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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.

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.

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.

Firework Science

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

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.

Density Experiment

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

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.

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.

Car Friction: The Science of Going Fast

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

Defying Gravity

This science fair project idea investigates how magnetism can defy the force of gravity.

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.

Learn About Force: Friction

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

The project investigates how water and movement affects erosion.

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.

Latent Fingerprints

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

Which Cup Best Prevents Ice from Melting?

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

Sinking Objects

This science fair project idea investigates which objects float and sink in honey, water, and oil.

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.

The Ghost in the Tube

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

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!

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

In this experiment you will replicate the mummification process by making a hot dog mummy.

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?

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