Radiation and their Uses

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