15 Fun Physics for Kids Experiments to Try in Your Kitchen

Table of Contents

1. Introduction
2. The Core Concepts: What Is Physics for Kids?
3. Understanding Motion and Force
4. Exploring the Power of Gravity and Friction
5. The Science of Density and Buoyancy
6. Air Pressure and Atmospheric Science
7. Light, Optics, and the Solar System
8. Sound and Vibrations
9. Simple Machines in the Kitchen
10. How to Structure a Physics Lesson at Home
11. Physics in Art and Nature
12. Physics for Different Age Groups
13. Why Hands-On Physics Matters
14. Conclusion
15. FAQ

Introduction

It usually starts with a simple "why." Why does the cake rise in the oven? Why does the spoon look like it broke when you put it in a glass of water? Why did the orange float when it had its peel on, but sink once it was peeled? These questions are the gateway to physics, the branch of science that explores how the universe behaves. For many parents and educators, the idea of teaching physics feels daunting, perhaps bringing back memories of complex equations and dry textbooks.

At I’m the Chef Too!, we believe that the best laboratory in the world is actually your kitchen. Physics is not just about chalkboard formulas; it is about the way things move, the way energy transforms, and the way matter interacts. By bringing these concepts into a hands-on environment, we turn abstract ideas into tangible experiences that children can see, touch, and—sometimes—even taste.

This guide explores a variety of physics for kids experiments designed for the home or classroom. If you want a new adventure every month, you can join The Chef's Club for hands-on learning that blends cooking and STEM. We will cover the laws of motion, the behavior of light and sound, the power of air pressure, and the mysteries of density. Whether you are a parent looking for a weekend activity or an educator seeking a curriculum-aligned project, these activities make complex science feel like a joyful adventure.

Quick Answer: Physics for kids is best taught through hands-on experiments using everyday items like balloons, coins, water, and kitchen ingredients. These activities demonstrate core concepts like Newton’s Laws, density, and energy transfer in a way that is visual, interactive, and memorable.

The Core Concepts: What Is Physics for Kids?

Physics is the study of matter, energy, and the interaction between them. For a child, this means understanding the "rules" of the world. It is the science that explains why a ball comes back down when thrown, why it is harder to push a heavy box than a light one, and how light allows us to see colors.

When we introduce physics to children, we focus on five main pillars:

1. Motion and Force: How things move and what makes them stop.
2. Energy: How things get the power to move or change.
3. Matter: The "stuff" everything is made of and how it changes states.
4. Waves: How sound and light travel through the world.
5. Electricity and Magnetism: The invisible forces that power our modern lives.

For more ideas that turn science into hands-on discovery, explore our STEM for Kids articles. By framing physics as a series of experiments, we shift the focus from memorization to discovery. We are not just telling them about gravity; we are letting them feel it. We are not just defining friction; we are letting them observe it on different surfaces. This approach builds a foundation of scientific literacy that lasts a lifetime.

Understanding Motion and Force

Motion is simply the act of changing position. Force is the push or pull that causes that change. To help children understand this, we look to Sir Isaac Newton, who developed three laws that describe how everything in our world moves.

Newton’s First Law: The Law of Inertia

Inertia means that an object wants to keep doing what it is already doing. If it is sitting still, it wants to stay still. If it is moving, it wants to keep moving in a straight line.

The Coin Tower Experiment Step 1: Stack the coins. / Create a tall, straight stack of nickels or quarters on a flat table. Step 2: Use a "striker." / Take another coin and flick it quickly toward the bottom of the stack. Step 3: Observe the result. / If done correctly, the bottom coin will fly out, but the rest of the stack will drop straight down.

The stack "wants" to stay still because of inertia. The force only acted on the bottom coin, leaving the others to stay in their place until gravity pulled them down.

Newton’s Second Law: Force and Acceleration

This law explains that the more mass an object has, the more force you need to move it. It also shows that the harder you push something, the faster it goes.

The Rolling Fruit Race Find a heavy orange and a light grape. Ask your child to push both with the same amount of "flick" from their finger. The grape will zoom away, while the orange might barely move. This is a clear visual of how mass affects motion. We use similar principles of force and mass in our kitchen adventures to show how different ingredients behave under pressure.

Newton’s Third Law: Action and Reaction

For every action, there is an equal and opposite reaction. This is the foundation of rocket science.

Balloon Rocket Experiment Step 1: String the line. / Thread a long piece of string through a drinking straw and tie the ends to two chairs. Step 2: Prepare the balloon. / Blow up a balloon but do not tie it. Hold the end shut. Step 3: Attach and release. / Tape the balloon to the straw and let go.

