Grade 11 Buoyancy Worksheet
This worksheet covers fundamental concepts of buoyancy, Archimedes' principle, and factors affecting flotation for Grade 11 Physical Science.
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Grade 11 Buoyancy Worksheet
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Read each question carefully and answer to the best of your ability. Show all your work for calculations.
1. Which of the following statements best describes Archimedes' Principle?
An object immersed in a fluid experiences an upward buoyant force equal to the weight of the fluid displaced by the object.
The pressure in a fluid increases with depth.
The speed of a fluid increases as its pressure decreases.
An object floats if its density is greater than the fluid it is in.
2. A block of wood floats in water. Which of the following is true?
The buoyant force is less than the weight of the wood.
The buoyant force is equal to the weight of the wood.
The buoyant force is greater than the weight of the wood.
The density of the wood is greater than the density of water.
3. The upward force exerted by a fluid that opposes the weight of an immersed object is called .
4. An object will sink if its average density is than the density of the fluid it is in.
5. Explain why a steel ship floats while a small steel pebble sinks.
6. A 5 kg object displaces 3 liters of water when fully submerged. Will the object float or sink? Justify your answer with calculations. (Density of water = 1000 kg/m³)
7. Buoyant force always acts downwards.
True
False
8. The volume of fluid displaced by a floating object is equal to the volume of the entire object.
True
False
Match the term on the left with its definition on the right.
9. Buoyancy
a. Mass per unit volume
10. Density
b. The upward force exerted by a fluid on an immersed object
11. Archimedes' Principle
c. States that the buoyant force on a submerged object is equal to the weight of the fluid it displaces