How Much Salt Needed For An Egg To Float In Fresh Water

No issues Abstract Of course it can, you say: ice is water and ice floats! And you're right. But we're talking about water in the liquid phase (the title reads better without getting overly specific). So how about it? Can liquid water float on water? Check out this project to find out. Objective The goal of this project is to investigate what happens to layers of water with different densities. You will investigate density differences caused by both temperature and salinity. Credits Sources Staff, date unknown. "Salinity and Deep Ocean Currents," Bigelow Laboratory for Ocean Sciences [accessed May 4, 2006] http://www.bigelow.org/shipmates/deep_currents_standards.html. GourmetSleuth.com, 2001. "Gram Conversion Calculator," GourmetSleuth.com [accessed May 4, 2006] http://www.gourmetsleuth.com/gram_calc.htm. Cite This Page Science Buddies Staff. "Can Water Float on Water?" Science Buddies. Science Buddies, 30 June 2014. Web. 5 Apr. 2017 <http://www.sciencebuddies.org/science-fair-projects/project_ideas/OceanSci_p002.shtml> APA Style Science Buddies Staff. (2014, June 30). Can Water Float on Water?. Retrieved April 5, 2017 from http://www.sciencebuddies.org/science-fair-projects/project_ideas/OceanSci_p002.shtml Share your story with Science Buddies! I Did This Project! Please log in and let us know how things went. Last edit date: 2014-06-30 Introduction Water covers 70% of Earth's surface. Seen from space, the blue of the oceans and the white of clouds are the dominant visual features. The water of the oceans is not uniform. Climatic processes create large-scale differences in ocean water temperature and salinity, illustrated in the first two maps, below. As you might expect, ocean waters near the equator tend to be warmer than those at higher latitudes. The first map shows sea surface temperature, coded in color (see legend). Color-coded map of sea surface temperature. The second map shows global differences in ocean surface salinity (dissolved salt concentration). At the surface, in general salinity is higher in equatorial regions and lower at the high latitudes. Color-coded map of sea surface salinity in parts per thousand (ppt or 0/00). What goes on at the ocean surface does not tell the whole story. The ocean has depth, too. In the deep ocean, huge masses of water circulate around the globe, driven by differences in temperature and salinity. This is called the thermohaline circulation, sometimes also known as the global conveyor belt. Differences in temperature and salinity cause differences in ocean water density. As water warms, it expands, decreasing density. As salt concentration rises, density increases, because the salt molecules can occupy spaces between the water molecules. Denser water sinks beneath water that is less dense. As denser water sinks, water must rise somewhere to replace it. As you are doing your background research for this project, you should read up on how the thermohaline circulation works. In this project, you will do experiments to see what happens when layers of water at different densities are brought together. You'll create your two "layers" in plastic or glass bottles, coloring them with different food colors to tell them apart. Then, you'll bring the two layers together by flipping one bottle over on top of the other (we'll tell you how to do it without spilling half the bottle!). You can see for yourself if water can float on water. Terms and Concepts To do this project, you should do research that enables you to understand the following terms and concepts: Salinity Feldman, Gene Carl and Kuring, Norman (2012, September 7) Aquarius: Sea Surface Salinity from Space. Retrieved September 11, 2012 from http://aquarius.gsfc.nasa.gov/overview.php. Wikipedia contributors (2012, August 25). Thermohaline Circulation. News Feed on This Topic   0" class="only-screen"> Note: A computerized matching algorithm suggests the above articles. It's not as smart as you are, and it may occasionally give humorous, ridiculous, or even annoying results! Learn more about the News Feed Materials and Equipment A project kit containing most of the items needed for this science project is available for purchase from AquaPhoenix Education. Alternatively, you can gather the materials yourself using this shopping list: Clear bottles with equal sized opening (4); 16 ounce (oz) is a good size. Bottles must have caps. For safety: sturdy plastic bottles work better than glass. Permanent marker Table salt (150 grams [g]) Containers for mixing and pouring solutions (2); should have larger capacity than bottles. Containers that can hold 1 liter of water work well. Stirring spoon or stirring rod Teaspoon measuring spoon Stopwatch Lab notebook Optional: thermometer. Range of at least 0-30°C Optional: towels for cleaning up spills Optional: a volunteer to help write down your observations Share your story with Science Buddies! I Did This Project! Please log in and let us know how things went. Experimental Procedure Salinity and Mixing Tip: Before you start your experiment skip down to step 8 below and practice the bottle flipping technique. This will make your experiment go much more smoothly! You'll need to keep track of which containers have salt added and which ones do not, so start by labeling your containers while everything is still dry. With the permanent marker label one mixing container and one bottle "+ salt." Label the other mixing container and one bottle "fresh." Make your ocean water by adding salt and water to the "+ salt" mixing container. How much salt and water? You decide! Here are some things to think about: The salinity map in the Introduction shows that deep ocean salinity ranges from 32 to 37.5 parts per thousand (ppt or 0/00). As an example, 32 ppt would mean 32 g of salt per 1000 g (1 liter) of seawater. You want your ocean water for this experiment to be somewhere in the 32 - 37.5 ppt salinity range to mimic ocean water. 