The air rushing out of the back (the action) pushes the balloon forward (the reaction). This simple physics for kids experiment is a favorite because it is fast, loud, and exciting.

Key Takeaway: Newton’s Laws are the "rules of the road" for everything in the universe, and you can demonstrate all three using just coins, fruit, and balloons.

Exploring the Power of Gravity and Friction

Gravity is the invisible force that pulls everything toward the center of the Earth. Friction is the force that resists motion when two surfaces touch. Both are essential concepts for young physicists to grasp.

Gravity and Balance

Every object has a "center of gravity." This is the point where its mass is perfectly balanced.

The Balancing Apple Can you make an apple balance on the tip of your finger? Usually, it falls. But if you stick two forks into the sides of the apple, pointing downward, you lower the center of gravity. Suddenly, the apple can balance on a single point, like a toothpick or your fingertip. This experiment teaches children about stability and how the distribution of weight affects an object’s ability to stay upright.

Friction: The Great Slower-Downer

Friction is what allows our shoes to grip the floor, but it is also what makes it hard to slide a heavy box across a rug.

The Toy Car Surface Test Step 1: Build a ramp. / Propped up a piece of cardboard against a stack of books. Step 2: Test smooth surfaces. / Let a toy car roll down the ramp onto a smooth tile or wood floor. Measure how far it goes. Step 3: Test rough surfaces. / Place a towel or a piece of sandpaper at the bottom of the ramp. Roll the car again.

The car stops much sooner on the towel because the "bumps" in the fabric create more friction against the wheels. In the kitchen, we see friction at work when we grease a cake pan. The oil reduces friction, allowing the cake to slide out easily after baking.

If you are looking for more screen-free ideas, our science crafts for kids article connects these kinds of experiments to playful learning. > Bottom line: Gravity keeps us grounded, while friction controls how we move; understanding these forces helps children predict how objects will behave in different environments.

The Science of Density and Buoyancy

Why does a massive ship float, but a tiny pebble sinks? This is the central question of fluid mechanics. It comes down to two concepts: density (how tightly packed the "stuff" inside an object is) and buoyancy (the upward force of a liquid).

The Floating Egg Experiment

This is one of the most classic physics for kids experiments because it feels like magic but is actually pure science.

Step 1: Prepare two glasses. / Fill both glasses with plain tap water. Step 2: Test the egg. / Drop a fresh egg into the first glass. It will sink to the bottom. Step 3: Change the density. / Add about 4 tablespoons of salt to the second glass and stir until dissolved. Step 4: Observe the difference. / Place the egg in the saltwater. It will float!

The Explanation: Saltwater is denser than plain water. By adding salt, you made the water "heavier" for its size. Eventually, the water becomes denser than the egg, pushing the egg upward.

Layered Liquid Towers

You can take this further by creating a density tower. Use honey, dish soap, water, and vegetable oil. Because these liquids have different densities, they will sit on top of each other in distinct layers rather than mixing.

When we engage in kitchen science, we often see these principles during baking. For example, in our Erupting Volcano Cakes Kit, we look at how gas bubbles (which are very low density) rise through a thicker batter or liquid to create an "eruption." This blend of chemistry and physics is what makes edutainment so effective for learning.

Key Takeaway: An object’s ability to float depends on its density relative to the liquid around it. You can change a liquid's density simply by adding things like salt or sugar.

Air Pressure and Atmospheric Science

We live at the bottom of an "ocean" of air. Even though we cannot see it, air has weight and takes up space. This weight is called air pressure.

The Upside-Down Water Glass

This experiment usually results in a few gasps of surprise.

1. Fill a glass completely to the brim with water.
2. Place a piece of stiff cardstock over the top.
3. Keeping your hand on the card, quickly flip the glass upside down over a sink.
4. Remove your hand from the card.

The card stays in place, and the water does not fall out! Why? Because the air pressure pushing up from outside the glass is stronger than the weight of the water pushing down inside the glass.

Air Expansion and Contraction

Air also changes based on temperature. When air gets hot, the molecules move faster and spread out (expansion). When it gets cold, they slow down and move closer together (contraction).

The Balloon in a Bottle Step 1: Attach the balloon. / Stretch the opening of a balloon over the top of an empty glass bottle. Step 2: Heat it up. / Place the bottle in a bowl of hot water. Watch as the balloon begins to inflate on its own. Step 3: Cool it down. / Move the bottle to a bowl of ice water. The balloon will deflate and may even be sucked inside the bottle.

