Question

to remove a tight - fitting lid from a jar, megan runs the lid under hot water. what happens to the jar lid when its temperature increases?

• the potential energy decreases, and the lid expands.
• the potential energy increases, and the lid contracts.
• the temperature increases, and the lid expands.
• the temperature decreases, and the lid contracts

Explanation:

When the lid is run under hot water, its temperature increases. Most materials expand when heated (thermal expansion). Let's analyze each option:

• First option: Potential energy change isn't the main factor here, and saying potential energy decreases is incorrect.
• Second option: Potential energy increase is not the key, and the lid should expand, not contract.
• Third option: Temperature increases (due to hot water) and the lid expands (thermal expansion), which matches.
• Fourth option: Temperature would increase, not decrease, and lid contracts is wrong.

Answer:

C. The temperature increases, and the lid expands. (Assuming the options are labeled A, B, C, D with C being "The temperature increases, and the lid expands")