How to make the perfect lava lamp? We experimented with a few different ways and will show you what we found out. What you need water oil (we used baby oil and vegetable oil) food coloring Alka-seltzer effervescent antacid tablets tall glass or bottle Steps Fill the glass with 1 to 2 inches of water. Add…
8th Grade Science Projects
Build A Paddle Boat | STEM For Kids (Video)
Water science experiment is always a hit for kids. Building a paddle boat is so easy and so much fun. Just use things you probably already have around the house. Let’s get started. You have just built a paddle boat! In a real paddle boat, the spinning drum of paddle boards acts as oars, pushing against…
How Fish Dive And Rise | Cartesian Diver Experiment (Video)
Do you know how fish dive or rise in water? Here is a simple Cartesian Diver experiment to show you how. Why This classic experiment is called Cartesian Diver, named after French scientist, mathematician and philosopher scientist, René Descartes. It demonstrates the principles of buoyancy and density and explains how fish dive or rise in water. Buoyancy: the force of buoyancy on…
Do Grapes Sink Or Float? | Salt Water Density Experiment
Do grapes sink or float? In the picture above, you can see that grapes can both sink and float. Why is that? What determines if an object sink or float in water? Try this experiment to learn about water density. What you need some grapes 2 clear glasses tap water salt stirrer Steps Fill the two glasses…
Magical Rising Water (Video)
We normally don’t play with fire (for obvious reasons) But here is a magical experiment I didn’t expect to be so easy and so much fun to do. At the same time, the results are so hard to understand, with, sadly, much misleading information on the internet. As always, adult supervision is required (THERE IS FIRE INVOLVED). Why…
Floating Rice – Simple Friction Experiment
Friction Experiment We can pick up rice grains using a pair of chopsticks. But can you pick up a bottle of thousands of rice grains using only one chopstick? Why When you first fill the bottle with rice, there is a little bit of space, i.e. an air pocket, in between each grain and its neighbors. As…
Build Marble Roller Coaster | STEM
If you (or your parents) have a roll of unused baby edge guard lying around, this is the perfect STEM activity for you. Have you ever wondered why the string of roller coaster cars is pulled up to the crest of the tallest point on the roller coaster before rolling downhill to the loop? Have you ever wondered why…
What Makes Ice Melt Faster? Salt Melts Ice Experiment
Here is a quick and easy ice fishing experiment. It is so cool (pun intended) that you will want to do it again and again (I did!) In this experiment, you will use only a thread and salt to lift a sticky ice cube. It is just like fishing in a pond, but in this…