1 teaspoon (tsp) of table salt weighs approximately 6 g. So, if you are using 1 liter containers you can add 6 tsp of salt for a total of 36 g of salt (6 tsp x 6 g per tsp =36 g), fill the containers to the top with water (32 oz is approximately 1 liter or 1000 g), mix until all the salt is dissolved and you'll have an salt solution that is approximately 36 ppt. Add tap water to the "fresh" mixing container. Optional: if you have a hydrometer, measure the density of each solution. Fill the graduated cylinder with water from the "fresh" mixing container. Put the hydrometer in, push it gently and wait until it stops bobbing up and down. Read the number on the hydrometer at the surface of the water. See Figure 1 below for details. Record the density in your lab notebook. Wipe the outside of the hydrometer dry between measurements so that you don't transfer one solution to the other. Also shake extra water out of the graduated cylinder. Repeat step 4a with the salt solution. Figure 1. The solution may come up the sides of the hydrometer slightly. If so, take the numerical reading where the solution is level across the hydrometer (dashed line in this diagram) and not where the solution rides up the sides (Qlaz, 2008; Wikimedia Commons). Add 5 drops of food coloring to each container. Use one color for "+ salt" and a contrasting color for "fresh." For example, red and blue. Note which is which in your lab notebook. (You'll want your notebook handy, but off to the side in case of spills.) Fill a "+ salt" bottle completely full with colored salt water. Fill a "fresh" bottle completely full of colored fresh water. Now comes the tricky part. You are going to invert (turn upside down) one bottle and put it on top of the other, without spilling. It doesn't matter which one you choose to flip over first, because you'll be doing the experiment both ways. It is a good idea to practice this maneuver first with plain tap water until you get the hang of it, so you don't waste your solutions. Here's how: Use the laminated card (or plastic) to cover the top of the bottle you're going to invert. Hold the bottle near the base with one hand while holding the card against the opening with two fingers of the other hand. Slowly and carefully flip the bottle over, keeping the card pressed tightly against the opening. Try not to squeeze the plastic bottle as you do this, since squeezing will push water out of the bottle. Holding near the bottom of the bottle where it is stiffer will help. Place the inverted bottle on top of the other bottle (the card remains in place, so it is between the openings of the two bottles). See Figure 2 below. Line up the two bottles so that the inverted bottle is balanced on top. Note the time, and then carefully slide the card out from between the two bottles. With practice, you'll be able to do this without spilling more than a few drops. Figure 2. Put the laminated card on top of the bottle you are going to invert (left panel). While holding the card tightly in place slowly flip the bottle and place it directly on top of the other bottle (right panel). Once the two bottles are lined up carefully slide out the laminated card and start your observations. Observe what happens to the two solutions. Write your observations in your lab notebook. (This is where a volunteer is useful. If you find it necessary to hold your bottles stable dictate your observations to the volunteer and he or she can write them down for you). Remember to the note the time as you make your observations. Make an observation every minute for at least 10 minutes. Here are some things to look for: Do you see any evidence of mixing (e.g., color changes, or schlieren lines)? Note: schlieren lines are wavy lines caused by changes in the index of refraction of the solution. Since the two solutions have different densities, they will also have different indices of refraction. Where the two solutions mix, schlieren lines may be apparent. You may have seen schlieren lines before on a hot summer day in the air over hot asphalt pavement. In this case the lines are the result of rising hot air mixing with cooler air above. How does the color of solution in each bottle compare to the original color? Is the color uniform throughout each bottle? Note anything else of interest. Optional: if you have a hydrometer, measure the density of the water in each bottle at the conclusion of the experiment. Confirm your results by repeating the experiment. You should perform at least three trials with salt water in the top bottle and fresh water in the bottom bottle, and at least three trials with fresh water in the top bottle and salt water in the bottom bottle. Temperature and Mixing In