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Water pressure at work in London
In this lesson students look at the related concepts of pressure and force (pressure = Force/ Area), units used, measurement and how a large force can result from pressure acting over a given area. They will move from calculating the weight (under gravity) of a column of water or air to the pressure of this as weight over unit area. This will also bring in the idea of density.
Learning outcomes:
- Students must: explain that pressure is a measurement or calculation of force acting over a unit area and use the units of N/m2 correctly.
- Students should: relate pressure increases with depth in a fluid to the weight of the fluid above under the action of gravity.
- Students could: evaluate the result of a simple calculation of height of the atmosphere based on their existing science knowledge and understanding.
This lesson is part of a full unit covering the topics of pressure in liquids and gases and simple machines using a range of real life examples focused on the River Thames found here
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