Science · Stage 4
Earth's Structure
Our planet is built in layers — a thin rocky crust, a thick hot mantle, and a very hot core right at the centre.
✦ Science📘 Stage 4 · S4⏱ ~10 min🧒 Ages 8–9★ Free to start
I can describe Earth's layers, and explain how volcanoes and earthquakes happen where the crust moves.
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Kavi Slices the Earth
Kavi imagines cutting the Earth in half, like slicing a boiled egg 🥚. "Look — our planet is built in layers! On the outside is the crust 🟫, the thin, hard rock where we live. Below it is the mantle 🟧, a thick layer of hot, slow-moving rock. And right in the middle is the core 🔴 — a ball of very hot metal! Come on — let's dig down and meet every layer inside the Earth."
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What your child will learn
1The three layers inside EarthIf you could slice the Earth open, you would see three layers, from the outside to the centre. Tap each one.
2Crust, mantle or core?Each clue describes one of Earth's three layers. Tap the right box for each one!
3Layers, volcanoes and earthquakesThink like a scientist — guess first, then tap to check! Tap Next test for more.
4How a volcano eruptsA volcano erupts where the crust cracks and hot melted rock pushes up from inside. Tap each step in order.
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A peek inside
Kavi slices the Earth in half like a boiled egg 🥚. What are the three layers, from the outside to the centre?
On the outside is the thin crust, below it is the thick hot mantle, and right in the centre is the very hot core.
Try this at home: What are Earth's three layers, from the outside to the centre?
Ready to play and learn?
Start the free interactive lesson, or print the handout for screen-free play.
Part of Science · Stage 4 · S4 on KAVI Academy — a secular, whole-child learning platform for ages 5–12.