The Primary Way That We Observe the Atomic Hydrogen That

question 101

Multiple Choice

The primary way that we observe the atomic hydrogen that makes up most of the interstellar gas in the Milky Way is with ________.

• A) radio telescopes observing at a wavelength of 21 centimeters
• B) ground-based visible-light telescopes
• C) space-based ultraviolet telescopes
• D) X-ray telescopes

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Definitions:

Straight Line

A method of calculating depreciation of an asset which assumes equal annual depreciation over the asset's useful life.

Salvage Value

The estimated resale or scrap value of an asset at the end of its useful life.

British Petroleum

A global oil and gas company headquartered in the United Kingdom, known as BP, one of the world's seven oil and gas "supermajors".

Accumulated Depreciation

The cumulative depreciation of an asset up to a single point in its life, reflecting its decrease in value over time.