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Sep 7, 2024 · Event horizon, boundary marking the limits of a black hole. At the event horizon, the escape velocity is equal to the speed of light. Since general relativity states that nothing can travel faster than the speed of light, nothing inside the event horizon can ever escape beyond it, including light.
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Jul 11, 2024 · AP World Unit 4: Transoceanic Encounters (1450 - 1750 CE) In AP World History: Modern, Unit 4 spans from 1450 CE to 1750 CE and accounts for 12-15% of the material on the exam. This guide was updated to align with the new course.
One of the best-known examples of an event horizon derives from general relativity's description of a black hole, a celestial object so dense that no nearby matter or radiation can escape its gravitational field. Often, this is described as the boundary within which the black hole's escape velocity is greater than the speed of light.
Mar 3, 2023 · The event horizon is the spherical outer boundary of a black hole loosely considered to be its "surface." It is the point, according to NASA, that the gravitational influence of the black hole...
- Question 1—Document-Based Question
- B. Contextualization (0–1 points): 1
- Demonstrating Complex Understanding
- Document Sourcing
- Demonstrating Complex Understanding
- B. Contextualization (0–1 points): 0
- Evidence Beyond the Documents
Note: Student samples are quoted verbatim and may contain spelling and grammatical errors.
The response earned 1 point for contextualization in the first paragraph for a wide-ranging discussion of imperial, colonial, and economic developments relevant to Asia, Africa, and Europe. Multiple specific examples (such as the Industrial Revolution, the American wars of independence, the reference to a “second wave of imperialism,” etc.) show a ...
The response earned 1 point for complexity. Already in the introductory paragraph, the response demonstrates a complex understanding of the causes and consequences of European imperialism, as well as the interconnections between imperialism and economic activity. Throughout the response, evidence from the documents as well as additional evidence is...
The response did not earn the point for sourcing the documents because it does not attempt sourcing analysis of any documents.
The response did not earn the point for complexity. There is no attempt to demonstrate a complex understanding of the extent to which European imperialism affected economies in Africa and/or Asia.
The response did not earn the point for contextualization. The second sentence of the first paragraph contains an attempt to situate imperialism historically, but it is too vague and overgeneralized to.
The response did not earn the point for evidence beyond the documents because it provides no additional pieces of specific historical evidence relevant to the prompt.
May demonstrate a complex understanding in a variety of ways, such as: Explaining the nuance of an issue by analyzing multiple variables. Explaining both similarity and difference, or explaining both continuity and change, or explaining multiple causes, or explaining both causes and effects.
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Download free-response questions from past AP World History exams, along with scoring guidelines, sample responses from exam takers, and scoring distributions.
