What Technique Did Astronomers Use to Make the First Confirmed

question 16

Multiple Choice

What technique did astronomers use to make the first confirmed discovery of a planet around another star like the Sun?

• A) block out the light of the star and take a photograph of the fainter planet
• B) measure the position of the star on the sky very carefully over many years and search for small wiggles in its position due to the gravitational pull of a planet
• C) measure the Doppler shift of the lines in the star's spectrum and look for periodic changes in this shift due to the pull of the planet as it orbits the star
• D) search for the presence of metallic and rocky elements in the spectrum of the star
• E) look for a small dip in the light of the star when the planet crosses its disk

Distinguish between singular and general propositions.

Analyze propositions for logical structure and content relevance.

Translate nonstandard propositions to standard form.

Understand the traditional square of opposition and its implications for proposition relations.

---

Definitions:

Racial Categories

Classifications of humans into groups based on physical traits, ancestry, genetics, or social relations, often used for demographic purposes but critiqued for reinforcing stereotypes.

Biracial

Refers to individuals or groups composed of or pertaining to two different racial lineages.

Blackness

A term referring to the cultural, historical, and social experiences, identities, and expressions associated with people of African descent.

Indian Problem

A term historically used to describe the challenges and policies related to Native Americans by European settlers and American policymakers.