Here's the solution to the first 7 questions from your “Viscosity” quiz, with clear explanations for each:
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1. Viscosity can be described as...
✔ Correct Answer: B — a physical property of liquids
Explanation:
Viscosity is a measure of a fluid’s resistance to flow. It describes how thick or thin a liquid is (e.g., honey has high viscosity; water has low viscosity). It is a *physical* property because it can be observed or measured without changing the substance’s chemical identity. While gases also have viscosity, the term is most commonly associated with liquids in introductory science contexts.
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2. High viscosity can be described as...
✔ Correct Answer: B — a liquid that flows slowly
Explanation:
High viscosity means the fluid resists flow — think of molasses or cold honey. It flows very slowly. Low viscosity fluids (like water or alcohol) flow quickly.
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3. Peanut butter is an example of a...
✔ Correct Answer: A — High viscosity liquid
Explanation:
Peanut butter flows very slowly — if at all — under normal conditions. While it may seem solid, it is technically a *non-Newtonian fluid* (a type of fluid whose viscosity changes under stress), and in this context, it’s best described as a high-viscosity liquid. Option B is humorous but not scientifically accurate.
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4. What is a fluid?
✔ Correct Answer: B — A substance that has no fixed shape and yields easily to external pressure.
Explanation:
Fluids include both liquids and gases. They do not hold a fixed shape — they take the shape of their container. They also flow and deform under applied stress (pressure). Solids have fixed shapes and resist deformation.
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5. What is fluid flow?
✔ Correct Answer: A — Describes how fluids behave in their surrounding environment.
Explanation:
Fluid flow refers to the motion of fluids (liquids and gases) and how they interact with their surroundings — including how they move through pipes, around objects, or under gravity. It does not refer to behavior when frozen (that’s solid-state physics) or only when heated.
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6. Which of these are fluids?
✔ Correct Answers: B — Water, C — Oxygen
Explanation:
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Water = liquid → fluid
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Oxygen = gas at room temperature → fluid
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Rocks = solid → not a fluid
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Sand = granular solid (though it can *flow* like a fluid under certain conditions, it’s not classified as a fluid in basic science)
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*(Note: In advanced physics, sand can exhibit fluid-like behavior, but for this level, it’s considered a solid.)*
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7. What is Viscosity?
✔ Correct Answer: B — A fluid’s resistance to flow
Explanation:
This is the standard definition. Viscosity quantifies how much a fluid resists deformation or flow. High viscosity = high resistance to flow. Low viscosity = low resistance (flows easily).
*(Note: The question cuts off, but based on common phrasing, option B is the correct choice.)*
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✔ Final Answers Summary:
1.
B
2.
B
3.
A
4.
B
5.
A
6.
B, C *(if multiple selections allowed)*
7.
B
Let me know if you’d like help with questions 8–18 too!
Parent Tip: Review the logic above to help your child master the concept of viscosity worksheet.
