Easy Science Projects – Guest Author

Easy science projects with elementary kids aren’t always done for the science fair. Sometimes, you’re just looking for something for fun. Here is a guest writer to share some easy science project ideas that you probably can’t take to the fair, but that are a whole lot of fun!

If you do need an easy science project for school, check out 24 Hour Science Projects.

Most parents and especially homeschoolers are always on the lookout for easy science fair projects to do with the kids. Here is one of our very easy science fair projects to do with the kids. In this project you are going to look at how ships float.

Simple boats such as rafts float because they are made of material that is lighter than the water. Usually materials such as light wood or reeds that are less dense than water are used.

Heave boats works differently as they float because of the upthrust of the water that occurs because of them pushing on the water. The upthrust is their pushing force. By putting something on the water and letting it go, you will see that it is pushing the liquid out of the way. The further it goes the more water it pushes up. Now, when this upthrust becomes the same as the objects weight, the object will float. This is the principle uses for boats.

Now, here is a very simple experiment to test upthrust:

What you will need for your project:

2 polystyrene blocks, one double the size of the other
A tank or a bowl of water
A wooden block
A Marble

Method for this easy science fair project to do with the kids:

Place the two polystyrene blocks in the water
Notice that they float because they are made of very light material
So, for them to float only a small amount of upthrust is needed
Now you can try and push them under the water
You should be able to feel the upthrust pushing back
Place the wooden block in and you will notice that it floats deeper in the water because it is heavier or denser than the polystyrene blocks
Now drop the marble in, you will notice that it sinks immediately as the upthrust is not enough to keep it floating

When doing a project such as this, remember to make notes of all your steps and to take photos for your display. It is also important to make use of the proper scientific method to ensure you do a good project.

In this project, what would you say is your hypothesis?
Which part of this experiment is your control?
How would you describe your method?

These are some of the things you will have to know in order to do a winning science fair project. Even easy science fair projects to do with the kids, needs to adhere to this as they have to learn from the very beginning to do it correct.

The next easy science fair project to do with the kids..

Making use of the upthrust with a hollow hull

What you need for this experiment:

A pair of scissors
Kitchen foil about 20cm X 15cm
Kitchen paper towels
The same tank of water

How to do this easy science fair project:

First of all place the flat piece of kitchen foil in the tank
Give it a slight push and notice that it sinks with the slightest push because it does not replace a lot of water, so the upthrust in minimal
Remove the foil from the water and carefully dry it with the kitchen paper without tearing it
Now you have to carefully, without tearing the foil, model it into a simple boat shape with your fingers
Place your boat in the water
What happens?
Why does it happen?
Now start filling your boat with marbles, as your cargo
What happens now?
Why does it happen?
How many marbles can you place in your boat before it sinks?
Why does it eventually sink?

In answering these questions, think of the experiment above. Now you have demonstrated how a boat works. Even though it is made of metal, it is filled with a lot of air and this creates enough upthrust to make it float. If the boat is overloaded though, it will eventually sink.

These is only two very simple examples of Easy Science Fair Projects To Do with kids, working with boats.

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About sciencemom

My name is Kayla Fay, and my husband and I have four sons. We’ve turned in over 25 science projects. We remember the disappointment of having an experiment fail. We know how frustrating it is to search for a good project at the last minute. The five 24 Hour Science Projects have experiments our sons have completed successfully. The project guides will help you have the same success with your science experiment!