Why Does Hot Air Rise ? : āĻ—ā§°āĻŽ āĻŦāĻžāϝāĻŧ⧁ āĻ•āĻŋāϝāĻŧ āĻ“āĻĒā§°āϞ⧈ āωāϠ⧇ ?







  1. Air is made of tiny particles. : āĻŦāĻžāϝāĻŧ⧁ āϏ⧰⧁ āϏ⧰⧁ āĻ•āĻŖāĻžā§°ā§‡ āĻ—āĻ āĻŋāϤāĨ¤

  2. When air is heated, the particles move faster. : āϝ⧇āϤāĻŋāϝāĻŧāĻž āĻŦāĻžāϝāĻŧ⧁ āĻ—ā§°āĻŽ āĻšāϝāĻŧ, āĻ•āĻŖāĻžāĻŦā§‹ā§° āĻŦ⧇āĻ›āĻŋ āĻŦ⧇āϗ⧇⧰⧇ āϚāϞāĻŋāĻŦāϞ⧈ āφ⧰āĻŽā§āĻ­ āϕ⧰⧇āĨ¤

  3. They spread out and take more space. : āχāĻšāρāϤ⧇ āĻ…āϧāĻŋāĻ• āĻ āĻžāχ āϞāϝāĻŧ āφ⧰⧁ āĻĻā§‚ā§°āϤ āĻĻā§‚ā§°āϤ āĻ›āĻĄāĻŧāĻžāχ āϝāĻžāϝāĻŧāĨ¤

  4. Hot air becomes less dense. : āĻ—ā§°āĻŽ āĻŦāĻžāϝāĻŧ⧁⧰ āϘāύāĻ¤ā§āĻŦ āĻ•āĻŽ āĻšā§ˆ āϝāĻžāϝāĻŧāĨ¤

  5. Less dense air rises above cooler air. : āĻ•āĻŽ āϘāύāĻ¤ā§āĻŦ āĻĨāĻ•āĻž āĻŦāĻžāϝāĻŧ⧁ āĻ āĻžāĻŖā§āĻĄāĻž āĻŦāĻžāϝāĻŧ⧁⧰ āĻ“āĻĒā§°āϤ āωāĻ āĻŋ āϝāĻžāϝāĻŧāĨ¤

  6. Cooler, heavier air moves downward. : āĻ āĻžāĻŖā§āĻĄāĻž āφ⧰⧁ āĻ…āϧāĻŋāĻ• āϘāύ āĻŦāĻžāϝāĻŧ⧁ āϤāϞāϞ⧈ āύāĻžāĻŽāĻŋ āϝāĻžāϝāĻŧāĨ¤



Key Point: Hot air rises because it becomes less dense when heated. āĻŦāĻžāϝāĻŧ⧁ āĻ—ā§°āĻŽ āĻš’āϞ⧇ āχāϝāĻŧāĻžā§° āϘāύāĻ¤ā§āĻŦ āĻ•āĻŽ āĻšāϝāĻŧ, āϏ⧇āχāĻ•āĻžā§°āϪ⧇ āĻ—ā§°āĻŽ āĻŦāĻžāϝāĻŧ⧁ āĻ“āĻĒā§°āϞ⧈ āωāϠ⧇āĨ¤

Concept related to Density and Convection in science.