Radiation and their Uses

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X C K T I J S R R G J P E P U S G A V T N
F I R D T K E A C I E N L A M R K X B H D
O I G X W C D A N I F M B E R E O J R D U
G G K F N O S O R W P U A C K S Y H V O A
B L H A N P R D L T H Q T Y O I K T K G E
C E C G U T A K E B U D S G H N W O B J U
J F A K C A M E Q G W G N V I O C C N U Y
N S X E E I L M N A A S U W V I S W F O N
D C L M H M I B M M T X P D H D A U A V E
V E O R M A K X U M X T J F R O R Y M J F
E I O O D W R B I A L E E C O O Y B U G Y
X S G C B V D O N A G E G F Q G L G W E S
Y G L K T U Y C I N V B M C A Q I B X G K
E F D S R A U G M D W S W Q S L W A D G X
A N T H H A M Q U B I X H J G S G S Y H R
A G Y P F U B F L E F U B J F M Y C W B E
A H L V O L N B A T N Y E T F Q P Y E B S
X A M W O T R N H A B T H P F R D N J O N
M E Y X P I N X T P O H M C O R C F N J M
T B A K I E S Q M O K D P C R S C I D D F
R T X C X X Q C H G S O N X W I C K Q P P

Clues

  • ----- --- ---- are good tracers (5, 3, 4)
  • 51% of background radiation comes from ----- --- (5, 3)
  • A beta particle is a fast moving -------- (8)
  • Alpha particles are ---- -------- (4, 8)
  • An ----- particle consists of two protons and two electrons (5)
  • Background radioactivity includes the Earth's ----- (5)
  • Beta electrons can be stopped by a sheet of --------- (9)
  • Gamma rays can be used to treat ------ (6)
  • Radioactivity comes from an -------- nucleus (8)

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