Biological Rhythms: the sleep-waking cycle

ARCTICCIRCLE
BIOLOGICAL
CAVE
CIRCADIAN
CIRCANNUAL
ENDOGENOUS
EXOGENOUS
EYE
HAMSTERS
HYPOTHALAMUS
INFRADIAN
LIGHT
MELATONIN
MENSTRUAL
NOISE
PINEAL
SCHOCHAT
SCHOCHAT
SCN
SIFFRE
SLEEP
SLEEPY
SUPRACHIASMATIC
TEMPERATURE
TWENTYFIVE
ULTRADIAN
ZEITGEBER

See how much you remember about biological rhythms and the sleep-waking cycle with this wordsearch. Answer the questions first then look for the missing word in the grid below.

Try to find all 27 words on this board.

Q F O T Y V N D F O F W J W S K U M E E
O N N L D T W E N T Y F I V E V S Z K C
T U C O U Y Y C A E A O A F B N F Z O G
S M X S C H O C H A T E X O G E N O U S
P H J L U L T R A D I A N W V U J V B K
P E P E L P I N E A L P F J C K X C E I
A I E E F J R H N N I N O T A L E M Y T
X L H P W C A A R C T I C C I R C L E G
N A I D A C R I C I R C A N N U A L N C
Q V S R E T S M A H X Z P C O J X U D B
W C L A C I G O L O I B B Q J I O K O Z
K M J O C Y P W H X T A V J W P S Y G P
K Y S A E D H Y P E E L S I F F R E E J
Q T E I G L A U R T S N E M B Q P H N A
B B H I C R E B E G T I E Z A G J E O S
O D Q G S E R U T A R E P M E T M V U R
K V V K I U Y F N A I D A R F N I A S N
O S U M A L A H T O P Y H D E N H C S Q
Z W X M C A K M C T V T D W Q N T M S Y
V J T J C S C G V A M K X A K N U T U I
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Answer Key for Biological Rhythms: the sleep-waking cycle

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1# # # # # # # # # # # # # # # # # # # #
2# N # # # T W E N T Y F I V E # # # # #
3# # C # # # # # # # # # # # # # # # # #
4# # # S C H O C H A T E X O G E N O U S
5# # # L U L T R A D I A N # # # # # # #
6# # # E # P I N E A L # # # # # # # E #
7# # # E # # R # # N I N O T A L E M Y #
8# # # P # # # A R C T I C C I R C L E #
9N A I D A C R I C I R C A N N U A L N #
10# # S R E T S M A H # # # # O # # # D #
11# # L A C I G O L O I B # # # I # # O #
12# # # # # # # # # # # A # # # # S # G #
13# # # # # # # Y P E E L S I F F R E E #
14# T # # # L A U R T S N E M # # # # N #
15# # H # # R E B E G T I E Z A # # E O #
16# # # G # E R U T A R E P M E T # V U #
17# # # # I # # # N A I D A R F N I A S #
18# S U M A L A H T O P Y H # # # # C # #
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Word X Y Direction
ARCTICCIRCLE  88e
BIOLOGICAL  1111w
CAVE  1818n
CIRCADIAN  99w
CIRCANNUAL  99e
ENDOGENOUS  198s
EXOGENOUS  124e
EYE  198n
HAMSTERS  1010w
HYPOTHALAMUS  1318w
INFRADIAN  1717w
LIGHT  618nw
MELATONIN  187w
MENSTRUAL  1414w
NOISE  149se
PINEAL  66e
SCHOCHAT  44e
SCHOCHAT  44e
SCN  44nw
SIFFRE  1313e
SLEEP  44s
SLEEPY  1313w
SUPRACHIASMATIC  1111se
TEMPERATURE  1616w
TWENTYFIVE  62e
ULTRADIAN  55e
ZEITGEBER  1315w