SPM Physics:AHA! The Cold Comes First: Evaporation and Energy Transfer

 

SPM Physics is everywhere — even before an injection. The cold sensation from isopropyl alcohol is not because the liquid is cold, but because evaporation requires energy. That energy is absorbed from your skin, causing heat loss, temperature drop, and the cooling effect.

• Cause → Effect Chain:

  • Alcohol placed on skin (liquid)

  • Evaporates (liquid → gas)

  • Energy required for phase change

  • Heat absorbed from skin

  • Skin loses thermal energy

  • Temperature decreases

  • Cooling effect occurs

Formula reminder:

$$Q=m\times L$$

Beyond the exam, this comic reflects a deeper truth. Science is not only about marks — it is about noticing invisible energy transfers all around us. The world is always teaching; the question is whether we notice. AHA! Moment: Physics teaches: evaporation absorbs heat, cooling the skin.

Life teaches: invisible transfers shape our reality — if we notice them.

AHA! Cold comes first. Energy transfers unseen. Not by sight, but by INSIGHT!

#AHAPhysicsMoments #CikguLimCY #PhysicsInEverydayLife

#100DaysOfPhysics #SeeWithPhysicsEyes #PhysicsWithInsight