Leanna is investigating heat transfer using a metal nail and foam cup filled with hot water. First, she records the temperature of the water and nail. Next, she places the nail in the hot water for ten minutes. Finally, she removes the nail from the water and records the temperature of the water and nail. The table shows her data. How does the motion of the molecules in the nail change after the nail is placed in the hot water?
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Responses
Energy was transferred between the hot water and the nail through convection, causing the molecules in the nail to move slower.
Energy was transferred between the hot water and the nail through convection, causing the molecules in the nail to move slower.
Energy was transferred from the hot water to the nail through convection, causing the molecules in the nail to move faster.
Energy was transferred from the hot water to the nail through convection, causing the molecules in the nail to move faster.
Energy was transferred from the hot water to the nail through conduction, causing the molecules in the nail to move faster.
Energy was transferred from the hot water to the nail through conduction, causing the molecules in the nail to move faster.
Energy was transferred between the hot water and the nail through conduction, causing the molecules in the nail to move slower
Energy was transferred between the hot water and the nail through conduction, causing the molecules in the nail to move slower.
Energy was transferred from the hot water to the nail through conduction, causing the molecules in the nail to move faster.
Explanation:
In this experiment, Leanna is investigating heat transfer. Heat can be transferred through three methods: conduction, convection, and radiation. In this case, the heat transfer is happening between the hot water and the nail.
Conduction is the transfer of heat between two objects in direct contact with each other. When Leanna places the metal nail in the hot water, heat is transferred from the hot water to the nail through conduction. This means that the molecules in the hot water transfer their kinetic energy (motion) to the molecules in the nail, increasing their speed and causing them to move faster.
Convection, on the other hand, is the transfer of heat through the movement of fluids. While convection does occur in this experiment (as the water is moving and transferring heat), the main method of heat transfer from the hot water to the nail is conduction, since the nail and water are in direct contact with each other.
Therefore, the correct answer is: Energy was transferred from the hot water to the nail through conduction, causing the molecules in the nail to move faster.