Class 4 Science Chapter 1 Test 4 Welcome to your Class 4 Science Chapter 1 Test 4 1. Our heat pumps with the help of __________. Ribs Skull Muscles None of these 2. _______ of our body weight is due to muscles Full Half Zero 5 kg 3. The muscles are _________. Hard Soft Both a & b None of these 4. When one muscle contracts, the other one _________. Also contract Relaxes Both a & b None of these 5. Stomach is the _________ part of digestive track. Smallest Tallest Biggest Shortest 6. _________ controls the functions of our body. Lungs Stomach Heart Brain 7. __________ works continuously like a pump throughout the life. Lungs Brain Stomach Heart 8. _____________ move food through digestive system. Ribs Skull Muscles None of these 9. _________ is present within our skill. Lungs Stomach Heart Brain 10. Due to __________, our lungs expand and contract. Ribs Skull Muscles None of these 11. When muscles contract, bone moves at the _________. Joint Leg Ribs Skull 12. ______ help to move hands, arm, feet and legs. Ribs Skull Muscles None of these 13. ____________ is surrounded by the ribs. Heart Skull Brain None of these 14. __________ collects information from different parts of our body and decides what type of response our body should give. Lungs Stomach Heart Brain 15. When we smile ______ muscles are needed. 12 13 14 15 Please fill in the comment box below. Time is Up! Time's up