The Sun's Source of Energy at the Present Time Is

question 158

Multiple Choice

The Sun's source of energy at the present time is thought to be:

• A) thermonuclear fission (splitting) of heavy elements into hydrogen.
• B) thermonuclear fusion (combination) of hydrogen atoms.
• C) the chemical burning of hydrogen gas with oxygen.
• D) gravitational contraction.

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Definitions:

Kinesthetic Sense

A sense that detects bodily position, weight, or movement of the muscles, tendons, and joints.

Fast Pathway

A term related to neurotransmission, describing a route through which some neural signals travel faster than others.

Cerebral Cortex

The exterior layer of the cerebrum's neural tissue, crucial for functions like memory, attention, perception, cognition, awareness, thinking, language, and consciousness.

Limbic System

A complex system of nerves and networks in the brain, involved with instinct and mood. It controls the basic emotions and drives.