Its the perfect time for at-home science experiments.

Cut a length of string, get it wet, and squeeze out excess water.

How it Works:Cohesionlike molecules sticking together throughintermolecular attractionand forming a bond.

The Soda-Fueled Skateboard

Yep, this is the old Mentos-and-Coke trick, but with a fun upgrade.

Tape the bottle to the skateboard, then remove the bottle cap.

How It Works:Thecarbon dioxide in the Coke causes a physical reactionwhen you bring Mentos into the picture.

This creates a ton of bubbles, which are all rushing to escape without much room to do it.

As those gas bubbles rush to escape the small hole, the pressure pushes the skateboard forward.

Color Changing Flowers

This experiment takes some time, but its quick and easy to set up.

Bonus: you get a bouquet of colorful flowers when youre done.

Let them sit overnight, and you should start seeing them change color.

How It Works:Capillary action.

This happens because ofintermolecular forcesbetween the liquid and the surface.

In really basic terms, the liquid sticks to the surface of the space.

Capillary action ishow water moves within a plant.

Coloring the water lets you see this process in action.

They can create their own magnet with a few things you probably have lying around the house.

The more wire you wrap around the nail, the stronger the field will be.

you might disconnect it and still use it as a magnet for a short time.

In other words, they can be turned on and off via the electricity source.

When a wire has an electric current running through it, it creates a magnetic field.

Make Instant Ice

This one is really simple but also pretty impressive.

And, really, all you need is a bottle of water.

Chill it, and watch all the fun things it can do.

It should have a small amount or layer of ice floating around in it.

From here, you could hit the bottle on a table and watch the whole thing turn to ice.

You could also pour it onto a tray of ice and watch the water immediately crystallize into ice towers.

And even better, they get to see science in action.