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.

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

X
Y
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1# # # # # # # # # # # E # # # # # # # #
2N # # N # # # # # # # # S # # # # # # #
3# I # C # # # # # # # # # I # # # # # #
4# # N S C H O C H A T # # # O # # # # #
5S # # O U # # # N A I D A R F N I # # #
6I U # # T P I N E A L # # # # # # # E #
7F L M # # A R # # # # # # # # B # # Y T
8F T E A # # L A R C T I C C I R C L E W
9R R N # L # # E C E A # # O # # P N X E
10E A S # I A # # M H # V L # # E D N O N
11R D T # G # H P # # I O E # E O # A G T
12E I R # H # E T # # G A # L G # # I E Y
13B A U # T R # # O I # # S E # # # D N F
14E N A # A # # # C P # # N M # # # A O I
15G # L T # # # A # # Y O # # A # # C U V
16T # U # # # L # # # U H A M S T E R S E
17I R # # # # # # # S L E E P Y # I I # #
18E # # # # # # # L A U N N A C R I C # #
19Z # # # # # # # # # # # # # # # # # # #
20# # # # # # # # # # # # # # # # # # # #
Word X Y Direction
ARCTICCIRCLE  88e
BIOLOGICAL  158sw
CAVE  108se
CIRCADIAN  1818n
CIRCANNUAL  1818w
ENDOGENOUS  198sw
EXOGENOUS  198s
EYE  198n
HAMSTERS  1216e
HYPOTHALAMUS  1216nw
INFRADIAN  175w
LIGHT  59s
MELATONIN  910nw
MENSTRUAL  37s
NOISE  165nw
PINEAL  66e
SCHOCHAT  44e
SCHOCHAT  44e
SCN  44n
SIFFRE  15s
SLEEP  1313ne
SLEEPY  1017e
SUPRACHIASMATIC  1111se
TEMPERATURE  118sw
TWENTYFIVE  207s
ULTRADIAN  26s
ZEITGEBER  118n