1. In this simulation experiment, the depth of the sponge's indentation reflects:
- A. The magnitude of the force
- B. The speed of pressure
- C. The magnitude of the effect of pressure
- D. The mass of the object
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Effect of Pressure - Quiz
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In this simulation experiment, the depth of the sponge's indentation reflects:
Effect of Pressure - Quiz - Quiz Questions
Test your mastery of pressure definition, the $p=F/A$ formula, unit conversions, and real-world applications of pressure in daily life and engineering.
2. Schoolbag straps are made relatively wide to:
- A. Increase force
- B. Decrease force
- C. Increase pressure
- D. Decrease pressure
3. Regarding the pressure formula $P = F/S$, which of the following understandings is correct:
- A. Pressure P is directly proportional to force F
- B. Pressure P is inversely proportional to surface area S
- C. When S is constant, P is directly proportional to F
- D. The unit of P is Newton (N)
4. The same heavy object (such as a brick) is placed flat, sideways, and upright on a sponge. The pressure on the sponge is greatest when:
- A. Placed flat
- B. Placed sideways
- C. Placed upright
- D. The same
5. If an object weighs $50N$ and the surface area is $10cm^2$, the pressure it produces is:
- A. 5 Pa
- B. 500 Pa
- C. 50000 Pa
- D. 0.2 Pa
6. To make it easier for a nail to be driven into a wooden board, the tip of the nail should be made very sharp. This is to:
- A. Increase force
- B. Increase surface area
- C. Increase pressure
- D. Decrease pressure
7. Why is this sponge (or foam) used as the object under pressure in the experiment instead of a wooden board?
- A. Sponge is cheaper
- B. Sponge deforms easier, making it easier to observe
- C. Sponge has high friction
- D. Wooden board is too heavy
8. The physical meaning of 1 Pascal (Pa) is:
- A. 1 Newton of force on an area of 1 square meter
- B. 1 kilogram of force on an area of 1 square meter
- C. 1 Newton of force on an area of 1 square centimeter
- D. Subject to 1 Newton of force
9. When a person with a mass of $60kg$ stands, the contact area between their feet and the ground is about $400cm^2$. If they switch to standing on one foot, the pressure on the ground will:
- A. Become 2 times the original
- B. Become half of the original
- C. Remain unchanged
- D. Become 4 times the original
10. True or False: When walking on ice, if the ice is about to break, lying down immediately can prevent the ice from breaking because lying down reduces the force of the person on the ice.
- True
- False