Radiation and their Uses

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

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 are --------------- ----- (15, 5)
  • Gamma rays can be used to treat ------ (6)
  • Radioactivity comes from an -------- nucleus (8)

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