Background Radiation Physics Worksheets (Page 4 of 6) in pdf

Background Radiation Physics Worksheets Page 4

M1.

(a)

1 mark for each correct line

if more than 1 line has been drawn from a box in List A then all

those lines are marked incorrect

(b)

higher in village B

by 6 units

allow 1 mark for correctly obtaining a height difference of 180 (m) /

4 times higher – this refers to height not radiation levels

accept for 3 marks in village A it is 2 units (extra) and in village B it

is 8 units (extra) allow 1 mark for a correct radiation calculation

based on incorrect height readings

[6]

M2.

(a)

(i)

(nuclear) fission is the splitting of a (large atomic) nucleus

do not accept particle/atom for nucleus

(nuclear) fusion is the joining of (two atomic) nuclei (to form a larger one)

do not accept particles/atoms for nuclei

(ii)

energy

accept heat/radiation/nuclear energy

accept gamma (radiation)

do not accept neutrons/neutrinos

(b)

(i)

uranium (–235)

accept U (–235)

ignore any numbers given with uranium

accept thorium

accept MOX (mixed oxide)

do not accept hydrogen

Page 4 of 6

Background Radiation Physics Worksheets Page 4