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Science and Nature Quiz for 16 July 2014

A new science quiz is available each week. Try our daily general knowledge quiz or work through our archive of daily and themed quizzes.

Question 1: On 30 August 2012 NASA launched Radiation Belt Storm probes to look at the two doughnut-shaped Van Allen radiation belts of high energy particles encircling the Earth. Three days after the launch they discovered what?

A
The main probe sensors failed
B
The magnetic field holding the belts in place showed a weak point, which strengthened a week later
C
The proportion of alpha particles in the belts was increasing
D
A third belt