how salty is the sea science project

Which samples had the most salt? Our top priority is student learning. Make a stock solution of 1 cup of salt dissolved in 5 cups of water, as follows: Pour 3 cups of water into your large container. That means if you have a 1 ppt salt solution, then if you filled up a 1 liter water bottle, it would have about 1 gram of salt inside. Overall, how would you rate the quality of this project? What amounts of stock solution and water do you need to use? You may print and distribute up to 200 copies of this document annually, at no charge, for personal and classroom educational use. Measure out 3/4 cup of the solution from cup 3 and add it to cup 4. "How Salty is the Sea?". In 1979, Robert and a team of National Geographic explorers were researching the Pacific Ocean. More. Can You Remove Fluoride By Boiling Water? You can grow salt crystals by using kitchen supplies. Taste the ice. The salt should be completely dissolved before you go on to the next step. By repeating the process, you can make a whole series of dilutions, which is how the method got its name. miamianmllvr said: Proceeds from the affiliate programs help support Now you know, within a factor of 2, how much salt it takes to float an egg. . In the "How Salty is the Sea?" Repeat this step with the four other eggs. approximately 1 gram (g) per cubic centimeter (cm3). You can buy a Brine Shrimp hatchery at your local pet store to hatch and rear the brine shrimp. found at Gift of Curiosity are licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 In which cup did the egg float first? Seawater is usually somewhere between 30 and 35 ppt, which means that a 1 liter bottle of seawater would have 30–35 grams of salt inside! From the results of your experiment, predict whether an egg would float or sink in sea water. The story begins with Hengikjoptr, a Danish giant who dug up two large rocks from the ground. The friendly giant was very happy to help, but in stretching out his legs to make a bridge, he accidentally put his foot on an anthill and the ants climbed up his leg and started to bite him. There are so many questions to ask and predictions to make with this easy saltwater density science activity. What is the difference in salinity between salt water and fresh water aquatic environments? Next you will need to evaporate the water in the jars. In the hydrothermal vents the atmospheric pressure is so great that water doesn’t even boil at 400°C (750°F). Disclaimer: This will take roughly 24-36 hours depending on your oven and the volume of water. Or, bake all of the jars in the oven at a very low temperature (200°F) until the water has evaporated. Amazon.com, We talked about how ocean water is salty but the water we drink everyday is not. Use Google Earth to locate the two maelstroms (whirlpools) in Scotland and in Norway. National Earth Science Teachers Association. What is your enthusiasm for science after doing your project? Then you can expose the brine shrimp to water samples of different salinities. What was the most important thing you learned? Write the weight in grams in your data table. Terms and Concepts… (If you do not have enough solution from the original serial dilution, make some more by starting from the stock solution.). Excellent, What is your enthusiasm for science after doing your project? ( Log Out /  Then measure the amount of water in liters (L) by pouring it into a large, metric liquid measuring bowl. Why the Sea Is Salty . Are Icebergs Made of Freshwater or Saltwater? Stir to dissolve the rest of the salt. Now divide the amount of salt in grams by the amount of water in liters, and this will give you the salinity, or concentration of salt, of the sample measured in grams per liter (g/L). Oceanographers are scientists who study the ocean. should use relatively more water; if you want smaller steps, you should use relatively less water. Salt happens to be very soluble in water compared to other substances, like sugar for example. Subtract the weight of the empty jar (step 5) from the final weight of each jar you filled with a water sample. How can you narrow down the range further to get a more precise estimate? name. What you are really asking is how much salt is dissolved in the water, called salinity. They discovered something very odd; the sea became HOTTER, the DEEPER they went. Try one of our science activities for quick, anytime science explorations. For another way of looking at salt water density, see the Science Buddies project. He developed maps that advanced ‘cartography’ (the study and practice of making maps). There are several ways to do this: Arrange all of your jars on a cookie sheet and carefully place them in a sunny location. In this science fair project, you will figure that out by using the technique of making serial dilutions. salt is an amazing thing to work with. If they are not full, you will need to remove some water from a few of the jars until the water level for all of the jars is the same. As the amount of salt in the water increases, so does the index of refraction. By collecting water samples from different bodies of water and evaporating them, you can find out how much salt there is in an ocean, lake, bay, or stream near your city. Very soon, the boat was overflowing with salt, but Sea King Mysingr would not listen to Fenja and Menja or let them stop Grotti grinding the salt, and soon the boat began to sink. The ability of something, like the egg, to float in water or some Icebergs that float in the sea don't become contaminated with salt … Ask an Expert Related Links. So one night, they asked ‘Grotti’ to grind them an army to kill King Frodi. If the egg floated in more than one cup, did you notice any difference in. You may print and distribute up to 200 copies of this document annually, at no charge, for personal and classroom educational use. Estuaries are commonly found at the mouths of rivers and deltas, and act as a kind of nursery for the ocean. When you freeze ice out of saltwater or seawater, you're essentially forming a water crystal. It helped me. Write the weight in grams in your data table. Proceeds from the