Science Fair Projects for 6th Grade

These science fair projects for 6th grade allow kids ages 11-12 to explore science concepts from polarity and density to electricity and circuits.

1. Skittles Science Fair Project

Looking for a fun Skittles science fair project? Try this experiment with your 6th grader – sometimes playing with food is inevitable, but with sweet science, comes knowledge!

The colorful rainbow effect comes as the candy coating dissolves and spreads outward. The candy coating is made up almost entirely of sugar, with a little bit of food coloring. When the sugar dissolves in the water, that adds more stuff to the water around the candy. In other words, you’ve made the water around the candy heavier and more dense. Density is a measure of how tightly packed a material is. The sugar water around the candy has more stuff packed into the same space, so it’s more dense than fresh water. The denser sugar water sinks to the bottom of the dish and flows outward, while the lighter fresh water and food coloring stays on top of the dish.

2. Lava Lamp Science Project

Make your own colorful, bubbling lava lamp with this fun science experiment about density and polarity!

Try making a glow-in-the dark lava lamp by using quinine water (and no food coloring) instead of tap water. Place your lava lamp under a blacklight to light it up!

3. Pop-Top Rockets

These mini rockets are so easy to make and so fun to set off, you’ll want to launch them again and again.

To see what’s going on here, try dropping a fizzy tablet into clear glass of water and watch what happens. You’ll see the tablet immediately create lots of tiny bubbles that rise up to the surface of the water. Those bubbles are carbon dioxide gas, created by a chemical reaction between two ingredients in the tablets. When that reaction takes place inside your pop-top rocket, the carbon dioxide gas has nowhere to go. More and more builds up inside your rocket until… pop! Eventually the pressure from the gas becomes too great and the pop-top seal lets go, sending your rocket shooting up into the air.

4. Graphite Circuit

Learn about the conductive properties of graphite and draw your own design to see it light up! This is a super quick and easy science experiment that is entertaining for both kids and adults alike.

Graphite is an electrical conductor, perfect for learning about circuits  and electricity! Because graphite is low in conductivity, the success of a circuit will depend on the length, thickness, and amount of graphite on the paper. For example, the longer the graphite path is, the dimmer your light will be.

5. Balloon Hovercraft

You don’t need high-tech gadgets to make your own hovercraft! This balloon-powered toy is easy to make with household materials and is a ton of fun to send zooming around!

This activity is a great way for kids to experiment with friction. As long as the balloon is still filled with air, you can easily push the hovercraft across a smooth tabletop. But as soon as the air runs out, it quickly comes to a stop. The cushion of air reduces the friction between the CD and the tabletop, allowing your hovercraft to fly, just like the puck on an air hockey table.

For more amazing science fair projects, be sure to check out:

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