Buoyancy of ice cubes experiment (S'Cool LAB classroom activity)
S’Cool LAB (cern.ch/scoollab) is a Physics Education Research facility that offers hands-on & minds-on particle physics experiment sessions for visiting high-school students and their teachers on-site at CERN. Moreover, S'Cool LAB provides a collection of classroom activities to support tea...
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| Format: | Article in Journal/Newspaper |
| Language: | English |
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CERN
2020
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| Online Access: | https://dx.doi.org/10.17181/cds.2725636 https://videos.cern.ch/record/2725636 |
| Summary: | S’Cool LAB (cern.ch/scoollab) is a Physics Education Research facility that offers hands-on & minds-on particle physics experiment sessions for visiting high-school students and their teachers on-site at CERN. Moreover, S'Cool LAB provides a collection of classroom activities to support teachers in introducing particle physics in their own classroom in a hands-on way. This video shows one of S'Cool LAB's classroom activities: the buoyancy of ice cubes experiment Since salt (or sugar) water is denser than water, the buoyant force exerted on ice is bigger. Thus, ice cubes don’t sink as much in salt (or sugar) water as they would in water. Therefore, the level of the salt (or sugar) water rises, when the ice cubes melt, whereas it remains the same for water. This effect occurs, e.g. when the ice cubes in your sugary summer drink melt. Unfortunately, it also reinforces the negative effects of climate change: Icebergs are large chunks of ice that break off from glaciers (e.g. in Greenland). They are made of water, not salt water. Thus, sea level rises not only when icebergs drift into the sea, but also when they melt. In this video, the following material was used: Water, cold Salt (or sugar) 6 ice cubes 2 Beaker glasses, 50 ml Spoon Instructions: Fill the 2 beaker glasses half full with water Add 3-4 tea spoons of salt (or sugar) in one beaker glass and stir Put 3 ice cubes in each beaker glass Add water to the salt (or sugar) water until the liquid level is the same in both beaker glasses and stir Mark the liquid level on both beaker glasses Wait until the ice cubes have melted More information about this video and the experiment : https://scoollab.web.cern.ch/states-of-matter |
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