Earth’s Inside Story: Layers, Volcanoes, and Staying Safe

Overview & Key Learning Objectives

Over five days, your child will explore Earth’s layers, model how magma can become lava, and safely observe a simple eruption simulation. Drawing and playdough models make the ideas visible and hands-on. Models are simplified and not drawn to scale.

By the end of the unit, your child will be able to:

• Name Earth’s crust, mantle, outer core, and inner core.
• Describe some basic differences between Earth’s layers.
• Explain how magma can move through Earth’s crust and erupt as lava.
• Observe a baking soda and vinegar reaction and connect it to a volcano model.
• Name simple ways to stay safe during a natural hazard, such as following trusted adults and official instructions.

Household Supply Checklist

• Paper
• Crayons
• Playdough
• Baking soda
• Vinegar
• Food coloring
• Flour
• Small cup
• Tray or large plate
• Spoon
• Water and towel for cleanup

5-Day Daily Breakdown

Day 1: What’s Inside Earth?

Teacher Script: Today we’re going to imagine traveling from the ground beneath our feet all the way to the center of Earth. Earth has four main layers: the crust, mantle, outer core, and inner core. They are different from one another, and our picture will help us remember their order. Our drawing is a model, so its layers won’t be the same size as the real ones.

Hands-on Activity:

1. Ask your child to draw a large circle on paper and imagine it is Earth.
2. Have them draw three smaller circles inside it to make four layers.
3. Color and label the outside crust, then the inside layers mantle, outer core, and inner core.
4. Point to each layer together, starting at the outside and moving toward the center.
5. Ask your child to describe one thing they notice about the order.

Adaptation Note: If drawing feels challenging, draw the circles together or let your child color a parent-drawn diagram. An older sibling can add simple labels such as “solid” and “liquid” with your guidance.

Day 2: Build Earth in Playdough

Teacher Script: Yesterday we drew Earth’s layers, and today we’ll build a model we can touch. The crust is the thin outer layer, the mantle is beneath it, and the core has an outer part and an inner part. The outer core is liquid, while the inner core is solid. Our playdough model shows the order, but it cannot show Earth’s true heat or size.

Hands-on Activity:

1. Choose four playdough colors, or use different shapes if you have fewer colors.
2. Make a small ball for the inner core.
3. Wrap or press another color around it for the outer core, then add a thicker layer for the mantle.
4. Add a thin outside layer for the crust.
5. Gently flatten the model enough to show its layers, then point to and name each one.

Adaptation Note: For a child who prefers not to mix colors, make separate playdough rings and stack them. Invite an older sibling to explain why the thin crust is hard to show at the correct scale.

Day 3: How Does a Volcano Form?

Teacher Script: Deep inside Earth, melted or partly melted rock is called magma. Sometimes magma moves upward through cracks in Earth’s crust. When it reaches the surface, we call it lava. A volcano is a place where materials from inside Earth can come out, but not every volcano erupts in the same way.

Hands-on Activity:

1. Use playdough to shape a mountain around a small space at the top, leaving an opening for a crater.
2. Place the model on paper and draw arrows pointing upward from deep underground to the opening.
3. Label the underground material magma and the material outside the opening lava.
4. Add a simple path or crack inside the model to show how magma might move through the crust.
5. Have your child tell the story of the arrows, from magma underground to lava at the surface.

Adaptation Note: If shaping a mountain is tricky, make a flat drawing instead and add playdough arrows. An older sibling can add labels for “crust” and “crater,” while your child points out the magma’s path.

Day 4: Watch a Model Eruption

Teacher Script: Today we’ll watch a small reaction bubble up inside our volcano model. Baking soda and vinegar make bubbles of gas, which can push the mixture upward and out of the opening. This is a model, not a real volcanic eruption: real volcanoes involve hot rock, gases, ash, and much more powerful forces. We’ll keep the experiment on a tray and let an adult handle the ingredients.

Hands-on Activity:

1. Put the playdough volcano on a tray or large plate, with the small cup positioned in its opening.
2. With adult help, add a spoonful of baking soda and a drop of food coloring to the cup.
3. Ask your child to predict what might happen when vinegar is added.
4. The adult slowly pours a small amount of vinegar into the cup while the child watches from nearby.
5. Observe the bubbles, then have your child draw what happened and label the cup’s “eruption” as a model.

Adaptation Note: If your child dislikes fizzing or splashing, watch from farther away or skip the pour and look at a drawing of the reaction instead. Keep the mixture away from eyes and mouths, and never taste it.

Day 5: Volcano Safety and Show What You Know

Teacher Script: Volcanoes are natural hazards, which means they can sometimes be dangerous. People who live near volcanoes use information from experts and follow instructions from local officials. We should never go near lava, ash, or an eruption to investigate. Today you’ll show what you’ve learned and make a simple safety plan with me.

Hands-on Activity:

1. Review the playdough Earth and volcano models; have your child point to the four Earth layers and the magma-to-lava path.
2. On paper, draw one safe action for a volcanic emergency, such as staying with a trusted adult and following official instructions.
3. Ask your child to explain that action aloud; add “listen to trusted adults and local officials” to the drawing if needed.
4. Give a short check: ask your child to name the four layers, say where magma becomes lava, and tell one safe action.
5. Celebrate the finished drawing and models as the unit project.

Adaptation Note: Accept pointing, drawing, or one-word answers for the check; the goal is understanding, not memorizing a speech. An older sibling can add a second safety action, such as staying away from ash or following an evacuation instruction from officials.

5 Review / Discussion Questions

1. What are Earth’s four main layers, starting from the outside?
2. Which layer is the thin outer layer where we live?
3. What do we call melted rock underground, and what do we call it after it reaches the surface?
4. What did the baking soda and vinegar model show, and how is it different from a real eruption?
5. What is one safe thing to do if trusted adults or local officials give instructions during a natural hazard?

Online Learning Resources

• Khan Academy: Volcanoes search — Parent-guided videos and explanations to explore volcanoes.
• National Geographic Kids — Kid-friendly science articles and visuals; search the site for volcanoes.
• USGS Volcano Hazards Program — Reliable information about volcanoes and hazards; best explored with a parent.
• Britannica: Volcanoes search — Reference articles that a parent can adapt for a young learner.
• PBS LearningMedia — Educational videos and materials; search for volcanoes or Earth’s layers.
• YouTube search: volcanoes for kids and Earth’s layers — Search link for parent-previewed educational videos.