GCSE Physics – Pressure in liquids

Last updated: 11/05/2020
AQA GCSE Science – Combined science higher Forces GCSE Physics – Pressure in liquids

Learning Objectives

-I can calculate the pressure at different points in a liquid
-I can describe the factors which cause an object to either sink or float
-I can use, rearrange and recall the units needed for p = hρg
-I can describe how the atmosphere around the Earth changes as the distance from the Earth changes

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  1. Current
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  1. What is true about the pressure in a liquid?

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  2. Why does the pressure in a liquid increase as you go down?

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  3. What happens as depth of liquid increases?

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  4. What are the units for height of the column?

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  5. What is the equation for pressure of a column of liquid?

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  6. What is the symbol equation for pressure?

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  7. What is the symbol equation for density?

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  8. What does the symbol h mean?

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  9. What does the symbol ρ mean?

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  10. What is the symbol for gravitational field strength?

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  11. What are the units for pressure?

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  12. What are the units for height?

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  13. What are the units for density?

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  14. What are the units for gravitational field strength?

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  15. What is the value of gravitational field strength on Earth?

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  16. The density of water is 1000 kg/m3^3. Calculate the pressure at the bottom of a dam 12m deep. Gravitational field strength = 9.8 N/kg.

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  17. Calculate the increase in pressure of a stone as it sinks from 1 m to 6 m. The density of water is 1000 kg/m3^3 and gravitational field strength = 9.8 N/kg.

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  18. Calculate the increase in pressure of a stone as it sinks from 1 m to 8 m. The density of water is 1000 kg/m3^3 and gravitational field strength = 9.8 N/kg.

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  19. Calculate the increase in pressure of a stone as it sinks from 1 m to 11 m. The density of water is 1000 kg/m3^3 and gravitational field strength = 9.8 N/kg.

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  20. What is the pressure exerted by 2 m of water on a swimming pool? The density of water is 1000 kg/m3^3 and gravitational field strength = 9.8 N/kg.

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  21. What is the pressure exerted by 1.45 m of water on a swimming pool? The density of water is 1000 kg/m3^3 and gravitational field strength = 9.8 N/kg.

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  22. What is the pressure exerted by 4.3 m of water on a swimming pool? The density of water is 1000 kg/m3^3 and gravitational field strength = 9.8 N/kg.

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  23. Calculate the height of the water if the pressure at the bottom of a pool is 41160 N? The density of water is 1000 kg/m3^3 and gravitational field strength = 9.8 N/kg.

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  24. Calculate the height of the water if the pressure at the bottom of a pool is 98000 N? The density of water is 1000 kg/m3^3 and gravitational field strength = 9.8 N/kg.

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  25. Calculate the height of the water if the pressure at the bottom of a pool is 147000 N? The density of water is 1000 kg/m3^3 and gravitational field strength = 9.8 N/kg.

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