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What is the main reason water forms droplets on a cold glass?
- a)Water is freezing
- b)Water vapour in the air condenses into liquid water
- c)Water evaporates from the glass
- d)Water absorbs heat
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
What is the main reason water forms droplets on a cold glass?a)Water i...
When warm, moist air comes into contact with a cold glass, the water vapour in the air cools down and changes into liquid water, forming droplets on the surface of the glass. This process is called condensation.
Community Answer
What is the main reason water forms droplets on a cold glass?a)Water i...
Understanding Why Water Forms Droplets on a Cold Glass
When you notice droplets of water forming on a cold glass, the process is primarily due to the condensation of water vapor from the air. Here’s a detailed explanation:
What is Condensation?
- Condensation is the process where water vapor in the air turns into liquid water.
- This occurs when warm, moist air comes into contact with a cooler surface, like a cold glass.
Temperature Differences
- Cold glass lowers the temperature of the air immediately surrounding it.
- Warm air can hold more moisture than cold air. When the warm air cools down at the glass surface, it can no longer hold all the moisture.
Formation of Water Droplets
- As the air cools, the water vapor condenses into tiny liquid water droplets.
- These droplets collect on the surface of the glass, creating what we see as water beads.
Why Not the Other Options?
- a) Water is freezing: This is incorrect because the droplets are not ice; they are liquid water.
- c) Water evaporates from the glass: This would not create droplets; instead, it would decrease the liquid on the glass.
- d) Water absorbs heat: This refers to the opposite process of evaporation, not condensation.
Conclusion
The main reason for water droplets forming on a cold glass is that water vapor in the air condenses into liquid water when it encounters the cooler surface. Understanding this process illustrates the principles of temperature and humidity in our environment.
When you notice droplets of water forming on a cold glass, the process is primarily due to the condensation of water vapor from the air. Here’s a detailed explanation:
What is Condensation?
- Condensation is the process where water vapor in the air turns into liquid water.
- This occurs when warm, moist air comes into contact with a cooler surface, like a cold glass.
Temperature Differences
- Cold glass lowers the temperature of the air immediately surrounding it.
- Warm air can hold more moisture than cold air. When the warm air cools down at the glass surface, it can no longer hold all the moisture.
Formation of Water Droplets
- As the air cools, the water vapor condenses into tiny liquid water droplets.
- These droplets collect on the surface of the glass, creating what we see as water beads.
Why Not the Other Options?
- a) Water is freezing: This is incorrect because the droplets are not ice; they are liquid water.
- c) Water evaporates from the glass: This would not create droplets; instead, it would decrease the liquid on the glass.
- d) Water absorbs heat: This refers to the opposite process of evaporation, not condensation.
Conclusion
The main reason for water droplets forming on a cold glass is that water vapor in the air condenses into liquid water when it encounters the cooler surface. Understanding this process illustrates the principles of temperature and humidity in our environment.
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What is the main reason water forms droplets on a cold glass?a)Water is freezingb)Water vapour in the air condenses into liquid waterc)Water evaporates from the glassd)Water absorbs heatCorrect answer is option 'B'. Can you explain this answer?
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