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

X
Y
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1# # # # # # # # # # # # # # # # # B # #
2# # # # # # # # # # T W E N T Y F I V E
3# # # # S U O N E G O D N E Y E # O # X
4# # N C I R C A D I A N L L # # # L # O
5# # I A I # # # P # # S A C # # # O # G
6# # N V # T # # E # # R U R # # # G # E
7# # O E # E A # E # # E N I # # # I # N
8# # T # # M # M L # # T N C # # # C # O
9# # A # Z P # E S # # S A C # # N A # U
10# # L # # E # N # A # M C I # # A L # S
11# # E # # R I S # # I A R T # L I T # #
12S U M A L A H T O P Y H I C # A D A # #
13L I # # # T # R G # # N C R # E A H # #
14E # F # # U # U # E F # O A # N R C # #
15E # # F # R # A # R B # # I R I T O # #
16P # # # R E # L A # # E # # S P L H # #
17Y # # # # E # D I # # # R # # E U C # #
18# # # # # # I # # G T A H C O H C S # #
19# # # # # A # # # # H # # # # # # # C #
20# # # # N # # # # # # T # # # # # # # N
Word X Y Direction
ARCTICCIRCLE  1414n
BIOLOGICAL  182s
CAVE  44s
CIRCADIAN  44e
CIRCANNUAL  1313n
ENDOGENOUS  143w
EXOGENOUS  202s
EYE  143e
HAMSTERS  1212n
HYPOTHALAMUS  1212w
INFRADIAN  1312sw
LIGHT  816se
MELATONIN  312n
MENSTRUAL  88s
NOISE  1213se
PINEAL  1616n
SCHOCHAT  1818w
SCHOCHAT  1818w
SCN  1818se
SIFFRE  112se
SLEEP  99n
SLEEPY  112s
SUPRACHIASMATIC  1111nw
TEMPERATURE  66s
TWENTYFIVE  112e
ULTRADIAN  1717n
ZEITGEBER  610se