Convection

• Convection is the heat transferred through fluids. Either be liquid (water) or gas (wind) 
• Hot air rises and cold air falls due to the difference in density.  
• Cold air is heavier than hot air.  
• Heavy objects sink, but objects with a low-density lend to float  
• Situation of Convection: In a beaker that contains water, add some heat, so the water molecules at the bottom will be heated and as a result, they will rise to the top. As they rise, they will cool down.
• Examples of convection are boiling water, candles, and hot air balloons.
• Both air and water mode due to differences in temperature
• Convection current is the cycle of a heated fluid that rises and sinks. Example is when air in an air-conditioned room creates a circulating convection current. Warm air enters the cold room.
• Convection happens as molecules within liquids or gases are free to move.
• Convection happens when you touch a hot spoon.
• Situation: Heat causes particles near the heat source to gain kinetic energy, spreading out and becoming less dense. These cooler particles sink and take their place. The hot particles will lose their energy and cool down and the cooled particles will heat up. Due to this, the cycle will keep on repeating for as long as the fluid is heated: convection current.