Comprehension and additional task exercises pages 158 and 159 from Next Page Science KS3 Complete. Accompanying PowerPoint and word searches available for free from the website.
This exercise covers:
• How water pressure changes with depth illustrated with the pressure can
• An explanation of more layers giving a greater weight of water above with increased depth (an hence pressure)
• Archimedes principle: upthrust equals the weight of water displaced
• Pressure difference as the reason for upthrust
• Objects float when the upthrust is equal to the weight of the object
• Objects less dense than water float, more dense sink
• An exercise recognising whether objects float or sink from their density
• An exercise on apparent weight and upthrust
• A conundrum to solve on the floating orange
• Amazing WHAT? facts
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