Class 5 Exam  >  Class 5 Notes  >  EVS Class 5  >  Short Answer Questions: Blow Hot, Blow Cold

Class 5 EVS Chapter 15 Question Answers - Chapter 15 - Blow Hot, Blow Cold

Q1: What did the woodcutter do to keep his hands warm in the winter?
Ans:
The woodcutter blew on his hands to keep them warm in the winter.


Q2: Why did the woodcutter blow on his hot potato?
Ans:
The woodcutter blew on his hot potato to cool it down.


Q3: Why did the woodcutter blow on the fire of the chulha?
Ans:
The woodcutter blew on the fire of the chulha to help the wood burn.


Q4: What happens when we blow hot air onto a colder surface like a mirror?
Ans:
The hot air contains water vapor which turns into tiny droplets of water when it comes in contact with a colder surface like a mirror.


Q5: What is an instrument used to hear heartbeats called?
Ans:
An instrument used to hear heartbeats is called a stethoscope.


Q6: How many breaths does an adult take in one minute?
Ans:
An adult takes 8 to 16 breaths in one minute.


Q7: How many breaths can infants have per minute?
Ans:
Infants can have up to 44 breaths per minute.


Q8: Why do we feel breathless after doing physical activities for a long time?
Ans:
We feel breathless after doing physical activities for a long time because our body needs more oxygen, so we tend to take more breaths.


Q9: What does the sound of a heartbeat resemble?
Ans:
The sound of a heartbeat resembles a ticking clock.


Q10: How can we make our own stethoscope?
Ans:
We can make our own stethoscope using a tube and a funnel to listen to our own heartbeat.

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