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Question 18M.3.SL.TZ1.12a

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.3.SL.TZ1.12a
Level SL Paper 3 Time zone TZ1
Command term Explain Question number a Adapted from N/A
a.
[Maximum mark: 1]
18M.3.SL.TZ1.12a

The Hubble constant is accepted to be 70 km s–1 Mpc–1. This value of the Hubble constant gives an age for the universe of 14.0 billion years.

The accepted value of the Hubble constant has changed over the past decades.

(a)

Explain how international collaboration has helped to refine this value.

[1]

Markscheme

experiments and collecting data are extremely costly

data from many projects around the world can be collated

 

OWTTE

[1 mark]

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