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2nd Grade Physical Science Learning Resources

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Second Grade

Physical Science

How to Make a Lemon Battery

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Rainbow in a Jar

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

Firework Science

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

Separate Salt and Pepper With Static Electricity

What's the quickest way to separate salt and pepper? Let static electricity do the work! Your child will be fascinated by this simple experiment.

States of Matter in a Baggie

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

Hero's Engine: Example of Newton's Third Law

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Air Pressure Science Experiment: Balloon and a Jar

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

Magnet Experiment: Are Two Magnets Twice as Strong as One?

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Craft Fizzing Bath Soaps

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

Superhero Lightning Bolt

Help your kid feel like a superhero with this safe and fun science experiment that creates an electrical charge that's like a mini lightning bolt!

Bottle Race Car

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

Density Experiment

This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

Learn About Force: Friction

In this worksheet, kids learn about friction by answering questions about the amount of friction in different situations.

Build a Balloon-Powered Car

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

Car Friction: The Science of Going Fast

Start your toy engines -- this is going to be a fast and friction-filled race!

Rock Candy Science

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

The project investigates how water and movement affects erosion.

Eureka! Volume and the Displacement of Water

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Do Some Liquids Expand More than Others When Frozen?

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

Magnetic Field Strength vs. Distance

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

Which Cup Best Prevents Ice from Melting?

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

How to Make A Thermometer

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Is it Possible to Blow a Square Bubble?

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

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