As an Interstellar Cloud of Hydrogen Gas Shrinks in Size

question 61

Multiple Choice

As an interstellar cloud of hydrogen gas shrinks in size, its temperature increases,

• A) because gravitational potential energy is converted to thermal energy.
• B) because kinetic energy is converted to radiative energy.
• C) because thermal energy is converted to radiative energy.

---

Definitions:

State-dependent Memory

The phenomenon where information learned in a particular state of mind (e.g., emotional or physiological state) is more easily recalled when in the same state.

Prefrontal Cortex

The part of the brain located at the front of the frontal lobes, involved in complex behaviors including planning, decision making, and moderating social behavior.

Temporal Lobe

A region of the brain responsible for processing auditory information and encoding memory.

Amygdala

A region of the brain involved in emotional processes, including fear and pleasure.