SPM Physics-Boyle’s Law in the Sky: Why Snacks Puff Up on Planes!

When the airplane rises to high altitude, the outside air pressure decreases, and the air inside the snack bag expands. It’s not that “more air” appears, but rather that lower pressure causes the gas to inflate. As Boyle’s Law states:

$$P_1{V}_1=P_2{V}_2$$

AHA! Everyday little phenomena can reveal the secrets of physical laws.

© 2026 AHA! Physics Moments by Cikgu LimCY. All Rights Reserved.

 

SPM Physics – Latent Heat of Fusion at the Market

 

At the market, fish are kept on ice to stay fresh. But what’s the science behind it? This comic shows how ice absorbs latent heat of fusion from the fish. As the ice melts, it takes away energy, lowering the fish’s temperature and keeping it cool. The fishmonger’s trick isn’t magic — it’s physics!

Freshness is preserved because melting ice steals heat from the fish, not because the fish “likes the cold.” This everyday example connects directly to the SPM KSSM syllabus on Heat and Latent Heat.

© 2026 AHA! Physics Moments by Cikgu LimCY. All Rights Reserved.

SPM Physics –Latent Heat in Daily Life: Sweat and Wind

After running, we often say, “The wind makes me feel cool.” But the truth is more surprising. This comic shows how sweat droplets absorb latent heat from your skin as they evaporate, stealing away energy and leaving you refreshed. The wind only helps the sweat evaporate faster — the real cooling power comes from the hidden heat transfer.

© 2026 AHA! Physics Moments by Cikgu LimCY. All Rights Reserved.

 

SPM Physics –The Hidden Heat That Cooks the Fish: A Simple Story of Latent Heat

 

Ever wondered why steamed fish gets cooked even though steam looks invisible? This short black‑and‑white comic turns a tricky physics idea — latent heat — into a fun everyday story. Watch steam act like a delivery man carrying hidden heat, handing it to the fish, and turning into water droplets. It’s science made simple enough for Grandpa to say, “Ah, now I get it!”

Sometimes the most powerful things in science are unseen — just like latent heat.

© 2026 AHA! Physics Moments by Cikgu LimCY. All Rights Reserved.

Latent Heat Visualization: Why Does Steam Cook Fish Faster?

 Many students confuse Latent Heat and Specific Latent Heat. This interactive simulation helps visualize the movement of particles and the transfer of energy during vaporisation and condensation.

Through animated particle models, students will observe:

✅ Water absorbing latent heat during vaporisation

✅ Steam storing latent energy without increasing temperature

✅ Steam condensing into water droplets on the fish

✅ Latent heat being released directly to the fish

✅ Why steam cooks food faster than hot air at the same temperature

Key Learning Outcomes

• Understand the difference between Specific Latent Heat (J kg⁻¹) and Latent Heat (J).

• Visualize energy transfer during phase changes.

• Recognize that:

  Water → Steam : Latent heat is absorbed

  Steam → Water : Latent heat is released

• Correct a common misconception:

  ✅ Latent Heat is released during condensation.

  ❌ Specific Latent Heat is released during condensation.

Physics Concept

Water has a high Specific Latent Heat of Vaporisation. Therefore, when steam condenses on the fish, a large amount of Latent Heat is released directly onto the food, causing it to cook faster.

Remember:

Specific Latent Heat is a property of a substance.

Latent Heat is the actual energy transferred.

🚀 Click the simulation below and follow the particle movements to see how energy is stored and released during phase changes.