November 9th, 2007
Eggs and kids, what could be messier? I guess when you are going down that road of science with kids it is sometimes necessary to get dirty.
I found this one on a web site called familieswithpurpose.com.
So here we go! You will need a hard boiled egg without its shell, a glass bottle with its mouth a little smaller then the egg, matches, and a small piece of paper.
First, drop the paper into the bottle, followed by the lit match. Then place the egg on top of the bottle. The egg should drop inside. To get the egg out turn the bottle over so that the egg covers the opening, then blow into the bottle. The egg should fall out.
Why does the egg fall into the bottle? The web site explains it this way “The egg prevents outside air (high pressure) from getting into the bottle while the flame causes the air inside the bottle (low pressure) to contract causing a small vacuum.
As the outer air pushes its way into the bottle and the vacuum is created in the bottle, the egg falls in.”
Why does the egg fall out? They state that “The air pressure in the bottle forces the egg out and into your hand.”
The egg might even still be edible after the experiment.
Click here to find more science experiments for kids.
Would you try this one?
November 6th, 2007
Did you know that you can use a coat hanger and string to make a science experiment for kids?
I found this one at tryscience.org called “Musical Coat Hangers”.
To try it you will need an old fashioned wire coat hanger and some string.
To start this experiment tie 20 inches of cotton thread on each end of the hanger, then wrap the other ends around your finger. Bend the hanger in half so it can swing. Then bump it into things around your house. Try it again with your fingers in your ears.
What is happening is described as “When you bump the coat hanger, it shakes or vibrates, making a noise. The noise is louder when your fingers are in your ears because the vibrations travel better through the tight cotton threads than through the air”
This experiment should be fun for the younger kids.
To see more science experiments for kids.
Will this be a fun one?
October 25th, 2007
I found a fun experiment at spartechsoftware.com that involves the kitchen sink. The web site asks this question “How does a boat or ship carrying hundreds of pounds worth of stuff float while that same stuff would sink to the bottom of the ocean if dumped overboard? How come when you’re in a pool and you stretch your body out flat you float. But, if you wrap your arms around your legs and curl up into a ball you sink? Well, it all has to do with how much water is pushing against you and a little scientific principle called buoyancy or flotation.”
To test this, fill your sink with water. Then get some clay. Split the clay in two different pieces. Make one piece into a ball, then make the other into a boat shape. Place these into the water to see what happens.
What has happened is explained as “if the total area of the object that makes contact with the water is large enough, the object floats. The object must make room for its own volume by pushing aside, or displacing, an equivalent (or equal) volume of liquid. The object is exerting a downward force on the water and the water is therefore exerting an upward force on the object. Of course the floating object’s weight comes into play also. The solid body floats when it has displaced just enough water to equal its own original weight.”
I will definitely try this one with my kids, it doesn’t sound like it would make too big of a mess.
Would you try this one?
Here is a great place to find more science experiments for kids.
October 25th, 2007
There is nothing more fun than seeing the delight in children’s eyes as they learn something new. As I am on the road to find out how best to home school my child I have found that a lot can be learned from science experiments. Science is fun for parents as well as for kids. Whether you are looking for science fair projects, home school activities, or the fine educational family time you can follow along as I explore the wide world of science experiments for kids.