Science Riddles for Kids (Fun and Educational!)

I go around the sun but I'm not a planet. I light up the night but I'm not a star. What am I?

I'm full of hot gas, shine bright in the sky, and can burn you if you get too close. What am I?

I can be a solid, a liquid, or a gas, but I'm always H2O. What am I?

What never moves but can make things move around it?

I'm the force that stops you from sliding on ice. What am I?

I'm the smallest unit of matter, and everything is made of me. What am I?

I flash in the sky and follow with a boom. What am I?

I can be measured with a thermometer, but I'm not a number. What am I?

I orbit the Earth, help with weather and GPS, and float in space. What am I?

I help plants make food from sunlight. What process am I?

I am the red planet explored by rovers from Earth. What am I?

I am the ringed planet visible through a telescope. What am I?

I am the gas humans breathe in that plants release. What am I?

I am the gas plants breathe in that humans release. What am I?

I appear after the rain in seven colors. What am I?

I'm gray and heavy and bring rain from the sky. What am I?

I erupt with lava and ash. What am I?

I'm an ancient imprint of a shell or bone, buried in rock for millions of years. What am I?

I attract iron, and my needle points north. What am I?

I am the simple machine that is a ramp or slide. What am I?

I change food into energy in your body. What process am I?

I'm made of bones and help you stand tall. What am I?

I pump blood through your body with a lub-dub. What am I?

We're a pair in your chest that fill and empty with every breath. What are we?

I am the green pigment in leaves that captures sunlight. What am I?

I munch leaves, wrap myself in a chrysalis, and come out with wings. What am I?

I'm a tube with lenses that makes tiny things look huge. What am I?

I'm a glass cup with a spout for holding liquids in the lab. What am I?

We shield your eyes before experiments. What are we?

I am the planet we live on, third from the sun. What am I?