Question 9Nelson places a stainless steel spoon in a cup of hot coffee, as shown in the picture.How does the motion of the atoms in the spoon change when the spoon is placed in the hot coffee?A The atoms vibrate faster due to the conduction of heat through atoms in the spoon.B The atoms vibrate slower due to the conduction of heat through atoms in the spoon.C The atoms move closer toward each other due to the radiation of heat through atoms in the spoon.D The atoms move away from each other due to the convection of heat through atoms in the spoon.
Question
Question 9Nelson places a stainless steel spoon in a cup of hot coffee, as shown in the picture.How does the motion of the atoms in the spoon change when the spoon is placed in the hot coffee?A The atoms vibrate faster due to the conduction of heat through atoms in the spoon.B The atoms vibrate slower due to the conduction of heat through atoms in the spoon.C The atoms move closer toward each other due to the radiation of heat through atoms in the spoon.D The atoms move away from each other due to the convection of heat through atoms in the spoon.
Solution
The correct answer is A. The atoms vibrate faster due to the conduction of heat through atoms in the spoon.
Here's the step by step explanation:
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When the stainless steel spoon is placed in the hot coffee, the atoms at the end of the spoon that is in contact with the hot coffee start to absorb the heat energy.
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This heat energy causes the atoms to vibrate faster. This is because heat energy is essentially the kinetic energy of atoms - the more heat energy the atoms have, the faster they vibrate.
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This increased vibration of atoms at the end of the spoon in contact with the hot coffee then gets transferred to the adjacent atoms in the spoon.
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This process continues, with the vibration (and thus the heat energy) being passed from atom to atom along the spoon. This is known as conduction of heat.
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Therefore, the overall effect is that the atoms in the spoon vibrate faster when the spoon is placed in the hot coffee.
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