We Can Tell That Some Stars Are Relatively Close to Us

question 28

Multiple Choice

We can tell that some stars are relatively close to us in the sky because

• A) they appear to move periodically back and forth against the background stars because of Earth's movement around the Sun.
• B) they appear to be extremely bright.
• C) they are occasionally occulted or eclipsed by our Moon.
• D) the light from these stars shows only a very small redshift caused by the universal expansion of the universe.

---

Definitions:

Women

Female human beings, distinguished biologically by reproductive functions that can include giving birth.

1960s

A decade marked by significant social, political, and cultural change worldwide, including movements for civil rights and against the Vietnam War in the United States.

Technological Progress

Innovations and improvements in technology that can lead to more efficient production methods and economic growth.

Factor of Production

Inputs used in the production of goods or services to make an economic profit, including land, labor, capital, and entrepreneurship.