affiliate programs help support Sea salt can be harvested from seawater and used for cooking and eating. Figure out a new serial dilution with smaller steps. Then write the date, time, and place that you collected your sample on the jar with a permanent marker. This is called a two-fold dilution. Measure out 3/4 cup stock solution, and add it to cup 2. Physics and Chemistry of an Explosion Science Fair Project Idea, How to make an anemometer (wind speed meter), How to Make an Archimedes Screw - STEM Activity. Choose some freshwater sites (lakes, rivers, streams, springs, etc.) You will be collecting several samples from different locations and making measurements during this experiment. When something can dissolve in water we say that it is soluble. Can you suggest any improvements or ideas? for your study. Change ). He called the mill ‘Grotti’ which means ‘the crusher’. Cup 1 will be for the stock solution, cups 2-4 will be for the dilutions, and cup 5 will be plain tap water. What would you tell our sponsors about how Science Buddies helped you with your project? Write up your new dilution procedure in your lab notebook, including the calculated relative and absolute salt concentrations for each cup. Jameco Electronics. If you have any comments (positive or negative) related to purchases you've made for science projects from recommendations on our site, please let us know. Hengikjoptr gave the rocks as a gift, to King Frodi; the King of Denmark and great, great grandson of Odin, King of the Gods. Here you can read all about salt, what it is made of, where we get it and what we use it for: Glass canning jars, 16 oz (3 per location you want to test), available from, Metric scale (range up to 3000g and 0.1g precision); available from, Distilled water, found in the bottled water section of most grocery stores. What is the difference in salinity between salt water and fresh water aquatic environments? ρ = Density in whatever units are used for mass and volume. Read more. When something can dissolve in water we say that it is soluble. National Earth Science Teachers Association. Jameco Electronics. In the new empty jar, fill the jar with distilled water to the same level as the other jars. You’ll find a link to “I Did This Project” on every project on the Science Buddies website so don’t forget to share your story! How to Calculate Density - Worked Example Problem, Why Does Salt Melt Ice? Allow it to partially freeze. Make a bar graph of your data to compare the salinity of each water sample. What was the most important thing you learned? 2019-02-07 17:49:03, What was the most important thing you learned? Do an experiment using a very simple salt water organism, the Brine Shrimp, to see what effect changes in salinity can have. Please log in (or create a free account) to let us know how things went. The friendly giant saved the people from the ocean, but the salt was lost forever. Stir to dissolve some of the salt. At sea level, water boils at 100°C (212°F). Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. From that day on, the sea was salty. Subtract the weight of the empty jar (step 5) from the final weight of each jar you filled with a water sample. One idea is to use an old T-shirt as a simple filter. The crystal lattice doesn't make much room for salts, so you get ice that is purer than the original water. It will be the total volume of liquid you collected from each site. In this experiment you will learn a simple way to measure the amount of salt in a sample of water by using evaporation. Grotti and the two giantesses Fenja and Menja, or witches Grotti Finnie and Grotti Minnie as they are called in Orkney folklore, are said to be the reason for ‘the Swelchie’, a treacherous whirlpool that sinks ships along the northern coast of Scotland. Put the water in your freezer. Very high, Compared to a typical science class, please tell us how much you learned doing this project. Will an egg float or sink in salty water? Science Buddies Staff. Are there any other folklores to explain ‘why the sea is salty’? ‘hydrogen’. Try one of our science activities for quick, anytime science explorations. The two main types of aquatic environments are freshwater habitats (lake, river, pond, stream) and salt water habitats (ocean, gulf, sea, bay). Try repeating the experiment taking measurements with a refractometer. Today we explore some of the reasons why the sea is salty. Write this measurement down in your data table. These whirlpools are said to be the cause of ships being sucked into them, because Grotti is still grinding the salt. For a more advanced project idea on the index of refraction, see the Science Buddies experiment. What would you tell our sponsors about how Science Buddies helped you with your project? Science Buddies participates in affiliate programs with Collect. A serial dilution is a method for accurately diluting a solution in regular steps. What is your enthusiasm for science after doing your project? Make the new dilution series. (2020, June 23). #science project, students explore a way to measure the amount of salt in a sample of water by using evaporation. You can make your own homemade "seawater" and freeze it to make sea ice. Make a bar graph of your data to compare the salinity of each water sample. Robert’s team changed our understanding of the universe forever. All rights reserved. In England in the 1700s, there was a man named Edmond Halley. Determine what salt concentration will float an egg. This knowledge could help us to find lifeforms on planets like Mars. The next sighting of Halley’s Comet will be in 2061. Seawater is usually somewhere between 30 and 35 ppt, which means that a 1 liter bottle of seawater would have 30–35 grams of salt inside! After the jars have dried completely, weigh each jar in grams, and write the weight in grams in the data table. One day the ocean was too rough for the people to cross, so a little child asked the giant if he would mind stretching out his legs so the people could walk across instead. The giant was itching from the ants biting him, so he asked the people to hurry.

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