In 1895 Lines Were Observed in the Spectrum of Uranium

question 57

Multiple Choice

In 1895 lines were observed in the spectrum of uranium ore identical to those of helium in the spectrum of the Sun.Which of the following produced the lines in the helium spectrum?

• A)excited electrons jumping to a higher energy level
• B)excited electrons dropping to a lower energy level
• C)excited protons jumping to a higher energy level
• D)excited protons dropping to a lower energy level
• E)none of the above

---

Definitions:

Central Nervous System

The part of the nervous system consisting of the brain and spinal cord, responsible for processing and sending out nerve signals.

Depolarization

The process of reducing the electrical charge difference across a cell membrane, crucial for the propagation of nerve impulses.

Sodium Ions

Positively charged particles of sodium, vital for maintaining the electrolyte balance and blood pressure in the body.

Axon

A long, slender projection of a nerve cell that typically conducts electrical impulses away from the neuron's cell body.