Radio Astronomy Has Played a Pivotal Role in Showing Us

question 13

Multiple Choice

Radio astronomy has played a pivotal role in showing us the detailed structure of the Milky Way Galaxy. Which of the following techniques would a radio astronomer use as an essential part of an investigation of this structure?

• A) measuring the Doppler shift of a line in a radio spectrum
• B) taking a photograph of the sky in the direction of the Big Dipper
• C) using a CCD and a filter to record the amount of light from the stars in a nearby open cluster
• D) measuring the amount of synchrotron radiation from the Crab Nebula
• E) measuring the amount of radio radiation coming from the direction of Jupiter and other planets in the solar system

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Definitions:

Canada

A country in North America known for its vast landscapes, multicultural population, and as a member of the Commonwealth.

United States

A country comprising 50 states, a federal district, five major self-governing territories, and various possessions, characterized by a federal republic form of government.

Safer Sex

Avoiding sexual behaviours that are considered high risk as well as engaging in various types of nongenital contact.

Passive

Characterized by lack of active response or action, often implying acquiescence or submission.