The Diagram Illustrates Physical Size and Angular Size as Seen

question 37

Multiple Choice

The diagram illustrates physical size and angular size as seen by the observer.We can estimate the size in light years (or parsecs or km) of M31 from

• A) its angular size in degrees.
• B) its distance in light years (or parsecs or km).
• C) both answers a and
• D) It is impossible to estimate the size of M31.

---

Definitions:

Abraham Lincoln

The 16th President of the United States who served from 1861 to 1865 and led the country through the Civil War while abolishing slavery with the Emancipation Proclamation and the 13th Amendment.

Popular Sovereignty

The concept that a state and its government's power is established and maintained by the approval of its citizens, via their chosen representatives.

Slavery Abolition

The movement towards and the process of formally ending the legal practice of slavery and human enslavement in various parts of the world.

Tariff of Abominations

The nickname given to the Tariff of 1828 in the United States, which imposed high duties on imports and sparked significant controversy, especially in the South.