Radiation and their Uses

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

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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