s greatest temperature of 24°C, 10°C less than sand’s greatest temperature. Air’s temperature changed the fastest. Air’s temperature increased 16°C in 30 minutes and cooled 16°C in 30 minutes. Air increased 6°C more than sand in 30 minutes and decreased 9°C more than sand in 30 minutes. The reason sand heated and cooled more quickly than water is because of sand’s lower specific heat capacity (0.29 J/g°C). With a lower specific heat capacity it takes less heat energy to increase the temperature of the object, taking less time to heat the object. Water heated and cooled so slowly because it requires a lot of heat energy to change it’s temperature because of it’s higher specific heat capacity (4.18 J/g°C). One thing that went wrong in the experiment was that the heat lamp was left on for two minutes after it was supposed to be turned off. After this problem was realized the heat lamp was turned off and allowed five minutes until the next temperature reading. Since an additional five minutes was given after the heat lamp was turned off this should have changed the results very little or none. Throughout the experiment nothing happened that was unexpected. Everything complied with the hypothesis and the experiment mostly went as planned except for the one mistake in timing of the heat lamp. Another way to test the heating and cooling of sand and water is to use a hot plate to heat the materials. This would be a good experiment because a hot plate would provide a different type of heat, conduction, than the radiation heat coming from the heat lamp. The different type of heat may cause a different rate of heating and cooling among the materials tested.
Hypothesis: The hypothesis is that sand will heat and cool more quickly than the same amount of water placed under the same conditions. This is because water has a higher specific heat capacity (4.18 J/g°C) compared to sand’s specific heat capacity (0.29 J/g°C). The specific heat capacity is how much heat energy it takes to change the temperature of the material one degree. Since water has a higher specific heat capacity it will take more heat energy and a longer amount of time to heat and cool.
Experiment: “See lab sheet.” The control group was air. The air was the control group because it could be used for a comparison with water and sand and provide a basis for the experiment to determine whether or not the amount of time with the heat lamp on affected the results of the experiment. The independent variable was the amount of time with the heat lamp on or off, which was the source of heat. The dependent variable was the temperature of the air, water and …show more content…
sand. The hypothesis was correct. Sand did heat and cool more quickly than the same amount of water.
Analysis: In the experiment, air heated and cooled faster than sand and water.
Air had a starting temperature of 25°C. Air’s temperature increased 16°C and reached a temperature of 41°C in 30 minutes with the heat lamp on. Air’s temperature cooled 16°C with a final temperature of 25°C in 30 minutes with the heat lamp off. Water’s temperature changed the least, it started at 22°C and increased 2°C reaching a temperature of 24°C in 30 minutes. Water’s temperature cooled 1°C with a final temperature of 23°C in 30 minutes. Sand started at a temperature of 24°C. Sand’s temperature increased 10°C and reached a temperature of 34°C in 30 minutes with the heat lamp on. Sand’s temperature cooled 7°C with a final temperature of 27°C with the heat lamp off. From the two materials questioned, sand and water, sand’s temperature increased 8°C more than water in 30 minutes with the heat lamp on. Sand’s temperature also cooled 6°C more in 30 minutes with the heat lamp
off.
Conclusion: The hypothesis is that sand will heat and cool more quickly than the same amount of water placed under the same conditions. The hypothesis was correct, sand heated faster than the same amount of water. Water’s temperature increased very slowly and cooled very slowly. Within 30 minutes water’s temperature increased only 2°C and decreased 1°C in 30 minutes. Sand’s temperature heated and cooled relatively fast compared to water. Sand’s temperature increased 8°C more than water in 30 minutes and cooled 6°C more than water in 30 minutes. Sand’s greatest temperature was 34°C compared to water’s greatest temperature of 24°C, 10°C less than sand’s greatest temperature. Air’s temperature changed the fastest. Air’s temperature increased 16°C in 30 minutes and cooled 16°C in 30 minutes. Air increased 6°C more than sand in 30 minutes and decreased 9°C more than sand in 30 minutes. The reason sand heated and cooled more quickly than water is because of sand’s lower specific heat capacity (0.29 J/g°C). With a lower specific heat capacity it takes less heat energy to increase the temperature of the object, taking less time to heat the object. Water heated and cooled so slowly because it requires a lot of heat energy to change it’s temperature because of it’s higher specific heat capacity (4.18 J/g°C). One thing that went wrong in the experiment was that the heat lamp was left on for two minutes after it was supposed to be turned off. After this problem was realized the heat lamp was turned off and allowed five minutes until the next temperature reading. Since an additional five minutes was given after the heat lamp was turned off this should have changed the results very little or none. Throughout the experiment nothing happened that was unexpected. Everything complied with the hypothesis and the experiment mostly went as planned except for the one mistake in timing of the heat lamp. Another way to test the heating and cooling of sand and water is to use a hot plate to heat the materials. This would be a good experiment because a hot plate would provide a different type of heat, conduction, than the radiation heat coming from the heat lamp. The different type of heat may cause a different rate of heating and cooling among the materials tested.