the second experiment you'll investigate the effect of water temperature on mixing. This time, you'll use fresh water in both bottles. Label your mixing containers "hot" and "cold." Add hot tap water to one container, and cold tap water to the other. (Note: since you are bound to spill some water, make sure that the "hot" water is not so hot that it would scald.) Optional: if you have a thermometer, measure the temperature of each solution. Rinse off the thermometer and wipe the outside dry between measurements so that you don't transfer one solution to the other. You can also measure the density of each solution with a hydrometer, if you have one. Add about 5 drops of food coloring to each container. Use one color for "hot" and a contrasting color for "cold." For example, blue and yellow. Note which is which in your lab notebook. (You'll want your notebook handy, but off to the side in case of spills.) Completely fill a "hot" bottle with colored hot water. Completely fill a "cold" bottle with colored cold water. Follow the instructions above (step 8 in Salinity and Mixing) for inverting one bottle over the other. As before (step 9 in Salinity and Mixing), observe what happens to the two solutions. Write your observations in your lab notebook. Remember to the note the time as you make your observations. Optional: if you have a thermometer, measure the temperature of the water in each bottle at the conclusion of the experiment. Measure the density of the solution in each bottle if you have a hydrometer. Confirm your results by repeating the experiment. You should perform at least three trials with hot water in the top bottle and cold water in the bottom bottle, and at least three trials with cold water in the top bottle and hot water in the bottom bottle. For your presentation, think about how your results relate to mixing of ocean water when currents carrying water at different temperatures or salinities meet. Alternatively, you might want to try relating your results to estuaries, where fresh water flowing from streams and rivers meets the ocean and its tides. Troubleshooting Share your story with Science Buddies! I Did This Project! Please log in and let us know how things went. Variations Try different colors (e.g., lighter color for denser fluid and vice versa). You may notice fluid movements that you missed previously. Try varying the salt concentration. For example, if you cut the amount of added salt in half, is mixing time affected? What do you think will happen? Try intermediate temperatures. What do you think will happen to mixing time? What do you think would happen if you tried warm salt water over cold fresh water? Try different temperatures of salt water. To make sure that the salt concentration is equal, start with a single salt water solution (make enough to more than fill two bottles). Split the solution in half. Add dye to each half. Chill one of the solutions in a tightly-covered container in the refrigerator or freezer. Warm the other solution on the stove using very low heat. The solution should not become too hot to touch. Keep it covered so you don't lose water vapor, which would increase the salt concentration in the remaining solution. Share your story with Science Buddies! I Did This Project! Please log in and let us know how things went. Frequently Asked Questions (FAQ) If you are having trouble with this project, please read the FAQ below. You may find the answer to your question. Q: Flipping one bottle on top of the other seems complicated. Will my results be affected if I just pour the water from one bottle to another using a funnel? A: If you just pour the water from one bottle to the other you will not be mimicking what happens in the oceans and your experiment will not work as intended. By flipping one fully-filled bottle on top of the other fully-filled bottle, the liquid solutions (salty and fresh, or cool and warm) can gently mix together. This mixing is done through thermohaline circulation, as discussed in the Introduction. However, if one solution is poured into the other using a funnel, or even by gently pouring, then rapid turbulent mixing will likely occur and make it difficult to observe any mixing caused by thermohaline circulation. The flip technique can be tricky but it is important to do, so it is recommended to keep practicing. Just keep practicing and you'll get the hang of it! 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How much Salt needed for an egg to float in fresh water
How Salty Does the Sea Have to Be for an … http://www.sciencebuddies.org/science-fair-projects/project_ideas/OceanSci_p003.shtml But just how much salt is needed to make an egg float? In this science fair project, you will figure that out by using the technique of making serial dilutions. Can Water Float on Water? - Science Buddies http://www.sciencebuddies.org/science-fair-projects/project_ideas/OceanSci_p002.shtml Abstract Of course it can, you say: ice is water and ice floats! And you're right. But we're talking about water in the liquid phase (the title reads better without ... Egg Float Experiment - Science.org http://www.science6.org/pdf/classroom/egg_float.pdf Egg Float Experiment • Materials: o graduated cylinders, water o bowls and tablespoons o eggs (1 per group) o container of salt (non‐iodized ... Float an Egg in the Middle of