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Select the option that best completes the following sentence. A conical flask containing water is heated by a Bunsen burner. The water at the bottom of the flask starts to rise because it is ____________ than the water above it.colder and more densewarmer and less densecolder and less densewarmer and more dense

Question

Select the option that best completes the following sentence. A conical flask containing water is heated by a Bunsen burner. The water at the bottom of the flask starts to rise because it is ____________ than the water above it.colder and more densewarmer and less densecolder and less densewarmer and more dense

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Solution

The correct answer is "warmer and less dense".

Here's why: When the Bunsen burner heats the conical flask, the water at the bottom of the flask gets warmer. As a result, it becomes less dense than the cooler water above it. This difference in density causes the warmer water to rise, while the cooler, denser water sinks to the bottom. This process is known as convection.

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