1) 1. What does the balloon experiment prove? a) A. Air has colour b) B. Air has smell c) C. Air has mass and weight d) D. Air is cold 2) 2.What happens to the stick when one balloon is inflated? a) A. It remains horizontal b) B. It bends upwards c) C. It bends downwards d) D. It breaks 3) 3. Why does the inflated balloon weigh more? a) A. It contains more rubber b) B. It is tied tighter c) C. It has more air inside d) D. It is larger in size 4) 4. Which material is NOT used in the balloon experiment? a) A. String b) B. Syringe c) C. Stick d) D. Balloons 5) 5. What does the syringe experiment demonstrate? a) A. Air has weight b) B. Air has pressure c) C. Air is liquid d) D. Air is visible 6) 6. What happens when the syringe hole is closed and the plunger is pulled? a) A. It moves easily b) B. It breaks c) C. It requires more force d) D. It makes a sound 7) 7. What causes atmospheric pressure? a) A. Gravity b) B. Sunlight c) C. Moving air molecules d) D. Rain 8) 8.What is the term for the pressure exerted by air? a) A. Hydraulic pressure b) B. Atmospheric pressure c) C. Thermal pressure d) D. Magnetic pressure 9) 9. Can the plunger be pulled out easily when the syringe hole is open? a) A. Yes b) B. No c) C. Only sometimes d) D. It depends on the syringe 10) 10. What do gas molecules in the air do to create pressure? a) A. Stay still b) B. Move randomly and strike surfaces c) C. Freeze d) D. Evaporate

JKC Std VII Experiment 5 Mass/Weight and Pressure of Air

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