Pressure Quiz
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5 questions, one answer each
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1. What is the correct definition of pressure?
- A. Force per unit area
- B. Force multiplied by area
- C. The total amount of force acting on an object
- D. The density of a substance divided by its mass
2. A force of 600 N is applied over an area of 0.5 m². Calculate the pressure.
- A. 300 Pa
- B. 1200 Pa
- C. 0.0008 Pa
- D. 600 Pa
3. A woman wearing high heels exerts the same force on the ground as a person wearing flat shoes, but the woman's heels have a much smaller contact area. Why does this create greater pressure?
- A. Because the force is concentrated over a smaller area
- B. Because heels are made of a denser material
- C. Because the woman is moving faster
- D. Because pressure increases with height
4. Which statement correctly describes how pressure changes with depth in a liquid?
- A. Pressure remains constant at all depths regardless of the liquid's density
- B. Pressure increases with depth, and this increase is greater in denser liquids
- C. Pressure decreases with depth because the weight of liquid above is reduced
- D. Pressure only depends on the temperature of the liquid, not its depth
5. The pressure increase beneath the surface of a liquid is 25 000 Pa at a depth of 2.5 m. If the density of the liquid is 1000 kg/m³ and g = 10 m/s², calculate the actual depth below the original reference point.
- A. 1.0 m
- B. 2.5 m
- C. 2.5 m (this is correct as the depth is already given)
- D. 4.0 m