Which of the following statements best describes how a convection current causes smoke to rise out of chimney A but sink through chimney B?The candle heats the air particles around it and they expand. The means the air particles become less dense and rise out of chimney A. Cooler, more dense air particles are then sucked into chimney B in a convection current.The candle heats the air around it, which contracts, becomes less dense and rises out of chimney A. Cooler, more dense air is sucked into chimney B in a convection current.The candle heats the air around it, which expands, becomes less dense and rises out of chimney A. Cooler, more dense air is sucked into chimney B in a convection current.The candle heats the air particles around it and they contract. The means the air particles become more dense and rise out of chimney A. Cooler, less dense air particles are then sucked into chimney B in a convection current.
Question
Which of the following statements best describes how a convection current causes smoke to rise out of chimney A but sink through chimney B?The candle heats the air particles around it and they expand. The means the air particles become less dense and rise out of chimney A. Cooler, more dense air particles are then sucked into chimney B in a convection current.The candle heats the air around it, which contracts, becomes less dense and rises out of chimney A. Cooler, more dense air is sucked into chimney B in a convection current.The candle heats the air around it, which expands, becomes less dense and rises out of chimney A. Cooler, more dense air is sucked into chimney B in a convection current.The candle heats the air particles around it and they contract. The means the air particles become more dense and rise out of chimney A. Cooler, less dense air particles are then sucked into chimney B in a convection current.
Solution
The correct statement is: "The candle heats the air around it, which expands, becomes less dense and rises out of chimney A. Cooler, more dense air is sucked into chimney B in a convection current."
Here's why:
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The candle heats the air around it: The heat from the candle causes the air particles in its immediate vicinity to gain energy and move faster.
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The air expands and becomes less dense: As the air particles move faster, they spread out or expand. This expansion causes the air to become less dense (there are fewer particles in a given volume).
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The less dense air rises out of chimney A: Less dense air is lighter than the surrounding cooler air, so it rises upwards, moving out of chimney A.
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Cooler, more dense air is sucked into chimney B: As the warm air rises out of chimney A, it creates a low pressure area. The surrounding cooler air, which is denser (has more particles in a given volume), moves into this low pressure area, getting sucked into chimney B. This movement of air from an area of high pressure (cooler, denser air) to an area of low pressure (warmer, less dense air) is known as a convection current.
Similar Questions
A convection current will be produced by the experiment in the diagram below.Correctly order the steps explaining how the convection current occurs.Step 1:Step 2:Step 3:Step 4:Possible AnswersThe candle heats the air around it.The air expands, making it less dense.The less dense air rises out of chimney A.Cooler more dense air replaces this air through chimney B.I DON'T KNOWRESETSUBMIT ANSWER
Which of the following statements best describes how a convection current forms in the experiment below?The Bunsen burner heats the water particles and they expand. The less dense water particles rise up the tube. The cooler, more dense water particles are sucked around to be heated in a convection current.The Bunsen burner heats the water, which contracts, becomes less dense and rises up the tube. The cooler, more dense water is sucked around to be heated in a convection current.The Bunsen burner heats the water, which expands, becomes less dense and rises up the tube. The cooler, more dense water is sucked around to be heated in a convection current.The Bunsen burner heats the water particles and they contract. The more dense water particles rise up the tube. The cooler, less dense water particles are sucked around to be heated in a convection current.
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