Even If a Black Hole Emitted No Light, We Can

question 16

Multiple Choice

Even if a black hole emitted no light, we can still detect it

• A) from sound waves produced by material falling onto the black hole.
• B) by tides produced on Earth's oceans.
• C) through its Hawking radiation.
• D) through its gravitational effect on surrounding gas or stars.
• E) by looking for dark patches on the sky where the black hole swallows background light.

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Definitions:

Civil Rights Movement

The struggle for social justice in the 1950s and 1960s in the United States, primarily aiming to end racial discrimination and gain equal rights under the law for African Americans.

African-American Community

A group of people in the United States with African heritage, with a distinct culture shaped by historical experiences including slavery and civil rights struggles.

Activists

Individuals who actively promote, impede, or direct social, political, economic, or environmental change and reform.

Johnson Administration

The executive period of Lyndon B. Johnson, the 36th president of the United States, from 1963 to 1969, known for his Great Society programs.