Volcanoes have long fascinated humans with their immense-sometimes incredibly destructive-power and impact. Today, we are going to delve into some characteristics that make each volcano unique by looking at certain features that cause them to behave differently. Expect students to answer with a general description of a volcano as a large landmass that is prone to eruptions.) Great! I heard you mention lava, magma, eruptions and heat. What do you know about volcanoes? (Listen to student answers. Today we are going to talk about something that we all know about, but that is still a great mystery to us in many ways. Students should also be familiar with the concept of gas exerting pressure inside a closed container. Students should have a basic understanding of volcanoes and volcanic eruptions and be familiar with fluid behaviors in situations of flow and static equilibrium, understanding that these behaviors may vary based on temperature and fluid composition. Viscosity and Pressure in Volcanic Eruptions Worksheet Answers (pdf) Visit [ to print or download. (optional) projector to show the Volcano Presentation, a PowerPoint® file.Viscosity and Pressure in Volcanic Eruptions Worksheet, one per student.3 plastic drinking straws, such as a 100-pack for $7 from Ikea/Amazon.120 ml corn syrup boiled down to 100 ml to create more viscous corn syrup.100 ml each of 3 fluids with varying viscosity prepare the solutions in larger beakers (such as 250 ml or larger) and pour them into the 150 ml beakers for example, consider using water and corn syrup combined in varying proportions by volume, such as:.3 marbles or small objects that can be dropped into the aforementioned containers as an optional extension, make available additional small objects of differing size, mass or density to provide for additional experimentation.3 identical 150-ml glass beakers note that other-sized beakers, columns, graduated cylinders, small rectangular prisms, test tubes, etc., will also work-just make sure the containers are identical (for each group), each hold 100 ml of fluid and are large enough that students can drop a marble into each.(optional) 1 timer, to measure 30 seconds or less alternatively, students can use the second-hand on the classroom clock.
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