What Is the Rock Cycle?
Volcanoes, Magma, Sediments & Rocks for Kids (Ages 3–11)
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In this adventure-filled episode of Orbit: Science for Kids on the Move, kids follow “Walter the Rock” on an incredible journey through the rock cycle with Dr. Lina Pérez-Angel, a geoscientist at Brown University and member of the Geological Society of America.
Through imaginative storytelling, volcano explosions, ocean journeys, and real questions from kids, listeners learn how rocks melt into magma, erupt from volcanoes, break into sediments, and transform under heat and pressure over millions of years. Dr. Lina introduces the three main rock types ‘igneous, sedimentary, and metamorphic rocks—and explains how scientists study Earth’s changing surface.
This episode introduces foundational Earth science concepts in a fun and memorable way while helping kids understand geology, natural processes, and how rocks are constantly changing—even if they seem still and silent.
Episode vocabulary!
Build science language while you listen!
Rock Cycle: The continuous process that changes rocks from one type into another over time
Mineral: A tiny natural building block that makes up rocks
Magma: Melted rock beneath Earth’s surface
Lava: Melted rock that reaches Earth’s surface
Igneous Rock: Rock formed when magma or lava cools and hardens
Sediment: Tiny pieces of rock, minerals, or living things
Sedimentary Rock: Rock formed when sediments are pressed together over time
Metamorphic Rock: Rock changed by heat and pressure deep underground
Pressure: A force that squeezes or pushes on something
Geoscientist: A scientist who studies Earth and rocks
Children’s questions in this episode
Submit questions for upcoming episodes here.
What are rocks made of?
What are minerals?
What is the rock cycle?
How do rocks melt underground?
What is magma? What is lava?
How do volcanoes create rocks?
What is a sedimentary rock?
Why do sedimentary rocks feel grainy?
What is a metamorphic rock?
How do heat and pressure change rocks?
Can rocks evaporate?
What does a geoscientist do?
After listening: conversation starters
What is your favorite rock you’ve ever seen?
Where have you seen rocks around your home or neighborhood?
If you had a pet rock, what would you name it?
About the expert
Dr. Lina Pérez-Angel is a geoscientist at Brown University who studies rocks, Earth processes, and climate history. She also helps make science fun and accessible through science communication with GeoLChat.
Why STEM Podcasts for Kids?
Research shows that podcasts like Orbit: Science for kids on the move! help kids build early STEM identity while sparking curiosity and imagination about the world around them. By hearing real experts and big questions, children begin to see themselves as scientists.
They also offer engaging, screen-free entertainment—perfect for car rides and on-the-go learning—while growing science vocabulary, strengthening critical thinking, and introducing kids to real-world STEM careers in a fun, accessible way.