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

X
Y
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1# # # # # # # # # # # # # # # # # # # M
2# # # # # # # # # # # # # # # # # N # E
3E V I F Y T N E W T # # # # # # # C # L
4# # # # # # # # # # # # E R F F I S # A
5# # R E B E G T I E Z # # # # # U C # T
6# # E # # # # # # # L A E N I P L H # O
7# # Y M E N S T R U A L # # R S T O # N
8# # E L C R I C C I T C R A U S R C # I
9# # # L A U N N A C R I C O # U A H # N
10S U M A L A H T O P Y H N A # O D A # #
11# # N A I D A R F N I E # # V N I T H #
12# # # # # # # # # A G # # # # E A # A #
13# # # Y P E E L S O # # # # # G N # M #
14# # # # # # # M D # # # # # # O # # S #
15# # # # # # A N O I S E # # # X # # T #
16# # # # # T E M P E R A T U R E # # E #
17# # # B I O L O G I C A L I G H T # R #
18# # # C I R C A D I A N # # # # # # S #
19# # # # # # # # # # # # # # # # # # # #
20# # # # # # # # # # # # # # # # # # # #
Word X Y Direction
ARCTICCIRCLE  148w
BIOLOGICAL  517e
CAVE  139se
CIRCADIAN  418e
CIRCANNUAL  139w
ENDOGENOUS  716ne
EXOGENOUS  1616n
EYE  38n
HAMSTERS  1911s
HYPOTHALAMUS  1210w
INFRADIAN  1111w
LIGHT  1317e
MELATONIN  201s
MENSTRUAL  47e
NOISE  815e
PINEAL  166w
SCHOCHAT  184s
SCHOCHAT  184s
SCN  184n
SIFFRE  184w
SLEEP  913w
SLEEPY  913w
SUPRACHIASMATIC  1111sw
TEMPERATURE  616e
TWENTYFIVE  103w
ULTRADIAN  175s
ZEITGEBER  105w