Radiation and their Uses

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

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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