This experiment perfectly demonstrates how energy (heat) affects matter (air). Understanding how pressure works is a key part of many of our adventures, including our hands-on STEM kits, where kids explore big scientific ideas through edible learning.

Myth: Air is "empty" space and has no weight.
Fact: Air is made of molecules that have mass. The air in an average room actually weighs about as much as a large adult!

Light, Optics, and the Solar System

Physics also covers the behavior of light. Light travels in straight lines until it hits something. When it hits an object, it can reflect (bounce off), refract (bend), or be absorbed.

The Magic Bending Pencil

Fill a clear glass halfway with water. Place a pencil in the glass and look at it from the side. The pencil will appear "broken" or shifted at the water line. This happens because light travels slower through water than it does through air. As the light slows down, it bends, which changes how our eyes perceive the pencil’s position. This is called refraction.

Creating Rainbows at Home

You can demonstrate light refraction and the spectrum of colors using a simple bowl of water and a mirror.

1. Place a small mirror inside a bowl of water at an angle.
2. Shine a flashlight onto the mirror through the water.
3. Hold a piece of white paper so the reflection from the mirror hits it.
4. You will see a rainbow on the paper.

White light is actually made of all the colors of the rainbow. The water acts like a prism, bending each color at a slightly different angle and separating them so we can see them.

This exploration of light and color is a major theme in our Galaxy Donut Kit. While children decorate their donuts to look like deep space, they are also learning about the physics of light in the universe and how astronomers use that light to study distant stars.

Sound and Vibrations

Sound is a type of energy made by vibrations. When something vibrates, it sends waves of energy through the air and into our ears.

The Dancing Sprinkles Experiment

How do you "see" sound?

1. Stretch a piece of plastic wrap tightly over a large bowl.
2. Place a few colorful sprinkles on top of the plastic wrap.
3. Hold a metal baking pan near the bowl and hit it hard with a spoon.

The sprinkles will jump and dance! The sound waves from the pan traveled through the air and hit the plastic wrap, causing it to vibrate. These vibrations moved the sprinkles.

DIY Phone Speaker

You can also explore how sound waves travel and can be amplified. Take a cardboard toilet paper roll and cut a slit in the middle for a smartphone. Poke two plastic cups onto the ends of the roll. When music plays, the sound waves are directed through the tube and amplified by the shape of the cups. This teaches children about acoustics—the physics of sound.

If you want more ideas that connect curiosity with edible creativity, the latest science experiments kits for kids show how science can become a hands-on adventure. > Bottom line: Sound is not just something we hear; it is a physical vibration that can move objects and travel through different materials.

Simple Machines in the Kitchen

Physics is often about making work easier. Simple machines are tools that allow us to use less force to move an object over a distance. There are six classic simple machines: the lever, the pulley, the wheel and axle, the inclined plane, the wedge, and the screw.

The kitchen is full of these!

• The Lever: A pair of tongs or a nutcracker.
• The Wedge: A knife or a vegetable peeler.
• The Screw: A jar lid or a wine opener.
• The Inclined Plane: A knife sharpener or even the slope of a funnel.

The Broom Pulley Experiment

You can show your child how a pulley works using two brooms and a long piece of rope.

1. Have two people hold the broom handles horizontally, about two feet apart.
2. Tie one end of the rope to one broom.
3. Wrap the rope around the other broom and back to the first one several times.
4. Have a child pull the free end of the rope.

Even though the two people are trying to pull the brooms apart, the child will be able to pull them together with ease. The "pulley" system multiplies the child’s strength. This is a fantastic way to show that physics is a tool that gives us "superpowers" to move heavy things.

How to Structure a Physics Lesson at Home

If you are a homeschooler or an educator, you want to move beyond just the "cool factor" and ensure real learning is happening. Following the scientific method is the best way to do this.

1. Ask a Question: "What happens if we add more salt to the water?"
2. Form a Hypothesis: "I think the egg will float even higher."
3. Perform the Experiment: Do the activity together.
4. Observe and Record: Write down or draw what happened.
5. Draw a Conclusion: "My hypothesis was right! Salt makes water denser."

By using this structure, you are teaching children how to think like scientists. You are showing them that it is okay to be wrong and that every experiment provides new information.

Tips for Success

• Embrace the mess: Physics often involves water, flour, or bouncing balls. Setting up in the kitchen makes cleanup easier.
• Ask open-ended questions: Instead of explaining the result immediately, ask, "What do you see happening?" or "Why do you think it did that?"
• Connect to real life: When you see a crane at a construction site, talk about pulleys. When you see a rainbow after a storm, talk about refraction.
• Use edutainment: Kits like those from I’m the Chef Too! provide all the materials and the "why" behind the science, making it easy for busy parents to provide high-quality STEM experiences.

