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Question 18M.3.SL.TZ2.a

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Date May 2018 Marks available [Maximum mark: 2] Reference code 18M.3.SL.TZ2.a
Level SL Paper 3 Time zone TZ2
Command term Outline Question number a Adapted from N/A
a.
[Maximum mark: 2]
18M.3.SL.TZ2.a

Main sequence stars are in equilibrium under the action of forces. Outline how this equilibrium is achieved.

[2]

Markscheme

photon/fusion/radiation force/pressure balances gravitational force/pressure

gives both directions correctly (outwards radiation, inwards gravity)

 

OWTTE

[2 marks]

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