query: Why does lighter air goes up?
positive_passages.docid: 156386
positive_passages.text: Why does hot air rise?
negative_passages.docid: 83512
negative_passages.text: What is the effect of an increase in pressure on latent heat of vaporization?
negative_passages.docid: 60730
negative_passages.text: Why is air not sucked off the Earth?
negative_passages.docid: 59869
negative_passages.text: Why does Flow always occur from Higher Potential to Lower Potential?
negative_passages.docid: 68369
negative_passages.text: Why don't spinning tops fall over?
negative_passages.docid: 114257
negative_passages.text: Balloons and lifting gases
negative_passages.docid: 143010
negative_passages.text: Atmospheric pressure In FBD doubt
negative_passages.docid: 13691
negative_passages.text: Why do we generally round 5's up instead of down?
negative_passages.docid: 27213
negative_passages.text: Why does a helium filled balloon move forward in a car when the car is accelerating?
negative_passages.docid: 39594
negative_passages.text: Why sound does not heat up the air?
negative_passages.docid: 148680
negative_passages.text: Why when opening parachute, the man doesn't go upwards?
negative_passages.docid: 153871
negative_passages.text: Why is my starting gravity low?
negative_passages.docid: 58355
negative_passages.text: Why does inertia happen?
negative_passages.docid: 144778
negative_passages.text: Is there difference in force when the height increases?
negative_passages.docid: 107004
negative_passages.text: Will the box move if I blow air inside it?
negative_passages.docid: 5589
negative_passages.text: Do particles always flow from high to low pressure?
negative_passages.docid: 74021
negative_passages.text: Why do heavier objects fall faster in air?