1
Heat flow
Heat always moves from hot to cold.
🔥 → 🧊
Heat Energy
📖 Study · Heat Energy
Heat Energy
Heat moves from hotter to cooler things. Some materials carry heat better than others.
🎯 What you'll learn
- ✓Conductor vs insulator
- ✓Temperature scale
- ✓Why we wear sweaters
2
Heat conductor
Metals carry heat well.
🔧 metal heats fast
3
Heat insulator
Wool, wood, plastic don't carry heat well.
🧶 wool blocks heat
4
Temperature
Measured in degrees Celsius (°C).
🌡️ °C
5
Heat expands
Most things get a tiny bit bigger when warmer. (Trains rails leave gaps for this!)
🌡️ ↑ → ↔ bigger
6
Cooling down
We cool food in fridges to keep it fresh.
🌡️ ↓ + 🧊 = fresh
7
Fire safety
Fire gives heat but is dangerous. Stay back; tell an adult.
🔥 ⚠️