The molecules in a steel bar absorb energy and begin moving more quickly. What is most likely happening to the steel bar? (2 points)

Its temperature is increasing.

It is shrinking.

It is condensing.

Its mass is decreasing.
PLEASE I NEED HELP

Its temperature is increasing.

Explanation:

The temperature of the steel bar is most likely increasing, this way it is gaining more heat energy probably by conduction/convection/radiation.

When temperature changes heat energy is generated. A body increasing in temperature will have its molecules moving more faster tending towards a liquid form if solid originally.

This is as a result of the molecules of the bar gaining more energy and vibrating in their fixed lattice before they eventually break off and flow readily.

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smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.