Lava is like melted chocolate? — Teacher Popo's Volcano Class

March 18, 2026

💡 About this story —
What else comes out of a volcano besides lava?
Didi and Teacher Popo explore seven types of volcanic eruption products and discover why basalt and granite look different.
We even do a volcano experiment with marshmallows—let’s uncover the secrets of volcanoes together with Didi.

Hi, I’m Didi from the WAGZAK family.
Today, I’d like to share the story about volcanoes that I heard from Teacher Popo.
At first, I couldn’t believe it when I heard that lava is like melted chocolate.

Into the volcano with Didi — WAGZAK JUMP 3D AR learning

WAGZAK JUMP volcano lesson intro — bubbling eruption, 5 things to explore

What comes out when a volcano erupts? — 7 types of volcanic ejecta

Teacher Popo asked, “What comes out when a volcano erupts?”
Purum answered, “Lava!” but apparently, that’s just one of the seven things.

Volcanic gases, volcanic ash, lava, magma, basalt, granite, and even the crater.
Lava is magma that has risen to the surface, and as Teacher Popo put it, “a hot liquid that flows down like melted chocolate.”

Volcanic ash consists of tiny particles about 2mm in size, and it’s said to fall like rain carried by the wind.
Saerom nodded and said, “So stone dust falls like rain.”

WAGZAK JUMP AR volcano eruption experience — 3D scene of flowing lava

In WAGZAK JUMP, you can explore these seven elements one by one by tapping on them.
You can observe the volcano erupting on the screen firsthand.

Basalt and granite—what’s the difference?

Both were born from magma, but they look completely different.

Basalt forms when magma cools quickly on the Earth’s surface. It’s full of holes where gas escaped and is a deep black color. The stone walls of Jeju Island are made of basalt.

Granite cooled very slowly deep underground. That’s why it has large grains, no holes, and a light gray color. It’s used for building retaining walls and stone pillars.

The key is the cooling speed. If it cools quickly, holes form; if it cools slowly, the grains have time to grow.

3D comparison of basalt and granite — WAGZAK JUMP AR learning

In this lesson, you can control the cooling process of magma with just one touch.
Cool it quickly, cool it slowly—see for yourself how the results change.

Marshmallow Volcano Experiment — Try it with your parents

This is the actual experiment that comes at the end of the lesson. You can do it in the kitchen.

First, wrap a marshmallow in aluminum foil to shape it like a volcano.
Add red strawberry syrup—this acts as the magma.
You can also sprinkle a little cocoa powder on top.

When your parents apply heat, the marshmallow melts and the strawberry syrup bubbles up.
This perfectly recreates the process of rock melting into magma and flowing out.

Marshmallow volcano experiment AR — strawberry syrup magma erupting

⚠️ Since this experiment involves heat, please make sure to do it with a parent.

If you first learn the principle in 3D through the WAGZAK JUMP lesson and then try it yourself,
there comes a moment when your child realizes, “Oh, so that’s what it was.”
Teacher Popo said that that moment is true learning.

A Jeju Volcano Tour from Your Living Room — VR Experience

WAGZAK JUMP offers a VR experience where you can explore five volcanic sites on Jeju Island.

Since you get to see concepts like basalt, lava, and volcanic ash—which you learned in class— in real-world settings, it naturally helps you review what you’ve learned.

WAGZAK JUMP VR Jeju Island volcanic landscape exploration — with the characters

All you need is a smartphone. Explore Jeju’s volcanoes without a plane ticket.

100+

3D Content

Supported Languages

ZERO

Ad-free learning

Science exploration that continues at home

After the lesson ends, Teacher Popo will suggest three activities.

First, try the marshmallow volcano experiment yourself.
Second, pick up a rock from the side of the road or a park and try to guess whether it’s basalt or granite.
Third, look up famous volcanoes around the world, like those in Hawaii or Italy, in books or online.

WAGZAK JUMP volcano quiz — answer 5 questions from a volcano cross-section

The structure of WAGZAK JUMP lessons extends beyond the screen and into everyday life.
The experience of verifying what they’ve learned in the real world is what stays with children the longest.

Ad-free, teacher-verified learning

There are no ads on WAGZAK JUMP.
We’ve removed all distractions so your child can focus on learning.

WAGZAK family characters — Didi and friends

The content was designed and verified in collaboration with current teachers,
and is tailored to the curriculum for children ages 4–12.
The volcano lesson covers the Earth Science curriculum for 3rd and 4th graders.

Teacher Popo explains the concepts, Purum asks questions, and Saerom observes.
Within this flow, children naturally start asking, “Why?”