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Class 4 Science Chapter 1 Test 4

Welcome to your Class 4 Science Chapter 1 Test 4

1. 
The _________ of the heart contract and relax.

2. 
__________ works continuously like a pump throughout the life.

3. 
Our heat pumps with the help of __________.

4. 
Due to __________, our lungs expand and contract.

5. 
____________ is surrounded by the ribs.

6. 
______ help to move hands, arm, feet and legs.

7. 
The ________ is a sac like organ.

8. 
Stomach secretes _______ juice.

9. 
_____________ move food through digestive system.

10. 
_________ controls the functions of our body.

11. 
When one muscle contracts, the other one _________.

12. 
_________ is present within our skill.

13. 
When muscles contract, bone moves at the _________.

14. 
The muscles are _________.

15. 
________ are pink or red in color.