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Why does an inflated balloon filled with air float in water?
- a)The balloon is made of rubber, which is naturally buoyant.
- b)The air inside the balloon is lighter than the water it displaces.
- c)The balloon repels the water molecules.
- d)The balloon has a rough surface, allowing it to float.
Correct answer is option 'B'. Can you explain this answer?
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Why does an inflated balloon filled with air float in water?a)The ball...
Why Does an Inflated Balloon Float in Water?
When an inflated balloon filled with air is placed in water, it exhibits buoyancy. The correct reason for this phenomenon is option 'B': The air inside the balloon is lighter than the water it displaces. Let’s break this down further.
Understanding Buoyancy
- Buoyancy Definition: Buoyancy is the upward force that a fluid exerts on an object placed in it, allowing some objects to float while others sink.
- Archimedes’ Principle: According to Archimedes' Principle, an object will float if it displaces a volume of water equal to its weight.
Air vs. Water Density
- Density Comparison: The key factor is the density of air versus the density of water. Air is much less dense than water.
- Displacement of Water: When the balloon is submerged, it displaces a certain amount of water. The weight of this displaced water is greater than the weight of the air inside the balloon, resulting in a net upward force.
Conclusion: Why the Balloon Floats
- Resulting Forces: The upward buoyant force acting on the balloon is greater than the downward gravitational force acting on it, allowing it to float.
- Lightness of Air: Since the air in the balloon is lighter than the water it displaces, the balloon remains buoyant and floats on the surface.
In summary, the air inside the balloon is lighter than the water it displaces, which is why the balloon floats!
When an inflated balloon filled with air is placed in water, it exhibits buoyancy. The correct reason for this phenomenon is option 'B': The air inside the balloon is lighter than the water it displaces. Let’s break this down further.
Understanding Buoyancy
- Buoyancy Definition: Buoyancy is the upward force that a fluid exerts on an object placed in it, allowing some objects to float while others sink.
- Archimedes’ Principle: According to Archimedes' Principle, an object will float if it displaces a volume of water equal to its weight.
Air vs. Water Density
- Density Comparison: The key factor is the density of air versus the density of water. Air is much less dense than water.
- Displacement of Water: When the balloon is submerged, it displaces a certain amount of water. The weight of this displaced water is greater than the weight of the air inside the balloon, resulting in a net upward force.
Conclusion: Why the Balloon Floats
- Resulting Forces: The upward buoyant force acting on the balloon is greater than the downward gravitational force acting on it, allowing it to float.
- Lightness of Air: Since the air in the balloon is lighter than the water it displaces, the balloon remains buoyant and floats on the surface.
In summary, the air inside the balloon is lighter than the water it displaces, which is why the balloon floats!
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Community Answer
Why does an inflated balloon filled with air float in water?a)The ball...
An inflated balloon filled with air floats in water because the air inside the balloon is less dense than water. When the balloon is placed in water, it displaces a volume of water that weighs more than the balloon itself. This difference in weight creates a buoyant force that keeps the balloon floating.
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Why does an inflated balloon filled with air float in water?a)The balloon is made of rubber, which is naturally buoyant.b)The air inside the balloon is lighter than the water it displaces.c)The balloon repels the water molecules.d)The balloon has a rough surface, allowing it to float.Correct answer is option 'B'. Can you explain this answer?
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