Salt Water - … https://www.youtube.com/watch?v=dkXE5ydV7eU 11/12/2012 · Vidéo incorporée · Kindergarten Science: If You Mix Salt Water and Fresh Water You Get AN EXPLOSION!!! - Duration: 2:18. BackpackingDad 68,436 views Salty Science: Floating Eggs in Water - Scientific American https://www.scientificamerican.com/article/salty-science-floating-eggs-in-water/ Apr 10, 2014 ... For example, the density of freshwater under standard conditions is approximately ... But just how much salt is needed to make an egg float? Egg as food - Wikipedia https://en.wikipedia.org/wiki/Egg_(food) Egg shell color is caused by pigment deposition during egg formation in the oviduct and can vary according to species and breed, from the more common white or brown ... Black Hen Farm -- About Eggs http://www.blackhenfarm.com/contactus.html Boiling Fresh Eggs If you hard-boil fresh eggs, they can be hard to peel. Here are solutions that some people have for this problem: See what works for you. Soaking Nuts – The Nourishing Gourmet http://www.thenourishinggourmet.com/2008/07/soaking-nuts.html If I wasn’t convinced by the opinions of researchers like Sally Fallon about the benefits of soaking grains, legumes, and nuts and seeds, my own experience would ... How bagel is made - making, history, used, … http://www.madehow.com/Volume-4/Bagel.html The bagel is a dense ring of bread, often rather bland, raised with yeast and containing almost no fat. In fact, the average bagel is about 4 oz (113.4 g) and ... How much Salt needed for an egg to float in fresh water - YouTube https://www.youtube.com/watch?v=x6M8bzV_9jw Mar 13, 2013 - 3 min - Uploaded by Sateesh NivarthiHow much Salt needed for an egg to float in fresh water.. Experiment done by Akhila for 5th ... The Egg! - Chemical/Biological http://www.chemicalbiological.net/the%20egg.html The buoyancy test for eggs measures the size of the air chamber in the broad end of the egg, and therefore its age. A fresh laid egg has a small air chamber. Egg Bagels | Brown Eyed Baker http://www.browneyedbaker.com/egg-bagels/ A few weeks ago I realized that I hadn’t made bagels in a few months and that I was long overdue for whipping up a batch. I asked my Chief Culinary Consultant if he ... Salt Water Egg Experiment - Will it Float or Sink? - Explorable.com https://explorable.com/salt-water-egg-experiment The Salt Water Egg Experiment explains why materials (such as an egg) float more in ... can float like a log with much less effort in saltwater than in fresh water. How Salty Does Water Have to Be For an Egg to Float? - Google Docs https://docs.google.com/presentation/d/1mLPEwkANMLFcNHiMDtx8tS2bXMIYfNQMNjAaCTr81mo/ Ships only float because of water density and the things that are under it. ... Independent Variable: amount of salt; Dependent Variable: the height of egg in the ... How Does Salt Water Make an Egg Float? | Sciencing http://sciencing.com/salt-water-make-egg-float-4962595.html Fill two clear glasses with lukewarm water. Pour 1 tablespoon of salt into one glass, and stir until the salt dissolves. Gently drop a fresh egg into the plain water. Egg Flotation Science Project Procedures | Sciencing http://sciencing.com/egg-flotation-science-project-procedures-5692384.html Salt water is denser than fresh water. In the egg flotation ... Similarly, calculate the amount of salt needed to completely float the egg. Compare the final amount ... Make an egg float in salt water - Fun Science Experiments for Kids http://www.sciencekids.co.nz/experiments/floatingeggs.html Make an egg float in salt water Enjoy fun science experiments for kids that feature awesome hands-on projects and activities that help bring the exciting world of ... Floating Egg - Science Fun http://www.sciencefun.org/kidszone/experiments/floating-egg/ Keep adding more salt until the egg floats. 3. Next, carefully pour more fresh water until the glass is nearly full (be careful to not disturb or mix the salty water with ... How much salt do we need in water to make an egg float http://scienceline.ucsb.edu/getkey.php?key=4383 How much salt we need to add will vary from egg to egg, since the density of each ... can float in saltwater is that saltwater has a higher density than freshwater .
How much Salt needed for an egg to float in fresh water How much Salt needed for an egg to float in fresh water

Commentaries "How Much Salt Needed For An Egg To Float In Fresh Water"

How much salt is necessary for an egg to become neutrally buoyant? Sort by
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Science Fair Project Ideas..? HELP!? Salt water is more... an object is immersed in a fluid, it ...fluid equal in volume to its own...In order to float in a stable position...drift, the object needs to "peak&quot...
Smoking Fish? 2 Answers · Science & Mathematics · 17/01/2011
How long to exercise for....to lose weight? So the question is "How much salt is necessary to float an egg?" The control would be fresh water. Your experimental groups would various concentrations of salt.
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how to brine a turkey? ... you need to look up is...specific gravity of pure water, an egg, and salt water. The...mostly water except for the shell will be...salt you dissolve in the water, the...egg, so the egg floats. Pure...
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