High School

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A student designed an experiment to show how water is recycled through the atmosphere. The steps of the experiment are shown below:

1. Boil 500 mL of water in a beaker.
2. Hold a hot glass plate a few inches above the beaker with a pair of tongs.
3. Observe water droplets on the glass plate.

The student did not see water dripping off the glass plate as expected because the experiment had a flaw. Which of these statements best describes a method to correct the flaw in this experiment?

A. Hold the glass plate closer to the beaker.
B. Boil the water in a pan instead of a beaker.
C. Take more than 500 mL of water in the beaker.
D. Use a cold glass plate instead of a hot glass plate.

Answer :

The flaw in the experiment on water recycling is that the student did not see water dripping off the glass plate as expected. To correct this flaw, the student should use a cold glass plate instead of a hot glass plate.

The correct option to the given question is option 4.

When the student holds the hot glass plate above the beaker, the water vapor in the atmosphere will come into contact with the cold surface of the plate and condense, forming water droplets. However, if the glass plate is already hot, it will not be able to cool down the water vapor quickly enough for condensation to occur.

By using a cold glass plate, the temperature difference between the plate and the water vapor will be greater, allowing for faster condensation. This will result in water droplets forming on the glass plate and dripping off, demonstrating the process of water recycling through the atmosphere.

Therefore, the correct method to correct the flaw in this experiment is to use a cold glass plate instead of a hot glass plate. This will enable the student to observe water droplets on the glass plate as expected.

For more such questions on water visit:

https://brainly.com/question/1313076

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