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Question 18M.3.HL.TZ2.7a.i

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.3.HL.TZ2.7a.i
Level HL Paper 3 Time zone TZ2
Command term Outline Question number a.i Adapted from N/A
a.i.
[Maximum mark: 1]
18M.3.HL.TZ2.7a.i

It is believed that a non-rotating supermassive black hole is likely to exist near the centre of our galaxy. This black hole has a mass equivalent to 3.6 million times that of the Sun.

(a.i)

Outline what is meant by the event horizon of a black hole.

[1]

Markscheme

boundary inside which events cannot be communicated to an outside observer

OR

distance/surface at which escape velocity = c

 

OWTTE

[1 mark]

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