GIZMOs : Archimedes’ Principle - Answer Key -SCIENCE 615-2022

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Vocabulary: Archimedes’ principle, buoyant force, density, displace, mass, volume, weight Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. .Why does a small pebble sink in wat... er? It sinks because its weight is greater than the weight of the small amount of water it displaces. 2. A motorboat is a lot heavier than a pebble. Why does the boat float? When we submerge a ship in water, it floats with a force equal to the weight of the liquid it displaces. Gizmo Warm-up When you place an object in liquid, the downward pull of gravity causes it to start to sink. As the object sinks, the liquid pushes back up on the object with a force that opposes gravity. In the Archimedes’ Principle Gizmo, you will see how these forces cause objects to either sink or float. 1. Check that the Width, Length, and Height of the boat are set to 5.0 cm. Drag one of the green 50-g cubes into the rectangular “boat.” CONTINUED....... [Show More]

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