A mountain that goes BURRRP 💨

Volcanoes

Some mountains have a hot, melty tummy. When it lets go — lava! Ash! BOOM!

Erupted 0 times

👉 Tap the button as many times as you want. I won't tell.

⬇ keep going ⬇
Chapter 1

Look inside a volcano

Tap a part of the picture. It will tell you what it does!

ASH CLOUD CRATER PIPE SIDE WAY OUT MAGMA ROCK UNDER THE GROUND

👆 Pick a part!

The volcano is like a straw in a juicy box. The hot stuff pushes up and pops out of the top.

Chapter 2

Four things that shoot out

A volcano does not throw one thing. It throws a whole messy bag of things!

🌋

LAVA

Hot melted rock that flows out of the hole. It glows orange, then turns black and hard. It moves slower than you can run — so you can walk away!

ABOUT 700 – 1,200 °C

🌫️

ASH

Powder made of tiny sharp bits of rock and glass. It floats way up high and can fall on towns like grey snow.

🫧

GAS

Bubbles! They push and push until — POP!

🪨

ROCKS

Old rock blown clean off the top. It flies and lands with a thump.

🤫

SLEEPING

A volcano that is not erupting is called dormant. That means "napping", not "gone forever".

Chapter 3

Where does the hot stuff come from?

From deep, deep inside the Earth. Tap the layers!

INNER OUTER MANTLE
Crust The crust is the thin, hard skin on top — like the skin on a baked potato. Volcanoes are holes that punch right through it.

💡 Trick word: under the ground it is MAGMA. Out of the ground it is LAVA. Same goo, new name!

Chapter 4

Volcanoes come in three shapes

Tap a shape to see it grow.

wide and gentle small and pointy tall and famous

🥞 The flat, wide one

Its lava is runny, like honey that got too warm. It spreads far and wide, building a huge flat mountain shaped like a pancake. Hawaii has these!

Chapter 5

Drag to heat up a rock

Rocks do not melt in your kitchen. They need a LOT of heat. Try the slider!

20 °C

A boring, cold, solid rock. Nothing is happening. 🪨

cold ⬅ ➡ super duper hot

🪨
Chapter 6

Wait — volcanoes are helpful too?

Yes! Under the right rules, volcanoes give us some lovely things.

🏝️

New land

Lava cools and turns into rock. Again and again, it builds brand new islands out in the sea!

🌱

Super soil

Ash breaks up into some of the richest dirt on Earth. Plants grow HUGE in it.

♨️

Warm baths

Underground heat makes hot springs. People swim in them. They are very steamy and lovely.

💡

Electricity

Some places use volcano heat to make power for their lights and their homes.

🫧

Rock that floats

Pumice is full of air bubbles, so it floats on water like a cork. Try one in the bath!

Chapter 7

Wow facts postcards

Tap a card to flip it over and read the back!

Chapter 8

The Ring of Fire

Volcanoes like to live in lines — especially around the edge of the big Pacific Ocean.

PACIFIC OCEAN Alaska Japan South America New Zealand
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volcanoes that could wake up

About 3 out of every 4 of the world's volcanoes sit around the edge of the Pacific Ocean. Grown-ups call that horseshoe shape the Ring of Fire.

Every day, somewhere on Earth, a volcano is quietly bubbling away.

Word bank

Six big words to know

Tap a card to flip it. You already know most of them!

Last one!

Are you a volcano expert?

Five questions. Have a go — mistakes are how brains grow!

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