Concept explainers
Interpretation:
The function of hot air balloon is to be explained, and the relation between windy coastal weather and Charle’s Law is to be described.
Concept Introduction:
According to Archimedes principle, any object suspended in a fluid, is acted upon by an upward buoyant force which is equal to the weight of the fluid that has been displaced by the object. A hot air balloon with a vacuum inside is lifted by buoyant force because it weighs less than air.
The rising of air due to heat is called convection; the earth is heated unevenly. According to Charles law that part of the air which heats up faster will expand faster, along with a drop in pressure. As the air above the sea is cooler (high pressure), air flows from a high pressure region to the low pressure region.
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