Read each clue and fill in the missing word about breathing!
Fill in!
After holding her breath, Priya let go with a big puff — she was -ing, pushing stale air out from her lungs.
carbon dioxide
exhale
inhale
The fire needs one gas to keep burning — the same gas the human body needs to keep working. That gas is .
diaphragm
spiracles
oxygen
The doctor asked Leena to take a deep breath in, then let it out slowly. The large dome-shaped muscle below the — called the
spiracles
diaphragm
inhale
A scientist put a fish in a box with no water. It died quickly. Without water, the fish cannot use its to get oxygen.
gills
exhale
oxygen
A science teacher held a lighted candle near a child's exhaled breath and the flame flickered. The gas that makes the breath different from fresh air is .
carbon dioxide
exhale
lungs
2
Each animal or creature is in a specific situation. Sort each one — does it breathe through LUNGS (an air-breathing animal) or through a DIFFERENT organ (gills, skin, spiracles)?
Sort it!
1A blue whale that must return to the surface every hour or suffocate
2A tadpole that cannot survive if taken out of the pond water
3A bat hanging upside down in a cave ceiling
4A cow standing in a flooded field with water up to its knees
5A goldfish swimming quietly in a bowl, never coming to the surface
6A frog sitting on a lily pad in the sun
7A grasshopper that can be seen breathing even when completely still — its sides pulse with tiny openings
8An earthworm that dies in dry soil but survives when the garden is kept moist
Breathes through lungs (air breather)
write sentence numbers here
Breathes through another organ
write sentence numbers here
3
Nisha did several 'blowing' experiments at home. Sort each result — is it caused by HOT breath (warm exhaled air, mouth open) or by COOL directed air (lips pursed into a small circle)?
Sort it!
1Her glasses fogged when she sighed on them with an open mouth
2After the injection, the nurse told her to blow on the sting — it hurt less for a moment
3She blew hard on the spoonful of rice and it was no longer too hot after a few seconds
4The hot soup she was blowing on became cool enough to drink in two minutes
5Her freezing fingers felt warm after she cupped them and breathed into her fists
6She could see small clouds of 'steam' from her mouth in the cold morning air during assembly
