Page 34 - SCIENCE

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RESPIRATORY SYSTEM 1st Grade

Activities

We expel ________.
1 Complete:
a) smoke
nose – lungs – trachea – oxygen
• Air enters the body through the __________ b) hydrogen
_________________________________. c) carbon dioxide
• The tube that carries air to the lungs is
call ____________________________. 4 Each circle has the name of a part of the respiratory
system, order the letters and you will discover them.
• The gas we breathe from the air is called ___

_________________________________.
R
A L
2 Relate:
Yo G
a) Expiration the air enters AND
N
to the lungs

b) Inspiration the air comes out
of the lungs

AND
3 Mark the correct answer: R A
we inhale _______. OR T
A
a) carbon dioxide Q

b) oxygen
c) nitrogen

deepen

a
5 Complete the puzzle:
d

a) The air enters through the _________________.

b) Keep going through the ______________. b

c) Then go to the _____________________.

d) The larynx communicates with the ___________.
c

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