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Bobbing for apples is a traditional Hallowe'en game - Junior Cycle Science - Question a - 2014
Question a
Bobbing for apples is a traditional Hallowe'en game. A large basin is filled with water and apples are put into the water. Players try to catch the floating apples w... show full transcript
Worked Solution & Example Answer:Bobbing for apples is a traditional Hallowe'en game - Junior Cycle Science - Question a - 2014
Step 1
Why do the apples float in the water?
Answer
Apples float in water because they are less dense than water. The principle of buoyancy states that if an object is less dense than the fluid it is placed in, it will float. Since the density of apples is lower than that of water, they are buoyant and remain on the surface.
Step 2
Describe, with the aid of a labelled diagram, an experiment to measure the density of an apple.
Answer
To measure the density of an apple, follow these steps:
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Find the Mass of the Apple: Use a mass or electronic balance to measure the mass of the apple. Record this value in grams (g).
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Set Up a Graduated Cylinder: Fill a graduated cylinder with water. Make sure to note the initial water level.
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Submerge the Apple: Carefully submerge the apple in the water without spilling any. If using an overflow can, this would collect the displaced water instead.
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Measure the Displacement: Note the new water level in the graduated cylinder. The volume of water displaced (the difference between the initial and new water level) is equal to the volume of the apple.
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Calculate Density: Finally, use the density formula:
ext{Density} = rac{ ext{Mass}}{ ext{Volume}}
This will give you the density of the apple in grams per cubic centimeter (g/cm³).
[Ensure your diagram includes at least one label indicating key components like the graduated cylinder and the apple.]