Grade 6 Science Fair Project - "Road Salt - Is it the Fastest Way to Melt Icy Roads?" [sciencetechnology-center.blogspot.com]
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The purpose of this science fair project is to explore the effect of road salt placed on snowy and icy roads. The freezing point for water is 32 degrees Fahrenheit. At this temperature water freezes into ice. Road salt is placed on snowy and icy roads because the salt causes the ice and snow to melt. The chemistry behind this reaction is that salt lowers the melting point or freezing point of water. The salt acts as foreign particles in the water to help the melting process.
In this science fair project you will simulate sidewalks and roads in icy conditions. You will fill dishes with ice to represent the sidewalks and roads. You will place various materials across the ice cubes to see if and how the ice cubes melt. The various materials include: road salt, fertilizer, calcium chloride, cat litter, and sand.
Hypothesis: Road salt and the various other materials will cause the ice to melt faster than using nothing at all.
Variables: Type of material spread on ice
Materials Needed:
Six dishes that have dimensions of 9 x 13 inches Freezer available to use during the science fair project Stopwatch Water 12 ounces of road salt 12 ounces of fertilizer 12 ounces of calcium chloride 12 ounces of cat litter 12 ounces of sand Paper Pencil Camera SCIENCE FAIR PROJECT SETUP INSTRUCTIONS:Complete the following steps for this science fair project:
Setup Step #1: Pour water into each of the six dishes. Make sure that the water level in each dish is 1 inch.
Setup Step #2: Place the six dishes in the freezer. Leave the dishes in the freezer until the water has frozen to ice. You may have to leave the dishes in the freezer overnight.
Setup Step #3: Place each of the six dishes on the floor of your kitchen. You are now ready to begin the science experiment.
SCIENCE FAIR PROJECT INSTRUCTIONS:
Step #1: ;You are going to spread material onto each dish in the following manner: Dish #1: Do not spread any material across this dish. Leave this dish as plain ice only. Dish #2: Spread the 12 ounces of road salt evenly across this dish. Dish #3: Spread the 12 ounces of fertilizer evenly across this dish. Dish #4: Spread the 12 ounces of calcium chloride evenly across this dish. Dish #5: Spread the 12 ounces of cat litter evenly across this dish. Dish #6: Spread the 12 ounces of sand evenly across this dish.
Step #2: Use your stopwatch to determine how long it takes for each material to melt the ice. Record your observations. Did the road salt melt the ice the quickest? Rank the materials in order from the dish that melted the fastest to the slowest. Do you think that road salt is most effective material to use on icy roads? Why or why not?
Step #3: You may want to take pictures during the melting process. 3;Pictures will help you document your observations as well as validate your results and conclusions.
Summary of Results: The materials that were spread across each dish cause the freezing point to lower. This in effect caused the ice to melt. Road salt is used on icy roads because it is the most effective and also the safest for the environment.
Find More Grade 6 Science Fair Project - "Road Salt - Is it the Fastest Way to Melt Icy Roads?" IssuesQuestion by DesiDani: Why would someone give another responder a thumbs down in the science and mathematics section? I am not talking about people who are not knowledable in science and may slip in, but the people who are. Especially the people who have posted their credentials on their profile and have answered several questions in the SM section. How can their answers be wrong if it is pertaining to science? Edit: The reason why I am asking, is I always thought that in science and mathematics, there can only be one answer. It either is or isn't. Best answer for Why would someone give another responder a thumbs down in the science and mathematics section?:
Answer by jonmcn49
You think it is bad here, trot over to social science, ot another rigor-less site. It happens here, but the prevalence of random " thumbs down " is not great. We do have " invaders " of an ideological nature here from time to time.
Answer by realme
I give a thumbs down if an answer is wrong in science (some are or are not complete), or if an answer really irritates me. We all make mistakes - I have to admit giving at least one wrong answer but something at the back of my mind told me to go back to it and I got it fixed. No one had put thumbs down on it (in science) - I wish they had. If the answer is wrong then that is worse then getting no answer at all. It is all the more important to get the answer right if your score makes askers believe you ARE right all the time. If I see a good answer I give a thumbs up every time - I may not get to voting on it.
Answer by Frank N
Most often, because they have already ruled out the answer by non-science criteria. This happens most often with emotionally, morally, or politically charged issues like evolution, embryonic stem cell research, global warming, and so on. I have also seen answers that were just plain wrong, posted by people who should have known better, according to their claimed credentials. Sometimes most of the answer is correct but one or two parts are way off base. There, a thumbs-down is at least a red flag that the answer deserves some scrutiny.
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