For families and teachers looking for structured support, our school and group programmes make it easier to bring hands-on STEM into classrooms and group settings. > Key Takeaway: The goal of physics for kids experiments is not just to get the "right" answer, but to foster curiosity and a systematic way of looking at the world.

Physics in Art and Nature

Physics isn't just about machines and laboratory equipment; it is deeply embedded in the natural world and the arts. Understanding the physics of balance and symmetry can help a child become a better artist or a more observant nature lover.

Centripetal Force and Art

Centripetal force is the "center-seeking" force that keeps an object moving in a circle. You can see this in action with "spin art." By placing a piece of paper on a spinning platform (like a salad spinner) and dropping paint onto it, the paint flies outward in beautiful patterns. This is physics creating art!

Nature’s Physicists

Animals use physics every day to survive.

• Sharks: Use buoyancy and oil-filled livers to stay at the right depth in the ocean.
• Turtles: Their shells are incredible examples of structural engineering, designed to distribute force and protect the animal.

In our Wild Turtle Whoopie Pies kit, we explore the world of these amazing creatures. While children are busy baking and decorating, they are also learning about the biology and physics that allow turtles to thrive in their environments. This holistic approach—blending art, nature, and STEM—is at the heart of everything we do.

Physics for Different Age Groups

Not every physics concept is right for every age. Here is a quick guide on how to tailor your experiments.

For the youngest learners, focus on the "wow" factor. For older children, introduce measurement. Have them use a stopwatch to see how fast the balloon rocket travels or a ruler to measure how far the toy car rolled.

Why Hands-On Physics Matters

In a world filled with screens, hands-on physics for kids experiments offer a vital alternative. When a child builds a ramp or mixes a density tower, they are using their fine motor skills, their spatial reasoning, and their problem-solving abilities.

Physics also builds confidence. Many children (and adults!) decide early on that they are "not good at science." By making physics fun and accessible in the kitchen, we break down those barriers. We show them that science is not a scary subject—it is a way of interacting with the world that they are already doing every day.

We see this confidence grow every month through The Chef's Club. Our subscribers receive a new adventure that blends cooking, STEM, and the arts. Whether they are exploring the stars or the deep sea, they are learning that they have the tools to understand complex subjects. They aren't just reading about physics; they are living it.

Conclusion

Physics for kids experiments don't require expensive equipment or a PhD. With a few balloons, some kitchen staples, and a healthy dose of curiosity, you can turn your home into a vibrant center of discovery. From the way a ball bounces to the way a rainbow forms in a glass of water, physics is the key to understanding the "why" behind the world's most fascinating moments.

At I'm the Chef Too!, we are dedicated to making those moments of discovery happen more often. Our mission is to blend food, STEM, and the arts into "edutainment" experiences that the whole family can enjoy together, away from screens. If you want to keep the learning going, subscribe to our Chef's Club or browse our full kit collection to find your next kitchen adventure. By making learning delicious and hands-on, we help children build the skills and confidence they need for the future.

"The important thing is not to stop questioning. Curiosity has its own reason for existence." — Albert Einstein

Next Step: Choose one experiment from this list—perhaps the Floating Egg or the Balloon Rocket—and try it tonight. Don't worry about getting it perfect. Focus on the questions, the laughter, and the shared "aha" moment.

FAQ

What is the easiest physics experiment for a 5-year-old?

The "Sink or Float" experiment is perfect for preschoolers because it is highly visual and interactive. Simply fill a large bowl with water and gather various household objects like a spoon, a cork, a toy car, and an orange. Have the child predict what will happen before dropping each item in to see the result.

How does cooking actually teach physics to children?

Cooking is essentially practical physics and chemistry. When you heat an oven, you are teaching thermodynamics; when you use a whisk, you are using a simple machine to create force; and when you bake a cake, you are watching matter change states from liquid to solid through energy transfer.

Do I need special supplies for physics for kids experiments?

Most physics experiments for children use common household items like string, balloons, empty bottles, salt, and water. You don't need a lab kit to teach the fundamentals of motion, gravity, or density, though specialized kits can help by providing pre-measured ingredients and structured learning guides.

Why is it called "physics" and not just "science"?

Science is a broad term that covers everything from plants (biology) to rocks (geology). Physics is a specific branch of science that focuses on the "non-living" world and the rules that govern matter and energy, such as how things move, how light works, and how electricity flows.