How Volcanoes Form

Lab Brief #3

🎯 Your mission

Master the concept. Use it tomorrow.

⚡ The twist

Today's mountain was yesterday's ocean floor.

What you'll learn

Volcanoes form where magma from the mantle reaches Earth's surface. Shield volcanoes have gentle slopes with flowing lava, while composite volcanoes are steep with explosive eruptions.

Key words

volcano
A mountain where hot melted rock can burst out of the Earth.

Make a hypothesis first

Guess: where will the water go first?

Say your guess out loud — then find out if you were right.

Step 1 of 4 · Read

Look at the vocabulary words and write a definition for each in your own words.

Step 2 of 4 · Do

Build a working model of a volcano using baking soda and vinegar. Observe the eruption and explain what causes real volcanic eruptions.

Step 3 of 4 · Observe

Look for patterns in your observations.

Step 4 of 4 · Record

Make a graph or chart showing your results.

Question 1 of 3

What is a volcano?

How sure are you?😐 maybe

Question 2 of 3

What type of rock forms from cooled magma?

How sure are you?😐 maybe

Question 3 of 3

How do fossils form?

How sure are you?😐 maybe

Mind = blown

🌋 There are 1,500 active volcanoes on Earth right now.

Nice work!

You got 0 of 3 right.

Next: Soil Layers and Horizons All lessons

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✨ More to explore

🌍 Where you see this in real life: Today's weather, tomorrow's beach, next century's coastline — all this.

🏆 Stretch challenge (try it this week): Look at the sky for 5 minutes and try to predict tomorrow's weather.

👨‍👩‍👧 For the dinner table: “What's the slowest change you can think of?”

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How Volcanoes Form

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